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Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Jun. 30, 2018	Jul. 31, 2018
Document And Entity Information
Entity Registrant Name	GSI TECHNOLOGY INC
Entity Central Index Key	0001126741
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Amendment Flag	false
Current Fiscal Year End Date	--03-31
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		21,769,194
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2019

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
ASSETS
Cash and cash equivalents	$ 36,426	$ 40,241
Short-term investments	16,166	18,124
Accounts receivable, net	6,847	5,279
Inventories	5,141	5,547
Prepaid expenses and other current assets	2,114	2,080
Total current assets	66,694	71,271
Property and equipment, net	9,332	8,172
Long-term investments	11,921	7,923
Goodwill	7,978	7,978
Intangible assets, net	2,911	2,989
Other assets	1,201	1,207
Total assets	100,037	99,540
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	2,267	1,841
Accrued expenses and other liabilities	5,187	5,563
Total current liabilities	7,454	7,404
Income taxes payable	619	619
Other accrued expenses	4,760	4,702
Total liabilities	12,833	12,725
Commitments and contingencies (Note 7)
Stockholders' equity:
Preferred stock: $0.001 par value authorized: 5,000,000 shares; issued and outstanding: none
Common Stock: $0.001 par value authorized: 150,000,000 shares; issued and outstanding: 21,760,094 and 21,407,247 shares, respectively	22	21
Additional paid-in capital	29,435	27,391
Accumulated other comprehensive loss	(152)	(142)
Retained earnings	57,899	59,545
Total stockholders' equity	87,204	86,815
Total liabilities and stockholders' equity	$ 100,037	$ 99,540

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2018	Mar. 31, 2018
Stockholders' Equity
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	21,760,094	21,407,247
Common stock, shares outstanding	21,760,094	21,407,247

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Income Statement
Net revenues	$ 11,266	$ 10,687
Cost of revenues	5,478	5,083
Gross profit	5,788	5,604
Operating expenses:
Research and development	4,850	4,335
Selling, general and administrative	2,597	2,798
Total operating expenses	7,447	7,133
Loss from operations	(1,659)	(1,529)
Interest income, net	138	97
Other income (expense), net	(115)	1
Loss before income taxes	(1,636)	(1,431)
Provision for income taxes	10	81
Net loss	$ (1,646)	$ (1,512)
Net loss per share:
Basic	$ (0.08)	$ (0.07)
Diluted	$ (0.08)	$ (0.07)
Weighted average shares used in per share calculations:
Basic	21,567	20,805
Diluted	21,567	20,805

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Consolidated Statements Of Comprehensive Loss
Net loss	$ (1,646)	$ (1,512)
Net unrealized loss on available-for-sale investments	(10)	(6)
Total comprehensive loss	$ (1,656)	$ (1,518)

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net loss	$ (1,646)	$ (1,512)
Adjustments to reconcile net loss to net cash used in operating activities:
Allowance for sales returns, doubtful accounts and other	28	(1)
Provision for excess and obsolete inventories	678	448
Depreciation and amortization	329	306
Stock-based compensation	542	478
Amortization of premium on investments	(2)	23
Changes in assets and liabilities:
Accounts receivable	(1,596)	188
Inventory	(272)	12
Prepaid expenses and other assets	(28)	(394)
Accounts payable	202	350
Accrued expenses and other liabilities	(266)	(1,221)
Net cash used in operating activities	(2,031)	(1,323)
Cash flows from investing activities:
Purchase of investments	(8,848)	(3,498)
Maturities of short-term investments	6,800	1,250
Decrease in MikaMonu escrow deposit		479
Purchases of property and equipment	(1,239)	(105)
Net cash used in investing activities	(3,287)	(1,874)
Cash flows from financing activities:
Payment of MikaMonu escrow deposit		(479)
Proceeds from issuance of common stock under employee stock plans	1,503	1,811
Net cash provided by financing activities	1,503	1,332
Net decrease in cash and cash equivalents	(3,815)	(1,865)
Cash and cash equivalents at beginning of the period	40,241	33,736
Cash and cash equivalents at end of the period	36,426	31,871
Non-cash financing activities:
Purchases of property and equipment through accounts payable and accruals	277	$ 49
Supplemental cash flow information:
Net cash received from refunds of income taxes	$ 41

1. THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	3 Months Ended
	Jun. 30, 2018
The Company And Summary Of Significant Accounting Policies
NOTE 1-THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	NOTE 1—THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of presentation The accompanying unaudited condensed consolidated financial statements of GSI Technology, Inc. and its subsidiaries (“GSI” or the “Company”) have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and pursuant to the instructions to Form 10-Q and Article 10 of Regulation S-X of the Securities and Exchange Commission. Accordingly, the interim financial statements do not include all of the information and footnotes required by GAAP for annual financial statements. These interim financial statements contain all adjustments (which consist of only normal, recurring adjustments) that are, in the opinion of management, necessary to state fairly the interim financial information included therein. The Company believes that the disclosures are adequate to make the information not misleading. However, these financial statements should be read in conjunction with the audited consolidated financial statements and related notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2018. The consolidated results of operations for the three months ended June 30, 2018 are not necessarily indicative of the results to be expected for the entire fiscal year. Significant accounting policies Except for the accounting policy for revenue recognition, which was updated as a result of adopting a new accounting standard related to revenue recognition, there have been no material changes to our significant accounting policies that were disclosed in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2018. See “Recent accounting pronouncements” below for additional information on the impact of the adoption of the new accounting standard for revenue recognition on the Company’s consolidated financial statements. Recent accounting pronouncements In January 2017, the FASB issued ASU No. 2017-04, "Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment". The standard eliminates the second step in the goodwill impairment test which requires an entity to determine the implied fair value of the reporting unit’s goodwill. Instead, an entity should recognize an impairment loss if the carrying value of the net assets assigned to the reporting unit exceeds the fair value of the reporting unit, with the impairment loss not to exceed the amount of goodwill allocated to the reporting unit. The standard is effective for annual and interim goodwill impairment tests conducted in fiscal years beginning after December 15, 2019, with early adoption permitted. The Company does not anticipate the adoption of this guidance to have a material impact on its consolidated financial statements and related disclosures. In November 2016, the FASB issued ASU No. 2016-18, “Statement of Cash Flows (Topic 230): Restricted Cash”. ASU 2016-18 requires entities to include in their cash and cash-equivalent balances in the statement of cash flows those amounts that are deemed to be restricted cash and restricted cash equivalents. As a result, companies will no longer present transfers between cash and cash equivalents, and restricted cash and restricted cash equivalents in the statement of cash flows. The Company adopted ASU 2016-18 in the quarter ended June 30, 2018. Implementation of this guidance did not have a material impact on the Company’s consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” ASU 2016-13 replaces the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. For trade and other receivables, loans, and other financial instruments, the Company will be required to use a forward-looking expected loss model rather than the incurred loss model for recognizing credit losses which reflects losses that are probable. Credit losses relating to available-for-sale debt securities will also be recorded through an allowance for credit losses rather than as a reduction in the amortized cost basis of the securities. ASU 2016-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, with early adoption permitted beginning April 1, 2019. Application of the amendments is through a cumulative-effect adjustment to retained earnings as of the effective date. The Company is currently evaluating the impact of this standard on its consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842).” The core principle of Topic 842 is that a lessee should recognize the assets and liabilities that arise from leases. All leases create an asset and a liability for the lessee in accordance with FASB Concepts Statement No. 6, “Elements of Financial Statements,” and, therefore, recognition of those lease assets and lease liabilities represents a change of previous GAAP, which did not require lease assets and lease liabilities to be recognized for most leases. This ASU is effective for annual and interim periods beginning after December 15, 2018. Early adoption is permitted. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee have not significantly changed from previous GAAP. Although the Company is currently evaluating the impact the pronouncement will have on its consolidated financial statements and related disclosures, the Company expects that most of its operating lease commitments will be subject to the new standard and recognized as operating lease liabilities and right-of-use assets upon adoption. In January 2016, the FASB issued ASU 2016-01, “Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities.” ASU 2016-01 requires equity investments to be measured at fair value with changes in fair value recognized in net income and simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. The accounting standard update also updates certain presentation and disclosure requirements. The Company adopted ASU 2016-01 in the quarter ended June 30, 2018. Implementation of this guidance did not have a material impact on the Company’s consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)" and has subsequently issued several supplemental and/or clarifying ASUs (collectively, "ASC 606"). The new accounting standard outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance. The new standard requires a company to recognize revenue as control of goods or services transfers to a customer at an amount that reflects the expected consideration to be received in exchange for those goods or services. It defines a five-step approach for recognizing revenue, which may require a company to use more judgment and make more estimates than under the current standard. The Company adopted ASC 606 on April 1, 2018 using the modified retrospective transition method. The Company determines revenue recognition through the following steps: (1) identification of the contract with a customer; (2) identification of the performance obligations in the contract; (3) determination of the transaction price; (4) allocation of the transaction price to the performance obligations in the contract; and (5) recognition of revenue when, or as, we satisfy a performance obligation. The adoption of ASC 606 was applied to all contracts and did not have a significant impact on the Company’s retained earnings as the timing of Company’s revenue recognition under the new standard coincides with the way the Company previously recognized revenue. There was no impact on the opening retained earnings balance as of April 1, 2018 due to the adoption of ASC 606. The majority of the Company’s customer contracts, which may be in the form of purchase orders, contracts or purchase agreements, contain performance obligations for delivery of agreed upon products. Delivery of all performance obligations contained within a contract with a customer typically occurs at the same time (or within the same accounting period). Transfer of control typically occurs at the time of shipment or at the time the product is pulled from consignment as that is the point at which delivery has occurred, title and the risks and rewards of ownership have passed to the customer, and the Company has a right to payment. Thus, the Company will generally recognize revenue upon shipment of the product. Because all of the Company’s performance obligations relate to contracts with a duration of less than one year, the Company elected to apply the optional exemption practical expedient provided in ASC 606 and, therefore, is not required to disclose the aggregate amount of the transaction price allocated to performance obligations that are unsatisfied or partially unsatisfied at the end of the reporting period. The Company adjusts the transaction price for variable consideration. Variable consideration is not typically significant and primarily results from stock rotation rights and quick pay discounts provided to our distributors. As a practical expedient, the Company is recognizing the incremental costs of obtaining a contract, specifically commission expenses that have a period of benefit of less than twelve months, as an expense when incurred. Additionally, the Company has adopted an accounting policy to recognize shipping costs that occur after control transfers to the customer as a fulfillment activity. The Company’s contracts with customers do not typically include extended payment terms. Payment terms vary by contract type and type of customer and generally range from 30 to 60 days from shipment. Additionally, the Company has right to payment upon shipment. The Company records revenue net of sales tax, value added tax, excise tax and other taxes collected concurrent with product sales. The impact of such taxes on products sales is immaterial. The Company has also elected to recognize the cost for freight and shipping when control over the products sold passes to customers and revenue is recognized. The Company warrants its products to be free of defects generally for a period of three years. The Company estimates its warranty costs based on historical warranty claim experience and includes such costs in cost of revenues. Warranty costs and the accrued warranty liability were not material as of June 30, 2018. The majority of the Company’s revenue is derived from sales of SRAM products which represent approximately 97% of total revenues in the three months ended June 30, 2018. The majority of the Company’s revenue is derived from sales to distributors and contract manufacturers which represented approximately 54% and 44% of net revenue, respectively, for the three months ended June 30, 2018. Nokia, the Company’s largest customer, purchases products directly from the Company and through contract manufacturers and distributors. Based on information provided to the Company by its contract manufacturers and distributors, purchases by Nokia represented approximately 47% of the Company’s net revenues in the three months ended June 30, 2018. The Company historically deferred recognition of revenue on shipments to its distributors because it lacked fixed and determinable pricing for contracts in which the distributors had rights to price concessions from the Company upon shipment to the distributors’ customers. During fiscal 2018, the Company revised all of its distribution agreements to eliminate the uncertainty in pricing, allowing the Company to recognize revenue at the time of shipment to the distributors. As a result, the implementation of the guidance did not have a significant impact on the Company’s consolidated financial statements. See “Note 9 - Segment and Geographic Information” for revenue by shipment destination.

