Exar (EXAR) 10-Q 6 Feb 14 2014 Q3 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	9 Months Ended
	Dec. 29, 2013	Feb. 03, 2014
Document and Entity Information [Abstract]	'	'
Entity Registrant Name	'Exar Corporation	'
Document Type	'10-Q	'
Current Fiscal Year End Date	'--03-30	'
Entity Common Stock, Shares Outstanding	'	47,483,455
Amendment Flag	'false	'
Entity Central Index Key	'0000753568	'
Entity Current Reporting Status	'Yes	'
Entity Voluntary Filers	'No	'
Entity Filer Category	'Accelerated Filer	'
Entity Well-known Seasoned Issuer	'No	'
Document Period End Date	29-Dec-13	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (Unaudited) (USD $)	Dec. 29, 2013	Mar. 31, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$21,070	$14,718
Short-term marketable securities	154,702	190,587
Accounts receivable (net of allowances of $570 and $944)	21,699	12,614
Accounts receivable, related party (net of allowances of $462 and $346)	1,685	3,374
Inventories	24,950	19,430
Assets held for sale	13,083	'
Other current assets	3,645	3,177
Total current assets	240,834	243,900
Property, plant and equipment, net	8,784	24,100
Goodwill	29,573	10,356
Intangible assets, net	28,063	13,338
Other non-current assets	1,442	1,474
Total assets	308,696	293,168
Current liabilities:	'	'
Accounts payable	14,824	9,455
Accrued compensation and related benefits	4,352	3,624
Deferred income and allowances on sales to distributors	1,861	2,399
Deferred income and allowances on sales to related party distributor	8,017	9,475
Other current liabilities	11,151	15,215
Total current liabilities	40,205	40,168
Long-term lease financing obligations	106	1,342
Other non-current obligations	11,530	11,204
Total liabilities	51,841	52,714
Commitments and contingencies (Notes 13, 14 and 15)	'	'
Stockholders' equity:	'	'
Common stock, $.0001 par value; 100,000,000 shares authorized; 47,501,051 and 46,607,246 shares outstanding	5	5
Additional paid-in capital	511,644	749,426
Accumulated other comprehensive loss	-980	-526
Treasury stock at cost, 0 and 19,924,369 shares	'	-248,983
Accumulated deficit	-253,814	-259,468
Total stockholders' equity	256,855	240,454
Total liabilities and stockholders’ equity	$308,696	$293,168

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $)	Dec. 29, 2013	Mar. 31, 2013
In Thousands, except Share data, unless otherwise specified
Accounts receivable, allowances (in Dollars)	$570	$944
Common stock par value (in Dollars per share)	$0.00	$0.00
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares outstanding	47,501,051	46,607,246
Treasury stock at cost, shares	0	19,924,369
Related Party [Member]	'	'
Accounts receivable, allowances (in Dollars)	$462	$346

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Dec. 30, 2012
Sales:	'	'	'	'
Net sales	$21,846	$22,235	$70,682	$63,210
Net sales, related party	8,844	8,764	26,653	27,662
Total net sales	30,690	30,999	97,335	90,872
Cost of sales:	'	'	'	'
Cost of sales	12,393	11,922	36,576	34,846
Cost of sales, related party	3,556	4,005	11,619	12,897
Amortization of purchased intangible assets and inventory step-up	1,898	801	5,346	2,578
Warranty reserve	'	'	1,440	'
Restructuring charges and exit costs	100	600	1,500	'
Total cost of sales	17,864	16,807	55,103	50,481
Gross profit	12,826	14,192	42,232	40,391
Operating expenses:	'	'	'	'
Research and development	6,929	5,376	20,263	16,598
Selling, general and administrative	9,086	8,645	26,407	24,066
Net change in fair value of contingent consideration	58	'	-2,437	'
Total operating expenses	16,147	14,545	45,622	42,283
Loss from operations	-3,321	-353	-3,390	-1,892
Other income and expense, net:	'	'	'	'
Interest income and other, net	321	586	980	1,906
Interest expense	-39	-56	-117	-128
Total other income and expense, net	282	530	863	1,778
Income (Loss) before income taxes	-3,039	177	-2,527	-114
Benefit from income taxes	-1,405	-1,346	-8,181	-1,324
Net income (loss)	($1,634)	$1,523	$5,654	$1,210
Net income (loss) per share:	'	'	'	'
Basic (in Dollars per share)	($0.03)	$0.03	$0.12	$0.03
Diluted (in Dollars per share)	($0.03)	$0.03	$0.12	$0.03
Shares used in the computation of net income (loss) per share:	'	'	'	'
Basic (in Shares)	47,529	45,925	47,277	46,228
Diluted (in Shares)	47,529	46,438	48,815	46,623

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Dec. 30, 2012
Net income (loss)	($1,634)	$1,523	$5,654	$1,210
Changes in market value of investments, net of tax:	'	'	'	'
Changes in unrealized gain on investments	-77	-305	-495	-42
Reclassification adjustment for net realized gains (losses)	67	4	41	-149
Net change in market value of investments	-10	-301	-454	-191
Comprehensive income (loss)	($1,644)	$1,222	$5,200	$1,019

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
	Dec. 29, 2013	Dec. 30, 2012
Cash flows from operating activities:	'	'
Net income	$5,654,000	$1,210,000
Depreciation and amortization	9,386,000	8,333,000
Gain on sale of intangible asset	'	-223,000
Stock-based compensation expense	7,267,000	3,010,000
Release of deferred tax asset valuation allowance	-6,770,000	'
Net change in fair value of contingent consideration	-2,437,000	'
Accounts receivable and accounts receivable, related party	-7,155,000	-3,669,000
Inventories	-3,764,000	-346,000
Other current and non-current assets	-558,000	47,000
Accounts payable	4,849,000	2,256,000
Accrued compensation and related benefits	659,000	182,000
Deferred income and allowance on sales to distributors and related party distributor	-1,996,000	-1,848,000
Other current and non-current liabilities	-5,992,000	-5,298,000
Net cash provided by (used in) operating activities	-857,000	3,654,000
Cash flows from investing activities:	'	'
Purchases of property, plant and equipment and intellectual property, net	-1,675,000	-1,253,000
Purchases of short-term marketable securities	-166,738,000	-132,955,000
Proceeds from maturities of short-term marketable securities	24,410,000	37,563,000
Proceeds from sales of short-term marketable securities	178,167,000	97,190,000
Acquisition, net of cash acquired	-23,111,000	'
Other disposal activities	125,000	235,000
Net cash provided by investing activities	11,178,000	780,000
Cash flows from financing activities:	'	'
Proceeds from issuance of common stock	3,971,000	4,699,000
Purchase of stock for withholding taxes on vested restricted stock	-1,042,000	'
Repurchase of common stock	-4,000,000	'
Payments of lease financing obligations	-2,898,000	-2,513,000
Net cash provided by (used in) financing activities	-3,969,000	2,186,000
Net increase in cash and cash equivalents	6,352,000	6,620,000
Cash and cash equivalents at the beginning of period	14,718,000	8,714,000
Cash and cash equivalents at the end of period	21,070,000	15,334,000
Cadeka [Member]	'	'
Cash flows from financing activities:	'	'
Issuance of common stock in connection with Cadeka acquisition	$5,177,000	'

Note_1_Organization_and_Basis_

Note 1 - Organization and Basis Of Presentation	9 Months Ended
	Dec. 29, 2013
Disclosure Text Block [Abstract]	'
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	'
	NOTE 1.    ORGANIZATION AND BASIS OF PRESENTATION
	Description of Business— Exar Corporation was incorporated in California in 1971 and reincorporated in Delaware in 1991. Exar Corporation and its subsidiaries (“Exar” or “we”) is a fabless semiconductor company that designs, develops and markets high performance analog mixed-signal integrated circuits and advanced sub-system solutions for the Networking & Storage, Industrial & Embedded, and Communications Infrastructure markets. Exar's product portfolio includes power management and connectivity components, high-performance analog and mixed-signal products, communications products and data compression and storage solutions.
	Basis of Presentation and Use of Management Estimates—The accompanying condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements and should be read in conjunction with the financial statements and notes thereto included in our Annual Report on Form 10-K for the fiscal year ended March 31, 2013 as filed with the SEC. In the opinion of management, the accompanying condensed consolidated financial statements contain all adjustments, consisting only of normal recurring adjustments, that we believe are necessary for a fair statement of Exar’s financial position as of December 29, 2013 and results of operations for the three and nine months ended December 29, 2013 and December 30, 2012, respectively. These condensed consolidated financial statements are not necessarily indicative of the results to be expected for the entire year.
	The financial statements include management’s estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the financial statements and the reported amounts of sales and expenses during the reporting periods. Actual results could differ from those estimates, and material effects on operating results and financial position may result.
	Our fiscal years consist of 52 or 53 weeks. In a 52-week year, each fiscal quarter consists of 13 weeks. Fiscal years 2014 and 2013 consisted of 52 weeks. The third quarter of fiscal years 2014 and 2013 both consisted of 13 weeks.