2. NET LOSS PER COMMON SHARE

3 Months Ended

Jun. 30, 2018

NET LOSS PER COMMON SHARE

NOTE 2 - NET LOSS PER COMMON SHARE

NOTE 2—NET LOSS PER COMMON SHARE

The Company uses the treasury stock method to calculate the weighted average shares used in computing diluted net loss per share. The following table sets forth the computation of basic and diluted net loss per share:


	Three Months Ended June 30,
	2018		2017
	(In thousands, except per share amounts)
Net loss	$	(1,646)	$	(1,512)

Denominators:
Weighted average shares—Basic		21,567		20,805
Dilutive effect of employee stock options		—		—
Dilutive effect of employee stock purchase plan options		—		—
Weighted average shares—Dilutive		21,567		20,805
Net loss per common share—Basic	$	(0.08)	$	(0.07)
Net loss per common share—Diluted	$	(0.08)	$	(0.07)

The following shares of common stock underlying outstanding stock options, determined on a weighted average basis, were excluded from the computation of diluted net loss per share as they had an anti-dilutive effect:


	Three Months Ended June 30,
	2018	2017
	(In thousands)
Shares underlying options and ESPP shares	3,044	2,560

3. BALANCE SHEET DETAIL

3 Months Ended

Jun. 30, 2018

BALANCE SHEET DETAIL

NOTE 3 - BALANCE SHEET DETAIL

NOTE 3—BALANCE SHEET DETAIL



	June 30, 2018		March 31, 2018
	(In thousands)
Inventories:
Work-in-progress	$	2,321	$	2,226
Finished goods		2,820		3,321
	$	5,141	$	5,547



	June 30, 2018		March 31, 2018
	(In thousands)
Accounts receivable, net:
Accounts receivable	$	6,937	$	5,342
Less: Allowances for sales returns, doubtful accounts and other		(90)		(63)
	$	6,847	$	5,279



	June 30, 2018		March 31, 2018
	(In thousands)
Prepaid expenses and other current assets:
Prepaid tooling and masks	$	271	$	163
Escrow deposit		750		750
Other receivables		514		370
Other prepaid expenses and other current assets		579		797
	$	2,114	$	2,080



	June 30, 2018		March 31, 2018
	(In thousands)
Property and equipment, net:
Computer and other equipment	$	18,926	$	17,845
Software		4,072		4,072
Land		3,900		3,900
Building and building improvements		3,306		2,310
Furniture and fixtures		102		82
Leasehold improvements		815		766
Construction in progress		230		965
		31,351		29,940
Less: Accumulated depreciation		(22,019)		(21,768)
	$	9,332	$	8,172

Depreciation expense was $251,000 and $228,000 for the three months ended June 30, 2018 and 2017, respectively. The construction in progress relates to a facility expansion at our Sunnyvale headquarters that will be placed in service in the first half of fiscal 2019.



	June 30, 2018		March 31, 2018
	(In thousands)
Other assets:
Escrow deposit	$	1,000	$	1,000
Non-current deferred income taxes		75		75
Deposits		126		132
	$	1,201	$	1,207

The escrow deposit at June 30, 2018 and March 31, 2018 includes approximately $1.0 million and $1.0 million, respectively, placed in escrow in connection with the Company’s acquisition of MikaMonu Group Ltd. (“MikaMonu”) on November 23, 2015.

The following tables summarize the components of intangible assets and related accumulated amortization balances at June 30, 2018 and March 31, 2018 (in thousands):


	As of June 30, 2018
	Gross Carrying Amount		Accumulated amortization		Net Carrying Amount
Intangible assets:
Product designs	$	590	$	(590)	$	—
Patents		4,220		(1,309)		2,911
Software		80		(80)		—
Total	$	4,890	$	(1,979)	$	2,911


	As of March 31, 2018
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Intangible assets:
Product designs	$	590	$	(590)	$	—
Patents		4,220		(1,231)		2,989
Software		80		(80)		—
Total	$	4,890	$	(1,901)	$	2,989

Amortization of intangible assets included in cost of revenues was $78,000 and $78,000 for the three months ended June 30, 2018 and 2017, respectively.

As of June 30, 2018, the estimated future amortization expense of intangible assets in the table above is as follows (in thousands):


Fiscal year ending March 31,
2019 (remaining nine months)	$	189
2020		233
2021		233
2022		233
2023		233
Thereafter		1,790
Total	$	2,911



	June 30, 2018		March 31, 2018
	(In thousands)
Accrued expenses and other liabilities:
Accrued compensation	$	2,547	$	2,786
Accrued professional fees		42		31
Accrued commissions		323		299
Contingent consideration		1,112		1,102
Accrued retention payment		322		291
Miscellaneous accrued expenses		841		1,054
	$	5,187	$	5,563



	June 30, 2018		March 31, 2018
	(In thousands)
Other accrued expenses:
Contingent consideration	$	4,438	$	4,411
Other long-term accrued liabilities		322		291
	$	4,760	$	4,702

4. GOODWILL	3 Months Ended
4. GOODWILL	Jun. 30, 2018
Goodwill.
NOTE 4-GOODWILL.	NOTE 4—GOODWILL Goodwill represents the difference between the purchase price and the estimated fair value of the identifiable assets acquired and liabilities assumed in a business combination. The Company tests for goodwill impairment on an annual basis, or more frequently if events or changes in circumstances indicate that the asset is more likely than not impaired. The Company has one reporting unit. The Company assesses goodwill for impairment on an annual basis on the last day of February in the fourth quarter of its fiscal year. The Company had a goodwill balance of $8.0 million as of both March 31, 2018 and June 30, 2018. The goodwill resulted from the acquisition of MikaMonu Group Ltd. in fiscal 2016. The Company utilized a two-step quantitative analysis to complete its annual impairment test during the fourth quarter of fiscal 2018 and concluded that there was no impairment, as the fair value of its sole reporting unit exceeded its carrying value. The Company determined that the second step of the impairment test was not necessary. No triggering event took place subsequent to the fiscal 2018 annual assessment that necessitated a quantitative impairment analysis for the Company’s one reporting unit.