Note_2_Recent_Accounting_Prono

Note 2 - Recent Accounting Pronouncements	9 Months Ended
	Dec. 29, 2013
Policy Text Block [Abstract]	'
New Accounting Pronouncements, Policy [Policy Text Block]	'
	NOTE 2.    RECENT ACCOUNTING PRONOUNCEMENTS
	In July 2013, the Financial Accounting Standards Board (“FASB”) issued amended standards that provided explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward or a tax credit carryforward exists. Under the amended standards, the unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward or a tax credit carryforward. These amended standard updates will be effective for our interim period beginning after December 15, 2013 and applied prospectively with early adoption permitted. We are currently evaluating the impact of this guidance on the presentation of our financial positions, results of operations and cash flows.
	In February 2013, the FASB issued amended standards to improve the reporting of reclassifications out of accumulated other comprehensive income by requiring an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under U.S. GAAP to be reclassified to net income in its entirety in the same reporting period. For other amounts that are not required under U.S. GAAP to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures required under U.S. GAAP that provide additional detail about those amounts. These amended standards are effective for interim and annual reporting periods beginning after December 15, 2012. The adoption of this guidance did not have any material impact on our financial position, results of operations or cash flows.

Note_3_Business_Combinations

Note 3 - Business Combinations	9 Months Ended
	Dec. 29, 2013
Business Combinations [Abstract]	'
Business Combination Disclosure [Text Block]	'
	NOTE 3.    BUSINESS COMBINATIONS
	We periodically evaluate potential strategic acquisitions or arrangements to broaden our product offering and build upon our existing library of intellectual property, human capital and engineering talent in order to expand our capabilities in the areas in which we operate or to acquire complementary businesses.
	We account for each business combination by applying the acquisition method, which requires (1) identifying the acquiree; (2) determining the acquisition date; (3) recognizing and measuring the identifiable assets acquired, the liabilities assumed, and any noncontrolling interest we have in the acquiree at their acquisition date fair value; and (4) recognizing and measuring goodwill or a gain from a bargain purchase.
	Assets acquired and liabilities assumed in a business combination that arise from contingencies are recognized at fair value on the acquisition date if fair value can be determined during the measurement period. If fair value cannot be determined, we typically account for the acquired contingencies using existing guidance for a reasonable estimate.
	To establish fair value, we measure the price that would be received to sell an asset or paid to transfer a liability in an ordinary transaction between market participants. The measurement assumes the highest and best use of the asset by the market participants that would maximize the value of the asset or the group of assets within which the asset would be used at the measurement date, even if the intended use of the asset is different.
	Acquisition related costs, including finder’s fees, advisory, legal, accounting, valuation and other professional or consulting fees are accounted for as expenses in the periods in which the costs are incurred and the services are received, with the exception that the costs to issue debt or equity securities are recognized in accordance with other applicable GAAP.
	Acquisition of Cadeka
	On July 5, 2013, we completed the acquisition of substantially all of the assets of Cadeka Technologies (Cayman) Holding Ltd., a privately held company organized under the laws of the Cayman Islands and all the outstanding stock of the subsidiaries of Cadeka, including the equity of its wholly owned subsidiary Cadeka Microcircuits, LLC, a Colorado limited liability company (“Cadeka”). With locations in Loveland, Colorado, Shenzhen and Wuxi, China, Cadeka designs, develops and markets high precision analog integrated circuits for use in industrial and high reliability applications. Cadeka’s results of operations and estimated fair value of assets acquired and liabilities assumed were included in our condensed consolidated financial statements beginning July 6, 2013. The pro forma effects of the portion of the Cadeka operations assumed through the transaction on our results of operations during fiscal years 2014 and 2013 were considered immaterial.
	Consideration
	The purchase consideration includes approximately 454,000 shares of our common stock issued to the shareholders of Cadeka (valued at $5.2 million) and a cash payment of $25.0 million (less an amount of $1.0 million, inclusive of 15,000 shares, held back temporarily to satisfy potential indemnity claims). An additional purchase price consideration earn-out (up to $5.0 million) may be earned over the next two fiscal years contingent upon achieving certain revenue targets, and may be paid in the form of cash, stock or both. The $5.2 million worth of shares issued at closing were valued on the date of the acquisition, and the fair value of contingent earn-outs was derived using a probability-based approach on various revenue assumptions and discounted to a present value. Final determination of the earn-out liability can range from zero to $5.0 million based on the actual achievement of the revenue targets. Fair value of contingent consideration is subject to periodic revaluation and any change in the fair value of contingent consideration from the events after the acquisition date will be recognized in earnings of the period in which the fair value changes. The probability–based approach used to fair value contingent consideration is based on significant inputs not observed in the market and thus represents a Level 3 measurement. The significant unobservable inputs include projected revenues, percentage probability of occurrence and a discount rate to present value the future payments. The summary of the preliminary purchase consideration is as follows (in thousands):
		Amount
	Cash	$	25,000
	Equity instruments		5,177
	Estimated fair value of earn-out payments		4,660
	Total consideration paid	$	34,837
	In accordance with ASC 805, Business Combinations, the acquisition of Cadeka was recorded as a purchase business acquisition since Cadeka was considered a business. Under the purchase method of accounting, the fair value of the consideration was allocated to net assets acquired at their fair values. The fair value of purchased identifiable intangible assets and contingent earn-outs were derived from model-based valuations from significant unobservable inputs (“Level 3 inputs”) determined by management. The fair value of purchased identifiable intangible assets was determined using discounted cash flow models from operating projections prepared by management using an internal rate of return ranging from 15% to 23%. The fair value of the contingent earn-out was a probability-based approach that includes significant Level 3 inputs. See Note 4 —“Fair Value,” for additional details of the inputs used to determine the fair value of the contingent earn-out. The excess of the preliminary fair value of consideration paid over the preliminary fair values of net assets acquired and identifiable intangible assets resulted in recognition of goodwill of approximately $12.4 million prior to considering the impact on deferred tax assets and liabilities. The goodwill results largely of expected synergies from combining the operations of Cadeka with that of Exar and is not expected to be tax deductible. After considering the impact of deductible and taxable temporary tax differences on the acquired business, a deferred tax liability of $6.8 million was established primarily related to identified intangible asset basis differences, which resulted in a total goodwill amount recorded as part of the acquisition of $19.2 million. Additionally, in accordance with ASC 805, Business Combinations, we also evaluated the impact of the acquisition on Exar’s valuation allowance, the impact of which is recorded outside of purchase accounting, resulting in a release of the valuation allowance and an income tax benefit of $6.8 million.