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

5. INCOME TAXES	3 Months Ended
5. INCOME TAXES	Jun. 30, 2018
INCOME TAXES
NOTE 5-INCOME TAXES	NOTE 5—INCOME TAXES The current portion of the Company’s unrecognized tax benefits was $0 at both June 30, 2018 and March 31, 2018. The long-term portion at June 30, 2018 and March 31, 2018 was $619,000 and $619,000, respectively, of which the timing of the resolution is uncertain. As of June 30, 2018, $2.2 million of unrecognized tax benefits had been recorded as a reduction to net deferred tax assets. As of June 30, 2018, the Company’s net deferred tax assets of $6.6 million were subject to a valuation allowance of $6.5 million. As of March 31, 2018, the Company’s net deferred tax assets of $6.0 million were subject to a valuation allowance of $5.9 million. On December 22, 2017, the “Tax Cuts and Jobs Act” ("H.R. 1") was signed into law, significantly impacting several sections of the Internal Revenue Code. Following the enactment of H.R. 1, the SEC staff issued SAB 118, which provides guidance on accounting for the tax effects of the law. SAB 118 provides a measurement period that should not extend beyond one year from the enactment date of H.R. 1 for companies to complete the accounting under ASC 740. In accordance with SAB 118, the Company must reflect the income tax effects of those aspects of H.R. 1 for which the accounting under ASC 740 is complete. To the extent that the Company’s accounting for certain income tax effects of H.R. 1 is incomplete but the Company is able to determine a reasonable estimate, the Company must record a provisional estimate in the financial statements. If the Company cannot determine a provisional estimate to be included in the financial statements, it should continue to apply ASC 740 on the basis of the provisions of the tax law that were in effect immediately before the enactment of H.R 1. H.R. 1 includes significant changes to the U.S. corporate income tax system, including a permanent reduction in the corporate income tax rate from 35% to 21%, limitations on the deductibility of interest expense and executive compensation and the transition of U.S. international taxation from a worldwide tax system to a territorial tax system. We re-measured certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future. The re-measurement of our deferred tax balance of $1.1 million was offset by application of our valuation allowance. We calculated our best estimate of the impact of H.R. 1 in the fiscal 2018 year end income tax provision, including the impact of the one-time transition tax, in accordance with our understanding of H.R. 1 and guidance available as of the date of this filing and recorded a tax expense of $367,000 in the year ended March 31, 2018 related to the transition tax associated with deemed repatriation of foreign earnings. As the Company completes the analysis of H.R. 1, collects and prepares necessary data, and interprets any additional guidance, the Company may make adjustments to its initial assessment. Pursuant to Staff Accounting Bulletin No. 118, adjustments to the provisional amounts recorded by the Company that are identified within a subsequent measurement period of up to one year from the enactment date will be included as an adjustment to tax expense from continuing operations in the period the amounts are determined. The Company’s original estimate may be materially impacted by a number of additional considerations, including but not limited to the issuance of the final regulations and the Company’s ongoing analysis of the new law. H.R. 1 subjects a U.S. shareholder to tax on global intangible low-taxed income (GILTI) earned by certain foreign subsidiaries. The FASB Staff Q&A, Topic 740, No. 5, Accounting for Global Intangible Low-Taxed Income, states that an entity can make an accounting policy election to either recognize deferred taxes for temporary basis differences expected to reverse as GILTI in future years or provide for the tax expense related to GILTI in the year the tax is incurred. At June 30, 2018, the Company has estimated the impact of the GILTI income inclusion as part of the Company’s estimate of its fiscal 2019 income taxes. Due to the Company’s valuation allowance in the United States, it is projected that there will be no net income tax effect related to GILTI in the Company’s fiscal year ending March 31, 2019. Management believes that within the next twelve months the Company will have no reduction in uncertain tax benefits, including interest and penalties, related to positions taken with respect to credits and loss carryforwards on previously filed tax returns. The Company’s policy is to include interest and penalties related to unrecognized tax benefits within the provision for income taxes in the Condensed Consolidated Statements of Operations. The Company is subject to taxation in the United States and various state and foreign jurisdictions. Fiscal years 2013 through 2018 remain open to examination by federal tax authorities, and fiscal years 2011 through 2018 remain open to examination by California tax authorities. The Company’s estimated annual effective income tax rate was approximately (4.8%) and (9.9%) as of June 30, 2018 and 2017, respectively. The annual effective tax rates as of June 30, 2018 and 2017 vary from the United States statutory income tax rate primarily due to valuation allowances in the United States, whereby pre-tax losses do not result in the recognition of corresponding income tax benefits and expenses, the foreign tax differential, and the impact of new tax reform.

6. FINANCIAL INSTRUMENTS

3 Months Ended

Jun. 30, 2018

FINANCIAL INSTRUMENTS

NOTE 6-FINANCIAL INSTRUMENTS

NOTE 6—FINANCIAL INSTRUMENTS

Fair value measurements

Authoritative accounting guidance for fair value measurements provides a framework for measuring fair value and related disclosures. The guidance applies to all financial assets and financial liabilities that are measured on a recurring basis. The guidance requires fair value measurement to be classified and disclosed in one of the following three categories:

Level 1: Valuations based on quoted prices in active markets for identical assets and liabilities. The fair value of available-for-sale securities included in the Level 1 category is based on quoted prices that are readily and regularly available in an active market. As of June 30, 2018, the Level 1 category included money market funds of $6.1 million, which were included in cash and cash equivalents on the Condensed Consolidated Balance Sheets.

Level 2: Valuations based on observable inputs (other than Level 1 prices), such as quoted prices for similar assets at the measurement date; quoted prices in markets that are not active; or other inputs that are observable, either directly or indirectly. The fair value of available-for-sale securities included in the Level 2 category is based on the market values obtained from an independent pricing service that were evaluated using pricing models that vary by asset class and may incorporate available trade, bid and other market information and price quotes from well-established independent pricing vendors and broker-dealers. As of June 30, 2018, the Level 2 category included short-term investments $16.1 million and long-term investments of $11.9 million, which were comprised of certificates of deposit, corporate debt securities and government and agency securities.

Level 3: Valuations based on inputs that are unobservable and involve management judgment and the reporting entity’s own assumptions about market participants and pricing. As of June 30, 2018, the Company’s Level 3 financial instruments measured at fair value on the Condensed Consolidated Balance Sheets consisted of the contingent consideration liability related to the acquisition of MikaMonu. The fair value of the contingent consideration liability was initially determined as of the acquisition date using unobservable inputs. These inputs include the estimated amount and timing of future cash flows, the probability of success (achievement of the various contingent events) and a risk-adjusted discount rate of approximately 14.8% used to adjust the probability-weighted cash flows to their present value. Subsequent to the acquisition date, at each reporting period, the contingent consideration liability is re-measured to fair value with changes recorded in selling, general and administrative expenses in the Consolidated Statements of Operations. The change in fair value for the three month period ended June 30, 2018 was $36,000.

The fair value of financial assets measured on a recurring basis is as follows (in thousands):


			Fair Value Measurements at Reporting Date Using
			Quoted Prices
			in Active		Significant
			Markets for		Other		Significant
			Identical Assets		Observable		Unobservable
			and Liabilities		Inputs		Inputs
	June 30, 2018		(Level 1)		(Level 2)		(Level 3)
Assets:
Money market funds	$	6,071	$	6,071	$	—	$	—
Marketable securities		28,087		—		28,087		—
Total	$	34,158	$	6,071	$	28,087	$	—

Liabilities:
Contingent consideration	$	5,550	$	—	$	—	$	5,550


			Fair Value Measurements at Reporting Date Using
			Quoted Prices
			in Active		Significant
			Markets for		Other		Significant
			Identical Assets		Observable		Unobservable
			and Liabilities		Inputs		Inputs
	March 31, 2018		(Level 1)		(Level 2)		(Level 3)
Assets:
Money market funds	$	6,788	$	6,788	$	—	$	—
Marketable securities		26,047		—		26,047		—
Total	$	32,835	$	6,788	$	26,047	$	—

Liabilities:
Contingent consideration	$	5,514	$	—	$	—	$	5,514

Short-term and long-term investments

All of the Company’s short-term and long-term investments are classified as available-for-sale. Available-for-sale debt securities with maturities greater than twelve months are classified as long-term investments when they are not intended for use in current operations. Investments in available-for-sale securities are reported at fair value with unrecognized gains (losses), net of tax, as a component of accumulated other comprehensive loss in the Condensed Consolidated Balance Sheets. The Company had money market funds of $6.1 million and $6.8 million at June 30, 2018 and March 31, 2018, respectively, included in cash and cash equivalents on the Condensed Consolidated Balance Sheets. The Company monitors its investments for impairment periodically and records appropriate reductions in carrying values when declines are determined to be other-than-temporary.