	Preliminary Purchase Price Allocation
	The allocation of the total preliminary purchase price to Cadeka’s tangible and identifiable intangible assets and liabilities assumed was based on their estimated fair values at the date of acquisition.
	The preliminary fair value allocated to each of the major classes of tangible and identifiable intangible assets acquired and liabilities assumed in the Cadeka acquisition was as follows (in thousands):
		Amount
	Identifiable tangible assets (liabilities)
	Cash	$	1,055
	Accounts Receivable		241
	Inventories		1,756
	Property, plant and equipment		231
	Other assets		3
	Accounts payable and accruals		(7,400	)
	Other short-term liabilities		(520	)
	Long-term liabilities		(126	)
	Total identifiable tangible assets (liabilities), net		(4,760	)
	Identifiable intangible assets		20,380
	Total identifiable assets, net		15,620
	Goodwill		19,217
	Fair value of total consideration transferred	$	34,837
	The following table sets forth the components of identifiable intangible assets acquired in connection with the Cadeka acquisition (in thousands):
		Fair Value
	Developed technologies	$	15,720
	In-process research and development		2,280
	Customer relations		2,170
	Trade name		210
	Total identifiable intangible assets	$	20,380
	In valuing specific components of the acquisition, that includes deferred taxes, and intangibles required us to make estimates that may be adjusted in the future, if new information is obtained about circumstances that existed as of the acquisition date that, if known, would have resulted in the recognition of those assets and liabilities as of that date. Thus, the purchase price allocation is considered preliminary and dependent upon the finalization of the valuation of assets acquired and liabilities assumed, including income tax effects. Final determination of these estimates could result in an adjustment to the preliminary purchase price allocation, with an offsetting adjustment to goodwill.
	Acquisition Related Costs
	Acquisition related costs, or deal costs, relating to Cadeka are included in the selling, general and administrative line on the condensed consolidated statement of operations for the nine months ended December 29, 2013 were approximately $0.4 million.
	Acquisition of Altior
	On March 22, 2013, we completed the acquisition of substantially all of the assets of Altior Inc. (“Altior”), a developer of data management solutions in Eatontown, New Jersey. Altior’s results of operations and estimated fair value of assets acquired and liabilities assumed were included in our consolidated financial statements beginning March 23, 2013. The pro forma effects of the portion of the Altior operations assumed through the transaction on our results of operations during fiscal years 2013 and 2012 were considered immaterial.
	Consideration
	The purchase consideration included approximately 358,000 of our shares issued to the shareholders of Altior, a cash payment of $1.0 million (of which $0.25 million was held back temporarily to satisfy potential indemnity claims), and additional purchase price consideration earn-outs which may be paid in the form of cash, shares or a combination thereof (not to exceed $20.0 million in aggregate) payable over the next three fiscal years contingent upon achieving certain revenue targets. The $3.7 million worth of shares issued as consideration were valued on the date of the acquisition, and the fair value of contingent earn-outs was derived using a probability-based approach on various revenue assumptions. Final determination of the earn-out liability can range from zero to $20.0 million based on the actual achievement of the revenue targets. Fair value of contingent consideration is subject to periodic revaluation and any change in the fair value of contingent consideration from the events after the acquisition date, will be recognized in earnings of the period in which the fair value changes. The probability–based approach used to fair value contingent consideration is based on significant inputs not observed in the market and thus represents a Level 3 measurement. The significant unobservable inputs include projected revenues, percentage probability of occurrence and a discount rate to present value the future payments. The summary of the purchase consideration is as follows (in thousands):
		Amount
	Cash	$	1,000
	Equity instruments		3,740
	Estimated fair value of earn-out payments		10,138
	Total consideration paid	$	14,878
	In accordance with ASC 805, Business Combinations, the acquisition of Altior was recorded as a purchase business acquisition since Altior was considered a business. Under the purchase method of accounting, the fair value of the consideration was allocated to assets and liabilities assumed at their fair values. The fair value of purchased identifiable intangible assets and contingent earn-outs were derived from model-based valuations from significant Level 3 inputs determined by management. The fair value of purchased identifiable intangible assets was determined using discounted cash flow models from operating projections prepared by management using an internal rate of return ranging from 12% to 19%. The fair value of the contingent earn-outs was a probability-based approach that includes significant Level 3 inputs. See Note 4 —“Fair Value,” for additional details of the inputs used to determine the fair value of the contingent earn-out. The excess of the fair value of consideration paid over the fair values of net assets and liabilities acquired and identifiable intangible assets resulted in recognition of goodwill of approximately $7.2 million. The goodwill consists largely of expected synergies from combining the operations of Altior with that of Exar and is deductible over 15 years for tax purposes.
	Purchase Price Allocation
	The allocation of the purchase price to Altior’s tangible and identifiable intangible assets and liabilities assumed was based on their estimated fair values at the date of acquisition.
	The fair value allocated to each of the major classes of tangible and identifiable intangible assets acquired and liabilities assumed in the Altior acquisition was as follows (in thousands):
		Amount
	Identifiable tangible assets
	Inventories	$	126
	Property, plant and equipment		140
	Other assets		36
	Accounts payable and accruals		(24	)
Other short-term liabilities		(51	)
Long-term liabilities		(61	)
Total identifiable tangible assets, net		166
Identifiable intangible assets – existing technology		7,540
Total identifiable assets, net		7,706
Goodwill		7,172
Fair value of total consideration transferred	$	14,878
Acquisition Related Costs
Acquisition related costs, or deal costs, relating to Altior are included in the selling, general and administrative line on the consolidated statement of operations for fiscal year 2013, which were immaterial.

Note_4_Fair_Value

Note 4 - Fair Value	9 Months Ended
	Dec. 29, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Disclosures [Text Block]	'
	NOTE 4.    FAIR VALUE
	Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. GAAP describes a fair value hierarchy based on three levels of inputs, of which the first two are considered observable and the last unobservable, that may be used to measure fair value as follows:
	Level 1 – Quoted prices in active markets for identical assets or liabilities.
	Level 2 – Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
	Level 3 – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
	Our cash and investment instruments are classified within Level 1 or Level 2 of the fair value hierarchy because they are valued using quoted market prices, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency.
	The fair value of contingent consideration arising from the acquisitions of Altior and Cadeka is classified within Level 3 of the fair value hierarchy since it is based on a probability-based approach that includes significant unobservable inputs.
	There were no transfers between Level 1, Level 2, and Level 3 during the fiscal quarter ended December 29, 2013.
	Our investment assets, measured at fair value on a recurring basis, as of the dates indicated below were as follows (in thousands, except for percentages):
			29-Dec-13
			Level 1				Level 2			Level 3			Total
	Assets:
	Money market funds		$	13,961			$	—		$	—		$	13,961
	U.S. government and agency securities			11,537				21,254			—			32,791
	State and local government securities			—				2,798			—			2,798
	Corporate bonds and securities			4				72,721			—			72,725
	Asset-backed securities			—				30,354			—			30,354
	Mortgage-backed securities			—				16,034			—			16,034
	Total investment assets		$	25,502			$	143,161		$	—		$	168,663
	Liabilities:
	Acquisition-related contingent consideration – Altior		$	—			$	—		$	7,741		$	7,741
	Acquisition-related contingent consideration – Cadeka		$	—			$	—		$	4,620		$	4,620
	Total liabilities		$	—			$	—		$	12,361		$	12,361
			31-Mar-13
			Level 1				Level 2			Level 3			Total
	Assets:
	Money market funds		$	5,042			$	—		$	—		$	5,042
	U.S. government and agency securities			22,460				19,261			—			41,721
	State and local government securities			—				2,935			—			2,935
	Corporate bonds and securities			274				91,955			—			92,229
	Asset-backed securities			—				30,966			—			30,966
	Mortgage-backed securities			—				22,736			—			22,736
	Total investment assets		$	27,776			$	167,853		$	—		$	195,629
	Liabilities:
	Acquisition-related contingent consideration – Altior		$	—			$	—		$	10,138		$	10,138
	The fair value of contingent consideration was determined based on a probability-based approach which includes projected revenues, percentage probability of occurrence and discount rate to present value payments. A significant increase (decrease) in the projected revenue, discount rate or probability of occurrence in isolation could result in a significantly higher (lower) fair value measurement.
	The following table presents quantitative information about the inputs and valuation methodologies used for our fair value measurements classified in Level 3 of the fair value hierarchy as of December 29, 2013.
			Fair Value			Valuation		Significant
			(in thousands)			Technique		Unobservable Input
	As of December 29, 2013
	Acquisition-related contingent consideration – Altior		$	7,741		Combination of income and marketable approach		Revenue and Probability of Achievement
	Acquisition-related contingent consideration – Cadeka		$	4,620		Combination of income and marketable approach		Revenue and Probability of Achievement
	We calculate the fair value of the contingent consideration on a quarterly basis based on additional information as it becomes available. Any change in the fair value adjustment is recorded in the earnings of that period.
	The change in the fair value of our Altior purchase consideration liability is as follows (in thousands):
			December 29,
			2013
	As of March 31, 2013		$	10,138
	Less: Adjustment to purchase consideration			(2,397	)
	As of December 29, 2013		$	7,741
	The change in the fair value of our Cadeka purchase consideration liability is as follows (in thousands):
			December 29,
			2013
	As of March 31, 2013		$	—
	Purchase contingent consideration			4,660
	Less: Adjustment to purchase consideration			(40	)
	As of December 29, 2013		$	4,620
	We have focused our resources on developing and marketing our coprocessor products with the Altior software technology incorporated. These products, when compared to the Altior legacy FPGA-based products, will earn credit under the asset purchase agreement at a lower rate, resulting in a lower probability of meeting certain near-term earn-out targets. As a result, the fair value of the contingent consideration for Altior acquisition was reduced by $2.5 million and credited to operating expense in the three months ended September 29, 2013. In the third quarter of fiscal year 2014, the fair value of the contingent consideration was increased by $98,000 related to present value of the amount payable due to passage of time.
	In the third quarter of fiscal year 2014 the fair value of the contingent consideration for the Cadeka was decreased by $40,000 related to changes in probability of achieving revenue targets and impact of change in present value of the amount payable due to passage of time.
	Our cash, cash equivalents and short-term marketable securities as of the dates indicated below were as follows (in thousands):
			December29,				March 31,
			2013				2013
	Cash and cash equivalents
	Cash at financial institutions		$	7,109			$	9,676
Cash equivalents
Money market funds			13,961				5,042
Total cash and cash equivalents		$	21,070			$	14,718
Available-for-sale securities
U.S. government and agency securities		$	32,791			$	41,721
State and local government securities			2,798				2,935
Corporate bonds and securities			72,725				92,229
Asset-backed securities			30,354				30,966
Mortgage-backed securities			16,034				22,736
Total short-term marketable securities		$	154,702			$	190,587
Our marketable securities include U.S. government and agency securities, state and local government securities, corporate bonds and securities, and asset-backed and mortgage-backed securities. We classify investments as available-for-sale at the time of purchase and re-evaluate such designation as of each balance sheet date. We amortize premiums and accrete discounts to interest income over the life of the investment. Our available-for-sale securities, which we intend to sell as necessary to meet our liquidity requirements, are classified as cash equivalents if the maturity date is 90 days or less from the date of purchase and as short-term marketable securities if the maturity date is greater than 90 days from the date of purchase.
All marketable securities are reported at fair value based on the estimated or quoted market prices as of each balance sheet date, with unrealized gains or losses, net of tax effect, recorded in the condensed consolidated statements of comprehensive income (loss) except those unrealized losses that are deemed to be other than temporary which are reflected in the impairment charges on investments line item on the condensed consolidated statements of operations. There have been no such impairment charges in any of the periods presented.
Realized gains (losses) on the sale of marketable securities are determined by the specific identification method and are reflected in the interest income and other net, line item on the condensed consolidated statements of operations.
Our net realized gains (losses) on marketable securities for the periods indicated below were as follows (in thousands):
		Three Months Ended							Nine Months Ended
		December 29,				December 30,			December 29,			December 30,
		2013				2012			2013			2012
Gross realized gains		$	136			$	233		$	518		$	617
Gross realized losses			(69	)			(229	)		(477	)		(766	)
Net realized income (losses)		$	67			$	4		$	41		$	(149	)
The following table summarizes our investments in marketable securities as of the dates indicated below (in thousands):
		29-Dec-13
		Amortized				Unrealized			Unrealized			Fair
		Cost				Gross			Gross			Value
						Gains (1)			Losses (1)
Money market funds		$	13,961			$	—		$	—		$	13,961
U.S. government and agency securities			32,840				1			(50	)		32,791
State and local government securities			2,797				5			(4	)		2,798
Corporate bonds and securities			72,730				60			(65	)		72,725
Asset-backed securities			30,396				14			(56	)		30,354
Mortgage-backed securities			16,064				19			(49	)		16,034
Total investments		$	168,788			$	99		$	(224	)	$	168,663
		31-Mar-13
		Amortized				Unrealized			Unrealized			Fair
		Cost				Gross			Gross			Value
						Gains (1)			Losses (1)
Money market funds		$	5,042			$	—		$	—		$	5,042
U.S. government and agency securities			41,694				27			—			41,721
State and local government securities			2,927				10			(2	)		2,935
Corporate bonds and securities			92,059				215			(45	)		92,229
Asset-backed securities			30,932				61			(27	)		30,966
Mortgage-backed securities			22,646				194			(104	)		22,736
Total investments		$	195,300			$	507		$	(178	)	$	195,629
	-1	Gross of tax impact
Our asset-backed securities are comprised primarily of premium tranches of vehicle loans and credit card receivables, while our mortgage-backed securities are primarily from Federal agencies. We do not own auction rate securities nor do we own securities that are classified as subprime. As of December 29, 2013, we have sufficient liquidity and do not intend to sell these securities to fund normal operations or realize any significant losses in the short term; however, these securities are available for use, if needed, for current operations.
Management determines the appropriate classification of cash equivalents or short-term marketable securities at the time of purchase and reevaluates such classification as of each balance sheet date. The investments are adjusted for amortization of premiums and accretion of discounts to maturity and such accretion/amortization, which is immaterial for all periods presented, is included in the interest income and other, net line in the condensed consolidated statements of operations. Cash equivalents and short-term marketable securities are reported at fair value with the related unrealized gains and losses included in the accumulated other comprehensive losses line in the condensed consolidated balance sheets.
We periodically review our investments in unrealized loss positions for other-than-temporary impairments. This evaluation includes, but is not limited to, significant quantitative and qualitative assessments and estimates regarding credit ratings, collateralized support, the length of time and significance of a security’s loss position, our intent not to sell the security, and whether it is more likely than not that we will not have to sell the security before recovery of its cost basis. For the three and nine months ended December 29, 2013 and December 30, 2012, respectively, there were no investments identified with other than temporary declines in value.
The amortized cost and estimated fair value of cash equivalents and marketable securities classified as available-for-sale by expected maturity as of the dates indicated below were as follows (in thousands):
		29-Dec-13							31-Mar-13
		Amortized				Fair Value			Amortized			Fair Value
		Cost							Cost
Less than 1 year		$	61,616			$	61,615		$	61,011		$	61,029
Due in 1 to 5 years			107,172				107,048			134,289			134,600
Total		$	168,788			$	168,663		$	195,300		$	195,629
The following table summarizes the gross unrealized losses and fair values of our investments in an unrealized loss position as of the dates indicated below, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (in thousands):
		29-Dec-13
		Less than 12 months							12 months or greater						Total
		Fair Value				Gross			Fair Value			Gross			Fair Value		Gross
						Unrealized						Unrealized					Unrealized
						Losses						Losses					Losses
U.S. government and agency securities		$	28,772			$	(50	)	$	—		$	—		$	28,772	$	(50	)
State and local government securities			1,516				(4	)		—			—			1,516		(4	)
Corporate bonds and securities			35,179				(65	)		—			—			35,179		(65	)
Asset-backed securities			15,301				(25	)		3,467			(31	)		18,768		(56	)
Mortgage-backed securities			8,249				(22	)		2,174			(27	)		10,423		(49	)
Total		$	89,017			$	(166	)	$	5,641		$	(58	)	$	94,658	$	(224	)
		31-Mar-13
		Less than 12 months							12 months or greater						Total
		Fair Value				Gross			Fair Value			Gross			Fair Value		Gross
						Unrealized						Unrealized					Unrealized
						Losses						Losses					Losses
State and local government securities		$	—			$	—		$	404		$	(2	)	$	404	$	(2	)
Corporate bonds and securities			29,609				(42	)		497			(3	)		30,106		(45	)
Asset-backed securities			10,008				(17	)		1,241			(10	)		11,249		(27	)
Mortgage-backed securities			2,911				(39	)		3,263			(65	)		6,174		(104	)
Total		$	42,528			$	(98	)	$	5,405		$	(80	)	$	47,933	$	(178	)