The following table summarizes the Company’s available-for-sale investments:


	June 30, 2018
			Gross		Gross
			Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
	(In thousands)
Short-term investments:
Certificates of deposit	$	10,251	$	—	$	(42)	$	10,209
Foreign government obligations		5,968		—		(11)		5,957
Total short-term investments	$	16,219	$	—	$	(53)	$	16,166
Long-term investments:
Certificates of deposit	$	9,250	$	—	$	(79)	$	9,171
Agency bonds		1,502		—		(4)		1,498
Foreign government obligations		1,255		—		(3)		1,252
Total long-term investments	$	12,007	$	—	$	(86)	$	11,921


	March 31, 2018
			Gross		Gross
			Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
	(In thousands)
Short-term investments:
Agency bonds	$	3,996	$	—	$	(1)	$	3,995
Foreign government obligations		5,428		—		(21)		5,407
Certificates of deposit		8,750		—		(28)		8,722
Total short-term investments	$	18,174	$	—	$	(50)	$	18,124
Long-term investments:
Certificates of deposit	$	8,000	$	—	$	(77)	$	7,923
Total long-term investments	$	8,000	$	—	$	(77)	$	7,923

The Company’s investment portfolio consists of both corporate and governmental securities that have a maximum maturity of three years. All unrealized gains and losses are due to changes in interest rates and bond yields. Subject to normal credit risks, the Company has the ability to realize the full value of all these investments upon maturity.

The deferred tax asset related to unrecognized gains and losses on short-term and long-term investments was $31,000 and $29,000 at June 30, 2018 and March 31, 2018, respectively.

As of June 30, 2018, contractual maturities of the Company’s available-for-sale investments were as follows:


			Fair
	Cost		Value
	(In thousands)
Maturing within one year	$	16,219	$	16,166
Maturing in one to three years		12,007		11,921
	$	28,226	$	28,087

The Company classifies its short-term investments as “available-for-sale” as they are intended to be available for use in current operations.

7. COMMITMENTS AND CONTINGENCIES	3 Months Ended
7. COMMITMENTS AND CONTINGENCIES	Jun. 30, 2018
COMMITMENTS AND CONTINGENCIES.
NOTE 7-COMMITMENTS AND CONTINGENCIES	NOTE 7—COMMITMENTS AND CONTINGENCIES Indemnification obligations The Company is a party to a variety of agreements pursuant to which it may be obligated to indemnify the other party with respect to certain matters. Typically, these obligations arise in the context of contracts entered into by the Company, under which the Company agrees to hold the other party harmless against losses arising from a breach of representations and covenants related to such matters as title to assets sold and certain intellectual property rights. In each of these circumstances, payment by the Company is conditioned on the other party making a claim pursuant to the procedures specified in the particular contract, which procedures typically allow the Company to challenge the other party’s claims. Further, the Company’s obligations under these agreements may be limited in terms of time and/or amount, and in some instances, the Company may have recourse against third parties for certain payments made by it under these agreements. It is not possible to predict the maximum potential amount of future payments that may be required under these or similar agreements due to the conditional nature of the Company’s obligations and the unique facts and circumstances involved in each particular agreement. Historically, payments made by the Company under these agreements have not had a material effect on its business, financial condition, cash flows or results of operations. Product warranties The Company warrants its products to be free of defects generally for a period of three years. The Company estimates its warranty costs based on historical warranty claim experience and includes such costs in cost of revenues. Warranty costs and the accrued warranty liability were not material as of June 30, 2018 and March 31, 2018 and for the three months ended June 30, 2018 or 2017.

8. STOCK- BASED COMPENSATION

3 Months Ended

Jun. 30, 2018

STOCK- BASED COMPENSATION

NOTE 8-STOCK- BASED COMPENSATION

NOTE 8—STOCK-BASED COMPENSATION

As of June 30, 2018, 4,374,461 shares of common stock were available for grant under the Company’s 2016 Equity Incentive Plan.

The following table summarizes the Company’s stock option activities for the three months ended June 30, 2018:


			Weighted
		Number of Shares	Average	Weighted
	Shares	Underlying	Remaining	Average
	Available for	Options	Contractual	Exercise		Intrinsic
	Grant	Outstanding	Life (Years)	Price		Value
Balance at March 31, 2018	4,444,301	7,874,267		$	5.45
Granted	(78,590)	78,590		$	7.70
Exercised	—	(300,528)		$	3.92	$	1,054,096
Forfeited	8,750	(38,550)		$	4.57
Balance at June 30, 2018	4,374,461	7,613,779	5.53	$	5.53
Options vested and exercisable		5,046,534	4.08	$	5.34	$	11,189,643
Options vested and expected to vest		7,556,754	5.51	$	5.53	$	15,312,078

The weighted average fair value per underlying share of options granted during the three months ended June 30, 2018 and 2017 was $2.76 and $2.58, respectively.

Options outstanding by exercise price at June 30, 2018 were as follows:


				Number of	Options Outstanding			Options Exercisable
				Shares	Weighted		Weighted Average		Weighted
				Underlying	Average		Remaining	Number	Average
				Options	Exercise		Contractual	Vested and	Exercise
Exercise Price				Outstanding	Price		Life (Years)	Exercisable	Price
$	2.43	-	3.60	794,891	$	3.36	3.99	608,537	$	3.33
$	3.75	-	4.34	828,326	$	4.09	2.67	792,876	$	4.08
$	4.43	-	4.98	1,052,821	$	4.88	5.37	629,617	$	4.83
$	4.99	-	5.23	1,157,976	$	5.10	7.21	637,576	$	5.18
$	5.28	-	5.76	762,790	$	5.55	5.98	619,466	$	5.61
$	6.00	-	6.45	777,918	$	6.19	5.00	550,685	$	6.20
$	6.54	-	6.86	1,114,076	$	6.74	5.21	874,185	$	6.70
$	7.00	-	7.40	812,001	$	7.22	7.67	225,012	$	7.09
$	7.70	-	8.09	204,400	$	7.95	9.68	-	$	-
$	9.20			108,580	$	9.20	2.59	108,580	$	9.20
				7,613,779	$	5.53	5.53	5,046,534	$	5.34

The following table summarizes stock-based compensation expense by line item in the Condensed Consolidated Statements of Operations, all relating to employee stock plans:


	Three Months Ended June 30,
	2018		2017
	(In thousands)
Cost of revenues	$	53	$	47
Research and development		323		267
Selling, general and administrative		166		164
Total	$	542	$	478

As stock-based compensation expense recognized in the Condensed Consolidated Statement of Operations is based on awards ultimately expected to vest, it has been reduced for estimated forfeitures in accordance with authoritative guidance. The Company estimates forfeitures at the time of grant and revises the original estimates, if necessary, in subsequent periods if actual forfeitures differ from those estimates.

No tax benefit related to stock-based compensation was recognized in the three months ended June 30, 2018 due to a full valuation allowance. There were no windfall tax benefits realized from exercised stock options in either of these periods. Compensation cost capitalized within inventory at June 30, 2018 was immaterial. As of June 30, 2018, the Company’s total unrecognized compensation cost was $3.8 million, which will be recognized over a weighted average period of 2.11 years. The Company calculated the fair value of stock-based awards in the periods presented using the Black-Scholes option pricing model and the following weighted average assumptions:


	Three Months Ended June 30,
	2018			2017
	(In thousands)
Stock Option Plans:
Risk-free interest rate		2.78	%		1.91	%
Expected life (in years)		5.00			5.00
Volatility		35.6	%		36.5	%
Dividend yield		—	%		—	%
Employee Stock Purchase Plan:
Risk-free interest rate		2.09	%		1.04	%
Expected life (in years)		0.50			0.50
Volatility		37.7	%		51.1	%
Dividend yield		—	%		—	%

9. SEGMENT AND GEOGRAPHIC INFORMATION

3 Months Ended

Jun. 30, 2018

SEGMENT AND GEOGRAPHIC INFORMATION

NOTE 9-SEGMENT AND GEOGRAPHIC INFORMATION

NOTE 9—SEGMENT AND GEOGRAPHIC INFORMATION

Based on its operating management and financial reporting structure, the Company has determined that it has one reportable business segment: the design, development and sale of integrated circuits.

The following is a summary of net revenues by geographic area based on the location to which product is shipped:


	Three Months Ended June 30,
	2018		2017

United States	$	4,489	$	4,705
China		1,009		1,350
Singapore		2,003		2,202
Netherlands		2,399		1,202
Rest of the world		1,366		1,228
	$	11,266	$	10,687

All sales are denominated in United States dollars.

1. THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	3 Months Ended
	Jun. 30, 2018
The Company And Summary Of Significant Accounting Policies
Accounting principles	Basis of presentation The accompanying unaudited condensed consolidated financial statements of GSI Technology, Inc. and its subsidiaries (“GSI” or the “Company”) have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and pursuant to the instructions to Form 10-Q and Article 10 of Regulation S-X of the Securities and Exchange Commission. Accordingly, the interim financial statements do not include all of the information and footnotes required by GAAP for annual financial statements. These interim financial statements contain all adjustments (which consist of only normal, recurring adjustments) that are, in the opinion of management, necessary to state fairly the interim financial information included therein. The Company believes that the disclosures are adequate to make the information not misleading. However, these financial statements should be read in conjunction with the audited consolidated financial statements and related notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2018. The consolidated results of operations for the three months ended June 30, 2018 are not necessarily indicative of the results to be expected for the entire fiscal year.
Significant accounting policies	Significant accounting policies Except for the accounting policy for revenue recognition, which was updated as a result of adopting a new accounting standard related to revenue recognition, there have been no material changes to our significant accounting policies that were disclosed in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2018. See “Recent accounting pronouncements” below for additional information on the impact of the adoption of the new accounting standard for revenue recognition on the Company’s consolidated financial statements.
Recent accounting pronouncements	Recent accounting pronouncements In January 2017, the FASB issued ASU No. 2017-04, "Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment". The standard eliminates the second step in the goodwill impairment test which requires an entity to determine the implied fair value of the reporting unit’s goodwill. Instead, an entity should recognize an impairment loss if the carrying value of the net assets assigned to the reporting unit exceeds the fair value of the reporting unit, with the impairment loss not to exceed the amount of goodwill allocated to the reporting unit. The standard is effective for annual and interim goodwill impairment tests conducted in fiscal years beginning after December 15, 2019, with early adoption permitted. The Company does not anticipate the adoption of this guidance to have a material impact on its consolidated financial statements and related disclosures. In November 2016, the FASB issued ASU No. 2016-18, “Statement of Cash Flows (Topic 230): Restricted Cash”. ASU 2016-18 requires entities to include in their cash and cash-equivalent balances in the statement of cash flows those amounts that are deemed to be restricted cash and restricted cash equivalents. As a result, companies will no longer present transfers between cash and cash equivalents, and restricted cash and restricted cash equivalents in the statement of cash flows. The Company adopted ASU 2016-18 in the quarter ended June 30, 2018. Implementation of this guidance did not have a material impact on the Company’s consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” ASU 2016-13 replaces the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. For trade and other receivables, loans, and other financial instruments, the Company will be required to use a forward-looking expected loss model rather than the incurred loss model for recognizing credit losses which reflects losses that are probable. Credit losses relating to available-for-sale debt securities will also be recorded through an allowance for credit losses rather than as a reduction in the amortized cost basis of the securities. ASU 2016-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, with early adoption permitted beginning April 1, 2019. Application of the amendments is through a cumulative-effect adjustment to retained earnings as of the effective date. The Company is currently evaluating the impact of this standard on its consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842).” The core principle of Topic 842 is that a lessee should recognize the assets and liabilities that arise from leases. All leases create an asset and a liability for the lessee in accordance with FASB Concepts Statement No. 6, “Elements of Financial Statements,” and, therefore, recognition of those lease assets and lease liabilities represents a change of previous GAAP, which did not require lease assets and lease liabilities to be recognized for most leases. This ASU is effective for annual and interim periods beginning after December 15, 2018. Early adoption is permitted. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee have not significantly changed from previous GAAP. Although the Company is currently evaluating the impact the pronouncement will have on its consolidated financial statements and related disclosures, the Company expects that most of its operating lease commitments will be subject to the new standard and recognized as operating lease liabilities and right-of-use assets upon adoption. In January 2016, the FASB issued ASU 2016-01, “Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities.” ASU 2016-01 requires equity investments to be measured at fair value with changes in fair value recognized in net income and simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. The accounting standard update also updates certain presentation and disclosure requirements. The Company adopted ASU 2016-01 in the quarter ended June 30, 2018. Implementation of this guidance did not have a material impact on the Company’s consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)" and has subsequently issued several supplemental and/or clarifying ASUs (collectively, "ASC 606"). The new accounting standard outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance. The new standard requires a company to recognize revenue as control of goods or services transfers to a customer at an amount that reflects the expected consideration to be received in exchange for those goods or services. It defines a five-step approach for recognizing revenue, which may require a company to use more judgment and make more estimates than under the current standard. The Company adopted ASC 606 on April 1, 2018 using the modified retrospective transition method. The Company determines revenue recognition through the following steps: (1) identification of the contract with a customer; (2) identification of the performance obligations in the contract; (3) determination of the transaction price; (4) allocation of the transaction price to the performance obligations in the contract; and (5) recognition of revenue when, or as, we satisfy a performance obligation. The adoption of ASC 606 was applied to all contracts and did not have a significant impact on the Company’s retained earnings as the timing of Company’s revenue recognition under the new standard coincides with the way the Company previously recognized revenue. There was no impact on the opening retained earnings balance as of April 1, 2018 due to the adoption of ASC 606. The majority of the Company’s customer contracts, which may be in the form of purchase orders, contracts or purchase agreements, contain performance obligations for delivery of agreed upon products. Delivery of all performance obligations contained within a contract with a customer typically occurs at the same time (or within the same accounting period). Transfer of control typically occurs at the time of shipment or at the time the product is pulled from consignment as that is the point at which delivery has occurred, title and the risks and rewards of ownership have passed to the customer, and the Company has a right to payment. Thus, the Company will generally recognize revenue upon shipment of the product. Because all of the Company’s performance obligations relate to contracts with a duration of less than one year, the Company elected to apply the optional exemption practical expedient provided in ASC 606 and, therefore, is not required to disclose the aggregate amount of the transaction price allocated to performance obligations that are unsatisfied or partially unsatisfied at the end of the reporting period. The Company adjusts the transaction price for variable consideration. Variable consideration is not typically significant and primarily results from stock rotation rights and quick pay discounts provided to our distributors. As a practical expedient, the Company is recognizing the incremental costs of obtaining a contract, specifically commission expenses that have a period of benefit of less than twelve months, as an expense when incurred. Additionally, the Company has adopted an accounting policy to recognize shipping costs that occur after control transfers to the customer as a fulfillment activity. The Company’s contracts with customers do not typically include extended payment terms. Payment terms vary by contract type and type of customer and generally range from 30 to 60 days from shipment. Additionally, the Company has right to payment upon shipment. The Company records revenue net of sales tax, value added tax, excise tax and other taxes collected concurrent with product sales. The impact of such taxes on products sales is immaterial. The Company has also elected to recognize the cost for freight and shipping when control over the products sold passes to customers and revenue is recognized. The Company warrants its products to be free of defects generally for a period of three years. The Company estimates its warranty costs based on historical warranty claim experience and includes such costs in cost of revenues. Warranty costs and the accrued warranty liability were not material as of June 30, 2018. The majority of the Company’s revenue is derived from sales of SRAM products which represent approximately 97% of total revenues in the three months ended June 30, 2018. The majority of the Company’s revenue is derived from sales to distributors and contract manufacturers which represented approximately 54% and 44% of net revenue, respectively, for the three months ended June 30, 2018. Nokia, the Company’s largest customer, purchases products directly from the Company and through contract manufacturers and distributors. Based on information provided to the Company by its contract manufacturers and distributors, purchases by Nokia represented approximately 47% of the Company’s net revenues in the three months ended June 30, 2018. The Company historically deferred recognition of revenue on shipments to its distributors because it lacked fixed and determinable pricing for contracts in which the distributors had rights to price concessions from the Company upon shipment to the distributors’ customers. During fiscal 2018, the Company revised all of its distribution agreements to eliminate the uncertainty in pricing, allowing the Company to recognize revenue at the time of shipment to the distributors. As a result, the implementation of the guidance did not have a significant impact on the Company’s consolidated financial statements. See “Note 9 - Segment and Geographic Information” for revenue by shipment destination.

2. NET LOSS PER COMMON SHARE (Tables)

3 Months Ended

Jun. 30, 2018

NET LOSS PER COMMON SHARE

Basic and diluted net loss per share


	Three Months Ended June 30,
	2018		2017
	(In thousands, except per share amounts)
Net loss	$	(1,646)	$	(1,512)

Denominators:
Weighted average shares—Basic		21,567		20,805
Dilutive effect of employee stock options		—		—
Dilutive effect of employee stock purchase plan options		—		—
Weighted average shares—Dilutive		21,567		20,805
Net loss per common share—Basic	$	(0.08)	$	(0.07)
Net loss per common share—Diluted	$	(0.08)	$	(0.07)

Anti-dilutive shares


	Three Months Ended June 30,
	2018	2017
	(In thousands)
Shares underlying options and ESPP shares	3,044	2,560

3. BALANCE SHEET DETAIL (Tables)

3 Months Ended

Jun. 30, 2018

BALANCE SHEET DETAIL

Schedule of Inventories



	June 30, 2018		March 31, 2018
	(In thousands)
Inventories:
Work-in-progress	$	2,321	$	2,226
Finished goods		2,820		3,321
	$	5,141	$	5,547

Schedule of Accounts Receivable, Net



	June 30, 2018		March 31, 2018
	(In thousands)
Accounts receivable, net:
Accounts receivable	$	6,937	$	5,342
Less: Allowances for sales returns, doubtful accounts and other		(90)		(63)
	$	6,847	$	5,279

Schedule of Prepaid Expenses and Other Current Assets



	June 30, 2018		March 31, 2018
	(In thousands)
Prepaid expenses and other current assets:
Prepaid tooling and masks	$	271	$	163
Escrow deposit		750		750
Other receivables		514		370
Other prepaid expenses and other current assets		579		797
	$	2,114	$	2,080