Note_5_Goodwill_and_Intangible

Note 5 - Goodwill and Intangible Assets	9 Months Ended
	Dec. 29, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets Disclosure [Text Block]	'
	NOTE 5.    GOODWILL AND INTANGIBLE ASSETS
	Goodwill
	Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in a business combination. We evaluate goodwill for impairment on an annual basis or whenever events and changes in circumstances suggest that the carrying amount may not be recoverable. We conduct our annual impairment analysis in the fourth quarter of each fiscal year. Impairment of goodwill is tested at the reporting unit level by comparing the reporting unit’s carrying amount, including goodwill, to the fair value of the reporting unit. Estimations and assumptions regarding the number of reporting units, future performances, results of our operations and comparability of our market capitalization and net book value will be used. If the carrying amount of the reporting unit exceeds its fair value, goodwill is considered impaired and a second step is performed to measure the amount of impairment loss. Because we have one reporting unit, we utilize an entity-wide approach to assess goodwill for impairment. As of December 29, 2013, no events or changes in circumstances suggest that the carrying amount for goodwill may not be recoverable and therefore we did not perform an interim goodwill impairment analysis.
	The changes in the carrying amount of goodwill for fiscal years 2014 and 2013 were as follows (in thousands):
		December 29,		March 31,
		2013		2013
	Beginning balance	$	10,356	$	3,184
	Goodwill additions		19,217		7,172
	Ending balance	$	29,573	$	10,356
	The goodwill additions during the nine months ended December 29, 2013 consist of $19.2 million residual allocation from the Cadeka acquisition purchase price accounting. Goodwill additions during the fiscal year ended March 31, 2013 consisted of $7.2 million residual allocation from the Altior acquisition purchase price accounting.
	Intangible Assets
	Our purchased intangible assets as of the dates indicated below were as follows (in thousands):
		29-Dec-13							31-Mar-13
				Accumulated			Net		Carrying		Accumulated			Net
		Carrying		Amortization			Carrying		Amount		Amortization			Carrying
		Amount					Amount							Amount
	Amortized intangible assets:
	Existing technology	$	58,588	$	(35,647	)	$	22,941	$	42,858	$	(30,668	)	$	12,190
	Customer relationships		5,075		(2,539	)		2,536		2,905		(2,079	)		826
	Patents/Core technology		3,459		(3,328	)		131		3,459		(3,182	)		277
	Distributor relationships		1,264		(1,264	)		—		1,264		(1,219	)		45
	Tradenames		210		(35	)		175		—		—			—
	Total intangible assets subject to amortization		68,596		(42,813	)		25,783		50,486		(37,148	)		13,338
	In-process research and development		2,280		—			2,280		—		—			—
	Total	$	70,876	$	(42,813	)	$	28,063	$	50,486	$	(37,148	)	$	13,338
	Long-lived assets are amortized on a straight-line basis over their respective estimated useful lives. Existing technology is amortized over two to nine years. Patents/core technology is amortized over five to six years. Distributor relationships are amortized over six years. Customer relationships are amortized over five to seven years. Tradenames are amortized over three years. We expect the amortization of in-process research and development to start in fiscal year 2015. We evaluate the remaining useful life of our long-lived assets that are being amortized each reporting period to determine whether events and circumstances warrant a revision to the remaining period of amortization. If the estimate of an intangible asset’s remaining useful life is changed, the remaining carrying amount of the long-lived asset is amortized prospectively over the remaining useful life. Long-lived assets are evaluated for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If an indicator of impairment exists, we compare the carrying value of long-lived assets to our projection of future undiscounted cash flows attributable to such assets and, in the event that the carrying value exceeds the future undiscounted cash flows, we record an impairment charge equal to the excess of the carrying value over the asset’s fair value. Although the assumptions used in projecting future revenues and gross margins are consistent with those used in our annual strategic planning process, intangible asset impairment charges might be required in future periods if our assumptions are not achieved.
	As December 29, 2013, there were no indicators that required us to perform an intangible assets impairment review.
	The aggregate amortization expenses for our purchased intangible assets for the periods indicated below were as follows (in thousands):
		Three Months Ended					Nine Months Ended
		December 29,		December 30,			December 29,		December 30,
		2013		2012			2013		2012
	Amortization expense	$	1,991	$	994		$	5,665	$	3,155
	The total future amortization expenses for our purchased intangible assets are summarized below (in thousands):
	Amortization Expense (by fiscal year)
	2014 (3 months remaining)	$	1,991
	2015		6,039
	2016		4,863
	2017		3,449
	2018		3,255
	2019 and thereafter		6,186
	Total future amortization	$	25,783

Note_6_LongTerm_Investment

Note 6 - Long-Term Investment	9 Months Ended
	Dec. 29, 2013
Investments Schedule [Abstract]	'
Investment [Text Block]	'
	NOTE 6.    LONG-TERM INVESTMENT
	Our long-term investment consists of our investment in Skypoint Telecom Fund II (US), L.P. (“Skypoint Fund”). Skypoint Fund is a venture capital fund that invested primarily in private companies in the telecommunications and/or networking industries. We account for this non-marketable equity investment under the cost method. We periodically review and determine whether the investment is other-than-temporarily impaired, in which case the investment is written down to its impaired value.
	As of the dates indicated below, our long-term investment balance, which is included in the “Other non-current assets” line item on the condensed consolidated balance sheets, consisted of the following (in thousands):
		December29,			March 31,
		2013			2013
	Beginning balance	$	1,288		$	1,273
	Contributions		—			15
	Distributions		(25	)		—
	Ending balance	$	1,263		$	1,288
	The carrying amount of $1.3 million as of December 29, 2013 reflects the net of the capital contributions, capital distributions and cumulative impairment charges. We have made $4.8 million in capital contributions to Skypoint Fund since we became a limited partner in July 2001. During the first quarter of fiscal year 2013, we contributed $15,000 to the fund.
	In the three months ended December 29, 2013, Skypoint Fund informed us of the sale of one of the portfolio companies in the fund. Exar’s distribution from the sale was approximately $25,000. In accordance with the standard related to accounting for cost method investments, we recorded the distribution on the cost basis and reduced the carrying value of our investment in the Skypoint Fund.
	The Partnership is currently in the dissolution phase. As of December 29, 2013, we do not have any further capital commitments.
	Impairment
	We evaluate our long-term investment for impairment whenever events and changes in circumstances suggest that the carrying amount may not be recoverable. We conduct our annual impairment analysis in the fourth quarter of each fiscal year by comparing the carrying amount to the fair value of the underlying investments. If the carrying amount exceeds its fair value, the long term-investment is considered impaired and a second step is performed to measure the amount of impairment loss. We analyzed the fair value of the underlying investments of Skypoint Fund and as a result, no impairment was recorded during the third fiscal quarter of 2014.

Note_7_Related_Party_Transacti

Note 7 - Related Party Transaction	9 Months Ended
	Dec. 29, 2013
Related Party Transactions [Abstract]	'
Related Party Transactions Disclosure [Text Block]	'
	NOTE 7.    RELATED PARTY TRANSACTIONS
	Alonim Investments Inc. (“Alonim”), owns approximately 7.6 million shares, or approximately 16%, of our outstanding common stock as of December 29, 2013. As such, Alonim is our largest stockholder and any sales made to Alonim or its affiliates are considered related party transactions.
	Related party contributions to our total net sales for the periods indicated below were as follows:
		Three Months Ended				Nine Months Ended
		December 29,		December 30,		December 29,		December 30,
		2013		2012		2013		2012
	Alonim		29%		28%		27%		30%
	Related party receivables to our net accounts receivables were as follows as of the dates indicated below:
		December29,		March 31,
		2013		2013
	Alonim		*		21%
	*     Related party receivables for this period were less than 10% of the net account balance.
	Related party expenses for marketing promotional materials reimbursed were not significant for the three and nine months ended December 29, 2013 and December 30, 2012, respectively.
	We rent our Loveland, Colorado office from an entity, which is partially-owned by one of the founders of Cadeka, who is now one of our employees. We have recorded $34,000 and $103,000 in related party rent expense for the three and nine months ended December 29, 2013, respectively.

Note_8_Restructuring_Charges_a

Note 8 - Restructuring Charges and Exit Costs	9 Months Ended
	Dec. 29, 2013
Restructuring and Related Activities [Abstract]	'
Restructuring and Related Activities Disclosure [Text Block]	'
	NOTE 8.    RESTRUCTURING CHARGES AND EXIT COSTS
	2014 Restructuring Charges and Exit Costs
	During the three and nine months ended December 29, 2013, we incurred restructuring charges and exit costs of $0.1 million and $1.5 million, respectively. The charges include $1.4 million of severance benefits and $0.2 million of lease termination and other costs. In the fourth quarter of fiscal 2014 we have started to implement an additional restructuring in order to reduce costs. The total charges from this restructuring have not yet been determined.
	2013 Restructuring Charges and Exit Costs
	In the fourth quarter of fiscal year 2013, we recorded $0.3 million restructuring charges and exit costs and released a $0.5 million liability related to Industrial Research Assistance Program with Canadian governmental agency. In the third, second and first quarters of fiscal year 2013, we recorded restructuring charges and exit costs of $0.6 million, $0.3 million and $0.9 million, respectively. Of the total restructuring charges and exit costs recorded in fiscal year 2013, $0.3 million was reflected in cost of sales and $1.3 million was reflected in operating expenses within our consolidated statements of operations.
	Our restructuring liabilities were included in the accounts payable, other current liabilities and other non-current obligations lines within our condensed consolidated balance sheets. The following table summarizes the activities affecting the liabilities as of the dates indicated below (in thousands):
		29-Dec-13
		Beginning		Additions/		Non-cash			Payments			Ending
		balance		adjustments		charges						balance
	Lease termination and other costs	$	2,860	$	158	$	(4	)	$	(1,581	)	$	1,433
	Severance		426		1,353		—			(1,205	)		574
	Balance at December 29, 2013	$	3,286	$	1,511	$	(4	)	$	(2,786	)	$	2,007
		31-Mar-13
		Beginning		Additions/		Non-cash			Payments			Ending
		balance		adjustments		charges						balance
	Lease termination costs and others	$	5,235	$	6	$	(56	)	$	(2,325	)	$	2,860
	Severance		2,806		1,548		—			(3,928	)		426
	Balance at March 31, 2013	$	8,041	$	1,554	$	(56	)	$	(6,253	)	$	3,286

Note_9_Balance_Sheet_Detail

Note 9 - Balance Sheet Detail	9 Months Ended
	Dec. 29, 2013
Disclosure Text Block Supplement [Abstract]	'
Supplemental Balance Sheet Disclosures [Text Block]	'
	NOTE 9.    BALANCE SHEET DETAIL
	Our inventories consisted of the following as of the dates indicated below (in thousands):
		December29,			March 31,
		2013			2013
	Work-in-process and raw materials	$	14,454		$	9,981
	Finished goods		10,496			9,449
	Total inventories	$	24,950		$	19,430
	Our property, plant and equipment consisted of the following as of the dates indicated below (in thousands):
		December29,			March 31,
		2013			2013
	Land	$	—		$	6,660
	Building		860			16,224
	Machinery and equipment		40,736			42,258
	Software and licenses		17,377			17,566
	Property, plant and equipment, total		58,973			82,708
	Accumulated depreciation and amortization		(50,189	)		(58,608	)
	Total property, plant and equipment, net	$	8,784		$	24,100
	Our other current liabilities consisted of the following as of the dates indicated below (in thousands):
		December29,			March 31,
		2013			2013
	Fair value of earn-out liability – short-term	$	2,230		$	2,599
	Accrued restructuring charges and exit costs		1,957			2,020
	Short-term lease financing obligations		1,700			3,189
	Accrued manufacturing expenses, royalties and licenses		1,669			2,370
	Purchase consideration holdback		1,256			250
	Accrued legal and professional services		866			746
	Accrued sales and marketing expenses		573			576
	Accrual for dispute resolution		—			2,727
	Other		900			738
	Total other current liabilities	$	11,151		$	15,215
	Our other non-current obligations consisted of the following (in thousands) as of the dates indicated:
		December29,			March 31,
		2013			2013
	Fair value of earn-out liability – long–term	$	10,131		$	7,539
	Long-term taxes payable		749			2,225
	Accrued restructuring charges and exit costs		14			1,266
	Other		636			174
	Total other non-current obligations	$	11,530		$	11,204

Note_10_Net_Income_Loss_Per_Sh

Note 10 - Net Income (Loss) Per Share	9 Months Ended
	Dec. 29, 2013
Earnings Per Share [Abstract]	'
Earnings Per Share [Text Block]	'
	NOTE 10.    NET INCOME (LOSS) PER SHARE
	Basic net income (loss) per share excludes dilution and is computed by dividing net income (loss) by the weighted average number of common shares outstanding for the applicable period. Diluted earnings per share reflects the potential dilution that would occur if outstanding stock options or warrants to purchase common stock were exercised for common stock, using the treasury stock method, and the common stock underlying outstanding restricted stock units (“RSUs”) was issued.
	The following table summarizes our net income (loss) per share for the periods indicated below (in thousands, except per share amounts):
		Three Months Ended					Nine Months Ended
		December29,			December30,		December29,		December30,
		2013			2012		2013		2012
	Net income (loss)	$	(1,634	)	$	1,523	$	5,654	$	1,210
	Shares used in computation of net income (loss) per share:
	Basic		47,529			45,925		47,277		46,228
	Effect of options and awards		—			513		1,538		395
	Diluted		47,529			46,438		48,815		46,623
	Net income (loss) per share
	Basic	$	(0.03	)	$	0.03	$	0.12	$	0.03
	Diluted	$	(0.03	)	$	0.03	$	0.12	$	0.03
	All outstanding stock options and restricted stock units (“RSUs”) are potentially dilutive securities. In the three months ended December 29, 2013, all shares attributable to outstanding options and RSUs were excluded from the computation of diluted net loss per share, as inclusion of such shares would have an anti-dilutive effect. In the nine months ended December 29, 2013, approximately 1.1 million shares were excluded from the computation of diluted net income per share because they were determined to be anti-dilutive.
	In the three and nine months ended December 30, 2012, approximately 3.2 million shares and 3.8 million shares, respectively, were excluded from the computation of diluted net income per share because they were determined to be anti-dilutive.

Note_11_Common_Stock_Repurchas

Note 11 - Common Stock Repurchases	9 Months Ended
	Dec. 29, 2013
Stockholders' Equity Note [Abstract]	'
Stockholders' Equity Note Disclosure [Text Block]	'
	NOTE 11.    COMMON STOCK REPURCHASES
	From time to time, we acquire outstanding common stock in the open market to partially offset dilution from our equity award programs, to increase our return on invested capital and to bring our cash to a more appropriate level for our organization.
	On August 28, 2007, we announced the approval of a share repurchase plan under which we were authorized to repurchase up to $100.0 million of our common stock.
	On July 9, 2013, we announced the approval of a share repurchase program under which we were authorized to repurchase an additional $50.0 million of our common stock. The repurchase program does not have a termination date, and may be modified, extended or terminated at any time. We intend to retire all shares repurchased under the stock repurchase plan. The purchase price for the repurchased shares of Exar is reflected as a reduction of common stock and additional paid-in capital. We may continue to repurchase our common stock under the repurchase plan, which would reduce our cash, cash equivalents and/or short-term marketable securities available to fund future operations and to meet other liquidity requirements.
	As of December 29, 2013, we had repurchased shares valued at $92.2 million under the August 2007 repurchase program. During the three and nine months ended December 29, 2013, we repurchased $2.0 million and $4.0 million of our common stock under the July 2013 repurchase program, respectively. The repurchased shares were retired immediately. The remaining authorized amount for the stock repurchase under the repurchase programs is $57.8 million.
	Stock repurchase activities during the nine months ended December 29, 2013 were indicated below (in thousands, except per share amounts):
		Total number of	Average Price Paid		Amount Paid for
		Shares Purchased	Per Share		Purchase
			(or Unit)
	Balances, March 31, 2013	9,564	$	9.22	$	88,189
	Repurchases for nine months	309	$	12.94		4,000
	Balances, December 29, 2013	9,873	$	9.34	$	92,189
	Note: The average price paid per share is based on the total price paid by Exar, which includes applicable broker fees.