Schedule of Property and Equipment, Net



	June 30, 2018		March 31, 2018
	(In thousands)
Property and equipment, net:
Computer and other equipment	$	18,926	$	17,845
Software		4,072		4,072
Land		3,900		3,900
Building and building improvements		3,306		2,310
Furniture and fixtures		102		82
Leasehold improvements		815		766
Construction in progress		230		965
		31,351		29,940
Less: Accumulated depreciation		(22,019)		(21,768)
	$	9,332	$	8,172

Schedule of Other Assets



	June 30, 2018		March 31, 2018
	(In thousands)
Other assets:
Escrow deposit	$	1,000	$	1,000
Non-current deferred income taxes		75		75
Deposits		126		132
	$	1,201	$	1,207

Schedule of Intangible Assets

The following tables summarize the components of intangible assets and related accumulated amortization balances at June 30, 2018 and March 31, 2018 (in thousands):


	As of June 30, 2018
	Gross Carrying Amount		Accumulated amortization		Net Carrying Amount
Intangible assets:
Product designs	$	590	$	(590)	$	—
Patents		4,220		(1,309)		2,911
Software		80		(80)		—
Total	$	4,890	$	(1,979)	$	2,911


	As of March 31, 2018
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Intangible assets:
Product designs	$	590	$	(590)	$	—
Patents		4,220		(1,231)		2,989
Software		80		(80)		—
Total	$	4,890	$	(1,901)	$	2,989

Estimated future amortization expense of intangible assets

As of June 30, 2018, the estimated future amortization expense of intangible assets in the table above is as follows (in thousands):


Fiscal year ending March 31,
2019 (remaining nine months)	$	189
2020		233
2021		233
2022		233
2023		233
Thereafter		1,790
Total	$	2,911

Schedule of Accrued Expenses and Other Liabilities



	June 30, 2018		March 31, 2018
	(In thousands)
Accrued expenses and other liabilities:
Accrued compensation	$	2,547	$	2,786
Accrued professional fees		42		31
Accrued commissions		323		299
Contingent consideration		1,112		1,102
Accrued retention payment		322		291
Miscellaneous accrued expenses		841		1,054
	$	5,187	$	5,563

Other Accrued Expenses



	June 30, 2018		March 31, 2018
	(In thousands)
Other accrued expenses:
Contingent consideration	$	4,438	$	4,411
Other long-term accrued liabilities		322		291
	$	4,760	$	4,702

6. FINANCIAL INSTRUMENTS (Tables)

3 Months Ended

Jun. 30, 2018

FINANCIAL INSTRUMENTS

Schedule of fair value of financial assets measured on a recurring basis

The fair value of financial assets measured on a recurring basis is as follows (in thousands):


			Fair Value Measurements at Reporting Date Using
			Quoted Prices
			in Active		Significant
			Markets for		Other		Significant
			Identical Assets		Observable		Unobservable
			and Liabilities		Inputs		Inputs
	June 30, 2018		(Level 1)		(Level 2)		(Level 3)
Assets:
Money market funds	$	6,071	$	6,071	$	—	$	—
Marketable securities		28,087		—		28,087		—
Total	$	34,158	$	6,071	$	28,087	$	—

Liabilities:
Contingent consideration	$	5,550	$	—	$	—	$	5,550


			Fair Value Measurements at Reporting Date Using
			Quoted Prices
			in Active		Significant
			Markets for		Other		Significant
			Identical Assets		Observable		Unobservable
			and Liabilities		Inputs		Inputs
	March 31, 2018		(Level 1)		(Level 2)		(Level 3)
Assets:
Money market funds	$	6,788	$	6,788	$	—	$	—
Marketable securities		26,047		—		26,047		—
Total	$	32,835	$	6,788	$	26,047	$	—

Liabilities:
Contingent consideration	$	5,514	$	—	$	—	$	5,514

Schedule of available-for-sale investments


	June 30, 2018
			Gross		Gross
			Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
	(In thousands)
Short-term investments:
Certificates of deposit	$	10,251	$	—	$	(42)	$	10,209
Foreign government obligations		5,968		—		(11)		5,957
Total short-term investments	$	16,219	$	—	$	(53)	$	16,166
Long-term investments:
Certificates of deposit	$	9,250	$	—	$	(79)	$	9,171
Agency bonds		1,502		—		(4)		1,498
Foreign government obligations		1,255		—		(3)		1,252
Total long-term investments	$	12,007	$	—	$	(86)	$	11,921


	March 31, 2018
			Gross		Gross
			Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
	(In thousands)
Short-term investments:
Agency bonds	$	3,996	$	—	$	(1)	$	3,995
Foreign government obligations		5,428		—		(21)		5,407
Certificates of deposit		8,750		—		(28)		8,722
Total short-term investments	$	18,174	$	—	$	(50)	$	18,124
Long-term investments:
Certificates of deposit	$	8,000	$	—	$	(77)	$	7,923
Total long-term investments	$	8,000	$	—	$	(77)	$	7,923

Schedule of contractual maturities of the available-for-sale investments


			Fair
	Cost		Value
	(In thousands)
Maturing within one year	$	16,219	$	16,166
Maturing in one to three years		12,007		11,921
	$	28,226	$	28,087

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References + Details

8. STOCK- BASED COMPENSATION (Tables)

3 Months Ended

Jun. 30, 2018

STOCK- BASED COMPENSATION

Summary of stock option activities


			Weighted
		Number of Shares	Average	Weighted
	Shares	Underlying	Remaining	Average
	Available for	Options	Contractual	Exercise		Intrinsic
	Grant	Outstanding	Life (Years)	Price		Value
Balance at March 31, 2018	4,444,301	7,874,267		$	5.45
Granted	(78,590)	78,590		$	7.70
Exercised	—	(300,528)		$	3.92	$	1,054,096
Forfeited	8,750	(38,550)		$	4.57
Balance at June 30, 2018	4,374,461	7,613,779	5.53	$	5.53
Options vested and exercisable		5,046,534	4.08	$	5.34	$	11,189,643
Options vested and expected to vest		7,556,754	5.51	$	5.53	$	15,312,078

Schedule of options outstanding by exercise price


				Number of	Options Outstanding			Options Exercisable
				Shares	Weighted		Weighted Average		Weighted
				Underlying	Average		Remaining	Number	Average
				Options	Exercise		Contractual	Vested and	Exercise
Exercise Price				Outstanding	Price		Life (Years)	Exercisable	Price
$	2.43	-	3.60	794,891	$	3.36	3.99	608,537	$	3.33
$	3.75	-	4.34	828,326	$	4.09	2.67	792,876	$	4.08
$	4.43	-	4.98	1,052,821	$	4.88	5.37	629,617	$	4.83
$	4.99	-	5.23	1,157,976	$	5.10	7.21	637,576	$	5.18
$	5.28	-	5.76	762,790	$	5.55	5.98	619,466	$	5.61
$	6.00	-	6.45	777,918	$	6.19	5.00	550,685	$	6.20
$	6.54	-	6.86	1,114,076	$	6.74	5.21	874,185	$	6.70
$	7.00	-	7.40	812,001	$	7.22	7.67	225,012	$	7.09
$	7.70	-	8.09	204,400	$	7.95	9.68	-	$	-
$	9.20			108,580	$	9.20	2.59	108,580	$	9.20
				7,613,779	$	5.53	5.53	5,046,534	$	5.34

Summary of stock-based compensation expense by line item


	Three Months Ended June 30,
	2018		2017
	(In thousands)
Cost of revenues	$	53	$	47
Research and development		323		267
Selling, general and administrative		166		164
Total	$	542	$	478

Schedule of weighted average assumptions


	Three Months Ended June 30,
	2018			2017
	(In thousands)
Stock Option Plans:
Risk-free interest rate		2.78	%		1.91	%
Expected life (in years)		5.00			5.00
Volatility		35.6	%		36.5	%
Dividend yield		—	%		—	%
Employee Stock Purchase Plan:
Risk-free interest rate		2.09	%		1.04	%
Expected life (in years)		0.50			0.50
Volatility		37.7	%		51.1	%
Dividend yield		—	%		—	%

9. SEGMENT AND GEOGRAPHIC INFORMATION (Tables)

3 Months Ended

Jun. 30, 2018

SEGMENT AND GEOGRAPHIC INFORMATION

Net revenues by geographic area


	Three Months Ended June 30,
	2018		2017

United States	$	4,489	$	4,705
China		1,009		1,350
Singapore		2,003		2,202
Netherlands		2,399		1,202
Rest of the world		1,366		1,228
	$	11,266	$	10,687

1. THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	3 Months Ended
	Jun. 30, 2018
Concentration of credit risk
Revenue, Practical Expedient, Remaining Performance Obligation	true
Revenue, Practical Expedient, Incremental Cost of Obtaining Contract	true
Warranty period	3 years
Minimum
Concentration of credit risk
Payment term	30 days
Maximum
Concentration of credit risk
Payment term	60 days
Net revenue \| Distributors
Concentration of credit risk
Percentage attributable to customers	54.00%
Net revenue \| Contract Manufacturers
Concentration of credit risk
Percentage attributable to customers	44.00%
Net revenue \| Nokia
Concentration of credit risk
Percentage attributable to customers	47.00%
Net revenue \| SRAM
Concentration of credit risk
Percentage attributable to customers	97.00%

2. NET LOSS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
NET LOSS PER COMMON SHARE
Net loss	$ (1,646)	$ (1,512)
Weighted average shares-Basic	21,567	20,805
Weighted average shares-Dilutive	21,567	20,805
Net loss per common share - Basic	$ (0.08)	$ (0.07)
Net loss per common share - Diluted	$ (0.08)	$ (0.07)

2. NET LOSS PER COMMON SHARE - Shares underlying options (Details) - shares shares in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
NET LOSS PER COMMON SHARE
Shares underlying options and ESPP shares	3,044	2,560

3. BALANCE SHEET DETAIL - Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Inventories:
Work-in-progress	$ 2,321	$ 2,226
Finished goods	2,820	3,321
Total Inventory	$ 5,141	$ 5,547

3. BALANCE SHEET DETAIL - Accounts receivable, net (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Accounts receivable, net:
Accounts receivable	$ 6,937	$ 5,342
Less: Allowances for sales returns, doubtful accounts and other	(90)	(63)
Total accounts receivable, net	$ 6,847	$ 5,279

3. BALANCE SHEET DETAIL - Prepaid expenses and other current assets (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Prepaid expenses and other current assets:
Prepaid tooling and masks	$ 271	$ 163
Escrow deposit	750	750
Other receivables	514	370
Other prepaid expenses and other current assets	579	797
Total prepaid expenses and other current assets	$ 2,114	$ 2,080

3. BALANCE SHEET DETAIL - Property, Plant and Equipment (Details) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018
Property and equipment, net:
Property and equipment, gross	$ 31,351,000		$ 29,940,000
Less: Accumulated depreciation	(22,019,000)		(21,768,000)
Property, Plant and Equipment, Net, Total	9,332,000		8,172,000
Depreciation	251,000	$ 228,000
Computer and other equipment
Property and equipment, net:
Property and equipment, gross	18,926,000		17,845,000
Software
Property and equipment, net:
Property and equipment, gross	4,072,000		4,072,000
Land
Property and equipment, net:
Property and equipment, gross	3,900,000		3,900,000
Building and building improvements
Property and equipment, net:
Property and equipment, gross	3,306,000		2,310,000
Furniture and fixtures
Property and equipment, net:
Property and equipment, gross	102,000		82,000
Leasehold improvements
Property and equipment, net:
Property and equipment, gross	815,000		766,000
Construction in progress
Property and equipment, net:
Property and equipment, gross	$ 230,000		$ 965,000

3. BALANCE SHEET DETAIL - Other assets (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Other assets:
Escrow deposit	$ 1,000	$ 1,000
Non-current deferred income taxes	75	75
Deposits	126	132
Total Other Assets	$ 1,201	$ 1,207

3. BALANCE SHEET DETAIL - Intangible assets (Details) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018
Gross Carrying Amount	$ 4,890,000		$ 4,890,000
Accumulated Amortization	(1,979,000)		(1,901,000)
Total	2,911,000		2,989,000
Amortization of intangible assets	78,000	$ 78,000
Product designs
Gross Carrying Amount	590,000		590,000
Accumulated Amortization	(590,000)		(590,000)
Patents
Gross Carrying Amount	4,220,000		4,220,000
Accumulated Amortization	(1,309,000)		(1,231,000)
Total	2,911,000		2,989,000
Software.
Gross Carrying Amount	80,000		80,000
Accumulated Amortization	$ (80,000)		$ (80,000)

3. BALANCE SHEET DETAIL - Future amortization (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Year Ending March 31,
2019 (remaining nine months)	$ 189
2020	233
2021	233
2022	233
2023	233
Thereafter	1,790
Total	$ 2,911	$ 2,989

3. BALANCE SHEET DETAIL - Accrued expenses and other liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Accrued expenses and other liabilities:
Accrued compensation	$ 2,547	$ 2,786
Accrued professional fees	42	31
Accrued commissions	323	299
Contingent consideration	1,112	1,102
Accrued retention payment	322	291
Miscellaneous accrued expenses	841	1,054
Total Accrued Expenses and Other Liabilities	$ 5,187	$ 5,563

3. BALANCE SHEET DETAIL - Other accrued expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Other accrued expenses:
Contingent consideration	$ 4,438	$ 4,411
Other long term accrued liabilities	322	291
Other accrued expenses	$ 4,760	$ 4,702

4. GOODWILL (Details)	3 Months Ended
4. GOODWILL (Details)	Jun. 30, 2018 USD ($) segment	Mar. 31, 2018 USD ($)
Goodwill.
Number of reporting units \| segment	1
Goodwill	$ 7,978,000	$ 7,978,000
Goodwill impairment		$ 0

5. INCOME TAXES (Details) - USD ($)	3 Months Ended			6 Months Ended
5. INCOME TAXES (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Jun. 30, 2018	Mar. 31, 2018
INCOME TAXES
Unrecognized tax benefits, current	$ 0			$ 0	$ 0
Unrecognized tax benefits, noncurrent	619,000			619,000	619,000
Deferred tax assets unrecognized tax benefit	2,200,000			2,200,000
Possible reduction in uncertain tax benefits	0			$ 0
Corporate income tax rate		35.00%		21.00%
Deferred Tax Assets, Net	6,600,000			$ 6,600,000	6,000,000
Valuation allowance	$ (6,500,000)			$ (6,500,000)	$ (5,900,000)
Effective annual income tax rate (as a percentage)	(4.80%)		(9.90%)

5. INCOME TAXES - Tax Cuts and Jobs Act (Details) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
	Dec. 31, 2017	Jun. 30, 2018	Mar. 31, 2018
INCOME TAXES
Corporate income tax rate	35.00%	21.00%
Estimated tax provision			$ 367,000
Deferred tax benefit related to valuation allowance			$ 1,100,000

6. FINANCIAL INSTRUMENTS (Details) - USD ($)	3 Months Ended
6. FINANCIAL INSTRUMENTS (Details) - USD ($)	Jun. 30, 2018	Mar. 31, 2018
Fair value measurements
Discount rate (as a percent)	14.80%
Short-term investments	$ 16,166,000	$ 18,124,000
Long-term investments	11,921,000	7,923,000
Recurring
Fair value measurements
Money market funds	6,071,000	6,788,000
Marketable securities	28,087,000	26,047,000
Assets	34,158,000	32,835,000
Contingent consideration liability	5,550,000	5,514,000
Recurring \| Level 1
Fair value measurements
Money market funds	6,071,000	6,788,000
Assets	6,071,000	6,788,000
Recurring \| Level 2
Fair value measurements
Marketable securities	28,087,000	26,047,000
Assets	28,087,000	26,047,000
Recurring \| Level 3
Fair value measurements
Contingent consideration liability	5,550,000	$ 5,514,000
Selling, general and administrative
Fair value measurements
Change in contingent consideration liability	$ 36,000

6. FINANCIAL INSTRUMENTS - Available for sale investments (Details) - USD ($)	3 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Available-for-sale investments
Cost	$ 28,226,000
Fair Value	$ 28,087,000
Other information
Maximum maturity period of investment portfolio	3 years
Deferred tax asset related to unrecognized gains and losses on short-term and long-term investments	$ 31,000	$ 29,000
Short-term investments
Available-for-sale investments
Cost	16,219,000	18,174,000
Gross Unrealized Losses	(53,000)	(50,000)
Fair Value	16,166,000	18,124,000
Short-term investments \| Agency bonds
Available-for-sale investments
Cost		3,996,000
Gross Unrealized Losses		(1,000)
Fair Value		3,995,000
Short-term investments \| Foreign government obligations
Available-for-sale investments
Cost	5,968,000	5,428,000
Gross Unrealized Losses	(11,000)	(21,000)
Fair Value	5,957,000	5,407,000
Short-term investments \| Certificates of deposit
Available-for-sale investments
Cost	10,251,000	8,750,000
Gross Unrealized Losses	(42,000)	(28,000)
Fair Value	10,209,000	8,722,000
Long-term investment
Available-for-sale investments
Cost	12,007,000	8,000,000
Gross Unrealized Losses	(86,000)	(77,000)
Fair Value	11,921,000	7,923,000
Long-term investment \| Agency bonds
Available-for-sale investments
Cost	1,502,000
Gross Unrealized Losses	(4,000)
Fair Value	1,498,000
Long-term investment \| Foreign government obligations
Available-for-sale investments
Cost	1,255,000
Gross Unrealized Losses	(3,000)
Fair Value	1,252,000
Long-term investment \| Certificates of deposit
Available-for-sale investments
Cost	9,250,000	8,000,000
Gross Unrealized Losses	(79,000)	(77,000)
Fair Value	$ 9,171,000	$ 7,923,000