Note_12_StockBased_Compensatio

Note 12 - Stock-Based Compensation	9 Months Ended
	Dec. 29, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	'
	NOTE 12.    STOCK-BASED COMPENSATION
	Employee Stock Participation Plan (“ESPP”)
	Our ESPP permits employees to purchase common stock through payroll deductions at a purchase price that is equal to 95% of our common stock price on the last trading day of each three-calendar-month offering period. Our ESPP is non-compensatory.
	The following table summarizes our ESPP transactions during the fiscal periods presented (in thousands, except per share amounts):
		As of			Nine Months Ended
		December29,2013			December29,2013
		Shares of Common			Shares of Common				Weighted
		Stock			Stock				Average
									Price per Share
	Authorized to issue		4,500
	Reserved for future issuance		1,379
	Issued					13			$	11.47
	Equity Incentive Plans
	We currently have two equity incentive plans, in which shares are available for future issuance, the Exar Corporation 2006 Equity Incentive Plan (“2006 Plan”) and the Sipex Corporation (“Sipex”) 2006 Equity Incentive Plan (“Sipex Plan”), the latter of which was assumed in connection with the August 2007 acquisition of Sipex.
	The 2006 Plan authorizes the issuance of stock options, stock appreciation rights, restricted stock, stock bonuses and other forms of awards granted or denominated in common stock or units of common stock, as well as cash bonus awards. RSUs granted under the 2006 Plan are counted against authorized shares available for future issuance on a basis of two shares for every RSU issued. The 2006 Plan allows for performance-based vesting and partial vesting based upon the level of performance. Grants under the Sipex Plan are only available to former Sipex’s employees or employees we hired after the Sipex acquisition. At our annual meeting on September 15, 2010, our stockholders approved an amendment to the 2006 Plan to increase the aggregate share limit under the 2006 Plan by an additional 5.5 million shares to 8.3 million shares. At December 29, 2013, there were 2.0 million shares available for future grant under all our equity incentive plans.
	Stock Option Activities
	Our stock option transactions during the nine months ended December 29, 2013 were indicated below:
		Outstanding			Weighted				Weighted				Aggregate			In-the-money
					Average				Average				Intrinsic			Options
					Exercise				Remaining				Value			Vested and Exercisable
					Price per				Contractual				(in thousands)			(in thousands)
					Share				Term
									(in years)
	Balance at March 31, 2013		6,212,333		$	7.48				5.04			$	19,199		$	1,481
	Granted		1,460,300			12.38
	Exercised		(535,832	)		7.12
	Forfeited		(522,341	)		7.89
	Cancelled		(10,834	)		10.92
	Balance at December 29, 2013		6,603,626		$	8.56				5.07			$	21,985		$	2,062
	Vested and expected to vest, December 29, 2013		6,184,803		$	8.46				5			$	21,073
	Vested and exercisable, December 29, 2013		2,197,258		$	7.4				3.67			$	9,544
	The aggregate intrinsic values in the table above represent the total pre-tax intrinsic value, which is based on the closing price of our common stock of $11.63 and $10.50 as of December 29, 2013 and March 31, 2013, respectively. These are the values which would have been received by option holders if all option holders exercised their options on that date.
	In January 2012, we granted 480,000 performance-based stock options to our Chief Executive Officer, President and Director (“CEO”). The options are scheduled to vest in four equal annual installments at the end of fiscal years 2013 through 2016 if certain predetermined financial measures are met. If the financial measures are not met, each installment will be rolled over to the subsequent fiscal year for vesting except for the last installment. If the financial measures are not met for two consecutive years, the options will be forfeited except for the last installment which will be forfeited at the end of fiscal year 2016. We recorded $65,000 and $195,000 of compensation expense for these options in the three and nine months ended December 29, 2013, respectively. We recorded $65,000 and $195,000 of compensation expense for these options in the three and nine months ended December 30, 2012, respectively.
	Options exercised for the periods indicated below were as follows (in thousands):
		Three Months Ended							Nine Months Ended
		December29,			December30,				December29,				December30,
		2013			2012				2013				2012
	Intrinsic value of options exercised	$	805		$	304			$	2,699			$	879
	RSU Activities
	Our RSU transactions during the nine months ended December 29, 2013 are summarized as follows:
		Shares			Weighted				Weighted				Aggregate
					Average				Average				Intrinsic
					Grant-				Remaining				Value
					Date				Contractual				(in thousands)
					Fair Value				Term
									(in years)
	Unvested at March 31, 2013		732,204		$	7.73				1.72			$	7,688
	Granted		469,995			11.83
	Issued and released		(311,406	)		9.48
	Cancelled		(33,666	)		9.55
	Unvested at December 29, 2013		857,127		$	9.27				1.65			$	9,968
	Vested and expected to vest, December 29, 2013		761,615							1.6			$	8,858
	The aggregate intrinsic value of RSUs represents the closing price per share of our stock at the end of the periods presented, multiplied by the number of unvested RSUs or the number of vested and expected to vest RSUs, as applicable, at the end of each period.
	For RSUs, stock-based compensation expense was calculated based on our stock price on the date of grant, multiplied by the number of RSUs granted. The grant date fair value of RSUs less estimated forfeitures was recognized on a straight-line basis, over the vesting period.
	In March 2012, we granted 300,000 performance-based RSUs to our CEO. The RSUs are scheduled to start vesting in three equal annual installments at the end of fiscal year 2013 through 2015 with three year vesting periods if certain predetermined financial measures are met. If the financial measures are not met, each installment will be forfeited at the end of its respective fiscal year. In the three and nine months ended December 29, 2013, we recorded $119,000 and $641,000, respectively, of compensation expense for these awards. In the three and nine months ended December 30, 2012, we recorded $112,000 and $336,000, respectively, of compensation expense for these awards.
	During fiscal year 2014, we granted 50,000 performance-based RSUs to certain executives. The RSUs are scheduled to start vesting in the three equal annual installments at the end of fiscal 2014 through 2017 with three year vesting periods if certain predetermined financial measures are met. In addition, the annual vesting requires continued service through each of the vesting dates. During the three and nine months ended December 29, 2013, we recorded $91,000 and $239,000 of compensation expense for these awards, respectively.
	In August 2013, we announced the Fiscal Year 2014 Management Incentive Program (“2014 Incentive Program”). Under this program, each participant’s award is denominated in stock and subject to achievement of certain financial performance goals and the participant’s annual Management by Objective goals. In the three and nine months ended December 29, 2013, we recorded $0.2 million and $1.5 million of stock compensation expense related to the 2014 Incentive Program, respectively.
	Stock-Based Compensation Expense
	The following table summarizes stock-based compensation expense related to stock options and RSUs during the fiscal periods presented (in thousands):
		Three Months Ended							Nine Months Ended
		December29,			December30,				December29,				December30,
		2013			2012				2013				2012
	Cost of sales	$	165		$	175			$	519			$	289
Research and development		566			328				1,395				437
Selling, general and administrative		1,826			986				5,353				2,284
Total Stock-based compensation expense	$	2,557		$	1,489			$	7,267			$	3,010
The amount of stock-based compensation cost capitalized in inventory was immaterial for all periods presented.
Unrecognized Stock-Based Compensation Expense
The following table summarizes unrecognized stock-based compensation expense related to stock options and RSUs for the period indicated below as follows:
	29-Dec-13
	Amount			Weighted Average
	(in thousands)			Expected
				Remaining
				Period (in years)
Options	$	8,180			2.7
RSUs		5,322			2.3
Total Stock-based compensation expense	$	13,502
Valuation Assumptions
We estimate the fair value of stock options on the date of grant using the Black-Scholes option-pricing model. The assumptions used in calculating the fair value of stock-based compensation represent our estimates, but these estimates involve inherent uncertainties and the application of management’s judgment which include the expected term of the stock-based awards, stock price volatility and forfeiture rates. As a result, if factors change and we use different assumptions, our stock-based compensation expense could be materially different in the future.
We used the following weighted average assumptions to calculate the fair values of options granted during the fiscal periods presented:
	Three Months Ended									Nine Months Ended
	December29,				December30,					December29,				December30,
	2013				2012					2013				2012
Expected term of options (years)		4.5				4.4				4.4	–	4.5		4.2	–	4.5
Risk-free interest rate		1.01	%			0.5	%			0.60%	–	1.12%		0.5%	–	0.60%
Expected volatility		32	%			41	%			32%	–	35%		41%	–	42%
Expected dividend yield		–				–					–				–
Weighted average estimated fair value	$	3.74			$	2.81				$	3.56			$	2.76

Note_13_Lease_Financing_Obliga

Note 13 - Lease Financing Obligations	9 Months Ended
	Dec. 29, 2013
Disclosure Text Block Supplement [Abstract]	'
Debt and Capital Leases Disclosures [Text Block]	'
	NOTE 13.    LEASE FINANCING OBLIGATIONS
	We have acquired engineering design tools (“Design Tools”) under capital leases. We acquired Design Tools of $0.2 million in July 2013 under a 29-month license, $0.9 million in July 2012 under a three-year license, $4.5 million in December 2011 under a three-year license, $5.8 million in October 2011 under a three-year license, $1.0 million in June 2010 under a three-year license, $1.3 million in December 2009 under a 28-month license, and $1.1 million in July 2009 under a three-year license, all of which were accounted for as capital leases and recorded in the property, plant and equipment, net line item in the condensed consolidated balance sheets. The obligations related to the Design Tools were included in other current liabilities and long-term lease financing obligations in our condensed consolidated balance sheets as of December 29, 2013 and March 31, 2013, respectively. The effective interest rates for the Design Tools range from 2.0% to 7.25%.
	Amortization expense related to the Design Tools, which was recorded using the straight-line method over the remaining useful life for the periods indicated below was as follows (in thousands):
		Three Months Ended				Nine Months Ended
		December29,		December30,		December29,		December30,
		2013		2012		2013		2012
	Amortization expense	$	800	$	818	$	2,494	$	2,659
	Future minimum lease and sublease income payments for the lease financing obligations as of December 29, 2013 are as follows (in thousands):
	Fiscal Years	Design Tools
	2014 (3 months remaining)	$	370
	2015		1,456
	2016		59
	2017		10
	2018 and thereafter		6
	Total minimum lease payments		1,901
	Less: amount representing interest		95
	Present value of minimum lease payments		1,806
	Less: short-term lease financing obligations		1,700
	Long-term lease financing obligations	$	106
	Interest expense for the lease financing obligation for the periods indicated below was as follows (in thousands):
		Three Months Ended				Nine Months Ended
		December29,		December30,		December29,		December30,
		2013		2012		2013		2012
	Interest expense	$	39	$	35	$	115	$	107
	In the course of our business, we enter into arrangements accounted for as operating leases related to rental of office space. Rent expenses for all operating leases for the periods indicated below were as follows (in thousands):
		Three Months Ended				Nine Months Ended
		December29,		December30,		December29,		December30,
		2013		2012		2013		2012
	Rent expense	$	229	$	149	$	658	$	456
	Our future minimum lease payments for the lease operating obligations as of December 29, 2013 are as follows (in thousands):
	Fiscal Years	Facilities
	2014 (3 months remaining)	$	200
	2015		552
	2016		461
	2017		150
	2018 and thereafter		20
	Total minimum lease payments	$	1,383