6. FINANCIAL INSTRUMENTS - Contractual maturities (Details) $ in Thousands	Jun. 30, 2018 USD ($)
FINANCIAL INSTRUMENTS
Maturing within one year, Cost	$ 16,219
Maturing in one to three years, Cost	12,007
Total	28,226
Maturing within one year, Fair Value	16,166
Maturing in one to three years, Fair Value	11,921
Fair Value	$ 28,087

7. COMMITMENTS AND CONTINGENCIES - Royalties and Product Warranties (Details)	3 Months Ended
	Jun. 30, 2018
Product warranties
Warranty period	3 years

8. STOCK- BASED COMPENSATION - Stock options activities (Details)	3 Months Ended
	Jun. 30, 2018 USD ($) $ / shares shares
STOCK- BASED COMPENSATION
Shares available for grant, Beginning	4,444,301
Granted (in shares)	(78,590)
Forfeited (in shares)	8,750
Shares available for grant, Ending	4,374,461
Number of Shares Underlying Options Outstanding
Balance at the beginning of the period (in shares)	7,874,267
Granted (in shares)	78,590
Exercised (in shares)	(300,528)
Forfeited (in shares)	(38,550)
Balance at the end of the period (in shares)	7,613,779
Options vested and exercisable (in shares)	5,046,534
Options vested and expected to vest (in shares)	7,556,754
Weighted Average Remaining Contractual Life
Options weighted average remaining contractual life	5 years 6 months 11 days
Options vested and exercisable	4 years 29 days
Options vested and expected to vest	5 years 6 months 4 days
Weighted Average Exercise Price
Balance at the beginning of the period (in dollars per share) \| $ / shares	$ 5.45
Granted (in dollars per share) \| $ / shares	7.70
Exercised (in dollars per share) \| $ / shares	3.92
Forfeited (in dollars per share) \| $ / shares	4.57
Balance at the end of the period (in dollars per share) \| $ / shares	5.53
Options vested and exercisable (in dollars per share) \| $ / shares	5.34
Options vested and expected to vest (in dollars per share) \| $ / shares	$ 5.53
Intrinsic Value
Exercised (in dollars) \| $	$ 1,054,096
Options vested and exercisable (in dollars) \| $	11,189,643
Options vested and expected to vest (in dollars) \| $	$ 15,312,078

8. STOCK- BASED COMPENSATION - Options outstanding by exercise price (Details) - $ / shares	3 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Options outstanding by exercise price
Exercise Price (in dollars per share)	$ 5.53	$ 5.45
Number of Shares Underlying Options Outstanding (in shares)	7,613,779
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 5.53
Options Outstanding, Weighted Average Remaining Contractual Life	5 years 6 months 11 days
Options Exercisable, Number Vested and Exercisable (in shares)	5,046,534
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 5.34
$2.43 - $3.60
Options outstanding by exercise price
Exercise Price, low end of range (in dollars per share)	2.43
Exercise Price, high end of range (in dollars per share)	$ 3.60
Number of Shares Underlying Options Outstanding (in shares)	794,891
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 3.36
Options Outstanding, Weighted Average Remaining Contractual Life	3 years 11 months 27 days
Options Exercisable, Number Vested and Exercisable (in shares)	608,537
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 3.33
$3.75 - $4.34
Options outstanding by exercise price
Exercise Price, low end of range (in dollars per share)	3.75
Exercise Price, high end of range (in dollars per share)	$ 4.34
Number of Shares Underlying Options Outstanding (in shares)	828,326
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 4.09
Options Outstanding, Weighted Average Remaining Contractual Life	2 years 8 months 1 day
Options Exercisable, Number Vested and Exercisable (in shares)	792,876
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 4.08
$4.43 - $4.98
Options outstanding by exercise price
Exercise Price, low end of range (in dollars per share)	4.43
Exercise Price, high end of range (in dollars per share)	$ 4.98
Number of Shares Underlying Options Outstanding (in shares)	1,052,821
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 4.88
Options Outstanding, Weighted Average Remaining Contractual Life	5 years 4 months 13 days
Options Exercisable, Number Vested and Exercisable (in shares)	629,617
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 4.83
$4.99 - $5.23
Options outstanding by exercise price
Exercise Price, low end of range (in dollars per share)	4.99
Exercise Price, high end of range (in dollars per share)	$ 5.23
Number of Shares Underlying Options Outstanding (in shares)	1,157,976
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 5.10
Options Outstanding, Weighted Average Remaining Contractual Life	7 years 2 months 16 days
Options Exercisable, Number Vested and Exercisable (in shares)	637,576
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 5.18
$5.28 - $5.76
Options outstanding by exercise price
Exercise Price, low end of range (in dollars per share)	5.28
Exercise Price, high end of range (in dollars per share)	$ 5.76
Number of Shares Underlying Options Outstanding (in shares)	762,790
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 5.55
Options Outstanding, Weighted Average Remaining Contractual Life	5 years 11 months 23 days
Options Exercisable, Number Vested and Exercisable (in shares)	619,466
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 5.61
$6.00 - $6.45
Options outstanding by exercise price
Exercise Price, low end of range (in dollars per share)	6.00
Exercise Price, high end of range (in dollars per share)	$ 6.45
Number of Shares Underlying Options Outstanding (in shares)	777,918
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 6.19
Options Outstanding, Weighted Average Remaining Contractual Life	5 years
Options Exercisable, Number Vested and Exercisable (in shares)	550,685
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 6.20
$6.54 - $6.86
Options outstanding by exercise price
Exercise Price, low end of range (in dollars per share)	6.54
Exercise Price, high end of range (in dollars per share)	$ 6.86
Number of Shares Underlying Options Outstanding (in shares)	1,114,076
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 6.74
Options Outstanding, Weighted Average Remaining Contractual Life	5 years 2 months 16 days
Options Exercisable, Number Vested and Exercisable (in shares)	874,185
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 6.70
$7.00 - $7.40
Options outstanding by exercise price
Exercise Price, low end of range (in dollars per share)	7.00
Exercise Price, high end of range (in dollars per share)	$ 7.40
Number of Shares Underlying Options Outstanding (in shares)	812,001
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 7.22
Options Outstanding, Weighted Average Remaining Contractual Life	7 years 8 months 1 day
Options Exercisable, Number Vested and Exercisable (in shares)	225,012
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 7.09
$7.70 - $8.09
Options outstanding by exercise price
Exercise Price, low end of range (in dollars per share)	7.70
Exercise Price, high end of range (in dollars per share)	$ 8.09
Number of Shares Underlying Options Outstanding (in shares)	204,400
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 7.95
Options Outstanding, Weighted Average Remaining Contractual Life	9 years 8 months 5 days
$9.20
Options outstanding by exercise price
Exercise Price (in dollars per share)	$ 9.20
Number of Shares Underlying Options Outstanding (in shares)	108,580
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 9.20
Options Outstanding, Weighted Average Remaining Contractual Life	2 years 7 months 2 days
Options Exercisable, Number Vested and Exercisable (in shares)	108,580
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 9.20

8. STOCK- BASED COMPENSATION - Stock-based compensation expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Stock-based compensation expense by line item
Stock-based compensation expense	$ 542	$ 478
Other information
Income tax benefit recognized from allocation of share-based compensation expense	0
Windfall tax benefits realized	0	0
Unrecognized compensation costs	$ 3,800
Weighted average period of recognition of unrecognized compensation costs	2 years 1 month 10 days
Cost of revenues
Stock-based compensation expense by line item
Stock-based compensation expense	$ 53	47
Research and development
Stock-based compensation expense by line item
Stock-based compensation expense	323	267
Selling, general and administrative
Stock-based compensation expense by line item
Stock-based compensation expense	$ 166	$ 164

8. STOCK- BASED COMPENSATION - Weighted average assumptions (Details) - $ / shares	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Stock-based compensation
Weighted average fair value per underlying share of options granted (in dollars per share)	$ 2.76	$ 2.58
Employee stock options
Stock-based compensation
Risk-free interest rate, high end of range (as a percent)	2.78%	1.91%
Expected life	5 years	5 years
Volatility, high end of range (as a percent)	35.60%	36.50%
Employee stock purchase plan options
Stock-based compensation
Risk-free interest rate, high end of range (as a percent)	2.09%	1.04%
Expected life	6 months	6 months
Volatility, high end of range (as a percent)	37.70%	51.10%

9. SEGMENT AND GEOGRAPHIC INFORMATION (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2018 USD ($) segment	Jun. 30, 2017 USD ($)
Net revenues and long-lived assets by geographic area
Revenue, Net	$ 11,266	$ 10,687
Number of reporting units \| segment	1
United States
Net revenues and long-lived assets by geographic area
Revenue, Net	$ 4,489	4,705
China
Net revenues and long-lived assets by geographic area
Revenue, Net	1,009	1,350
Singapore
Net revenues and long-lived assets by geographic area
Revenue, Net	2,003	2,202
Netherlands
Net revenues and long-lived assets by geographic area
Revenue, Net	2,399	1,202
Rest of the world
Net revenues and long-lived assets by geographic area
Revenue, Net	$ 1,366	$ 1,228