Note_14_Commitments_and_Contin

Note 14 - Commitments and Contingencies	9 Months Ended
	Dec. 29, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies Disclosure [Text Block]	'
	NOTE 14.    COMMITMENTS AND CONTINGENCIES
	In 1986, Micro Power Systems Inc. (“MPSI”), a subsidiary that we acquired in June 1994, identified low-level groundwater contamination at its principal manufacturing site. The area and extent of the contamination appear to have been defined. MPSI previously reached an agreement with a prior tenant to share in the cost of ongoing site investigations and the operation of remedial systems to remove subsurface chemicals and well closure activities. In April 2012, the San Francisco Bay Regional Water Quality Control Board approved our application for low-threat closure and rescinded the previous cleanup order. All monitoring well closure activities on adjacent/neighboring sites have been completed. We have finalized and executed access environmental indemnity and tolling agreements, and deed restriction covenants with the property owner. The parties have agreed that onsite well closure activities can commence.
	Outstanding liabilities for remediation activities, net of payments, consisted of the following as of the dates indicated (in thousands):
		December29,			March 31,
		2013			2013
	Liabilities for remediation activities	$	31		$	76
	In early 2012, we received correspondences from the California Department of Toxic Substance Control (“DTSC”) regarding its ongoing investigation of hazardous wastes and hazardous waste constituents at a former regulated treatment facility in San Jose, California. In 1985, MPSI made two separate permitted hazmat deliveries to a licensed and regulated site for treatment. DTSC has requested that former/current property owners and companies, currently in excess of 50, that had hazardous waste treated at the site participate in further site assessment and limited remediation activities. We have entered into various agreements with other named generators, former property owners and DTSC limited to the investigation of the sites’ condition and evaluation, and selection of appropriate remedial measures. The designated environmental consulting firm is moving forward with the agreed preliminary site assessment and periodic status reporting. Given that this matter is in the early stages of investigation and discussions are ongoing, we are unable to ascertain our exposure, if any.
	In a letter dated March 27, 2012, Exar was notified by the Alameda County Water District (“ACWD”) of the recent detection of volatile organic compounds at a site adjacent to a facility that was previously owned and occupied by Sipex. The letter was also addressed to prior and current property owners and tenants (collectively “Property Owners”). ACWD requested that the property owners carry out further site investigation activities to determine if the detected compounds are emanating from the site or simply flowing under it. In June 2012, the Property Owners filed with ACWD a report of its investigation/characterization activities and analytical data obtained. Accumulated data suggests that compounds of concern in groundwater appear to be from an offsite source. ACWD is investigating alternative upgradient sites. Given that this investigation is ongoing, we are unable to ascertain our exposure, if any.
	We warrant all custom products and application specific products, including cards and boards, against defects in materials and workmanship for a period of 12 months, and occasionally we may provide an extended warranty from the delivery date. We warrant all of our standard products against defects in materials and workmanship for a period of 90 days from the date of delivery. Reserve requirements are recorded in the period of sale and are based on an assessment of the products sold with warranty, historical warranty costs incurred and customer/product specific circumstances. Our liability is generally limited, at our option, to replacing, repairing, or issuing a credit (if it has been paid for). Our warranty does not cover damage which results from accident, misuse, abuse, improper line voltage, fire, flood, lightning or other damage resulting from modifications, repairs or alterations performed other than by us, or resulting from failure to comply with our written operating and maintenance instructions. Warranty expense has historically been immaterial for our products. The remaining balance of warranty liabilities established for the return and replacement of certain older generation data compression products shipped in prior years was $1.2 million as of December 29, 2013, and warranty liability as of March 31, 2013 was immaterial.
	As of the dates indicated below, our warranty reserve balance, which is included in the “Other current liabilities” line item on the condensed consolidated balance sheets, consisted of the following (in thousands):
		December 29,			March 31,
		2013			2013
	Beginning balance	$	50		$	90
	Provisions for warranties issued		1,440		─
	Settlements/adjustments		(328	)		(40	)
	Ending balance	$	1,162		$	50
	In the ordinary course of business, we may provide for indemnification of varying scope and terms to customers, vendors, lessors, business partners, purchasers of assets or subsidiaries, and other parties with respect to certain matters, including, but not limited to, losses arising out of our breach of agreements or representations and warranties made by us, services to be provided by us, intellectual property infringement claims made by third parties or, matters related to our conduct of the business. In addition, we have entered into indemnification agreements with our directors and certain of our executive officers that will require us, among other things, to indemnify them against certain liabilities that may arise by reason of their status or service as directors or executive officers. We maintain director and officer liability insurance, which may cover certain liabilities arising from our obligation to indemnify our directors and officers, and former directors and officers of acquired companies, in certain circumstances.
	It is not possible to determine the aggregate maximum potential loss under these indemnification agreements due to the unique facts and circumstances involved in each particular agreement and claims. Such indemnification agreements might not be subject to maximum loss clauses. Historically, we have not incurred material costs as a result of obligations under these agreements and we have not accrued any liabilities related to such indemnification obligations in our condensed consolidated financial statements.

Note_15_Legal_Proceedings

Note 15 - Legal Proceedings	9 Months Ended
	Dec. 29, 2013
Disclosure Text Block Supplement [Abstract]	'
Legal Matters and Contingencies [Text Block]	'
	NOTE 15.    LEGAL PROCEEDINGS
	From time to time, we are involved in various claims, legal actions and complaints arising in the normal course of business. Although the ultimate outcome of the matters discussed below and other matters is not presently determinable, management currently believes that the resolution of all such pending matters will not have a material adverse effect on our financial position, results of operations or cash flows.
	Two former employees of Exar’s French subsidiary have filed claims against that French subsidiary for alleged unfair dismissal in the French Labor Courts. We believe that the former employees were terminated in accordance with the requirements of French law and that the former employees’ claims are not supported by any relevant evidence. One matter is scheduled for trial in February, 2014. The other matter is in the early procedural stages. We intend to vigorously defend our positions.

Note_16_Income_Taxes

Note 16 - Income Taxes	9 Months Ended
	Dec. 29, 2013
Income Tax Disclosure [Abstract]	'
Income Tax Disclosure [Text Block]	'
	NOTE 16.    INCOME TAXES
	During the three months ended December 29, 2013, we recorded an income tax benefit of approximately $1.4 million, which was primarily due to the lapsing of statute of limitations in federal and state jurisdictions, offset by income tax expense in certain of our non-US operations. During the nine months ended December 29, 2013, we recorded an income tax benefit of approximately $8.2 million. The income tax benefit was primarily due to the impact of the acquisition of Cadeka on Exar’s valuation allowance, the impact of which is recorded outside of purchase accounting, resulting in a release of the valuation allowance and an income tax benefit of $6.8 million. In the three and nine months ended December 30, 2012, we recorded $1.3 million each of income tax benefit which mainly resulted from the release of a $1.3 million reserve for uncertain tax positions related to an NOL carryback refund. The reserve was released due to the expiration of the statute of limitations in U.S. tax jurisdictions.
	During the three and nine months ended December 29, 2013, the unrecognized tax benefits each decreased by $1.4 million to $14.0 million. The current unrecognized tax benefit was primarily related to the release of foreign liabilities and interest due to the lapse of statute of limitations and R&D credits. If recognized, $11.4 million of these unrecognized tax benefits (net of federal benefit) would be recorded as a reduction of future income tax provision before consideration of changes in the valuation allowance for deferred tax assets.
	Estimated interest and penalties related to the income taxes are classified as a component of the provision for income taxes in the condensed consolidated statement of operations. Accrued interest and penalties consisted of the following as of the dates indicated (in thousands):
		December 29,		March 31,
		2013		2013
	Accrued interest and penalties	$	97	$	228
	Our major tax jurisdictions are the United States federal and various states, Canada, China and certain other foreign jurisdictions. The fiscal years 2003 through 2013 remain open and subject to examinations by the appropriate governmental agencies in the United States and certain foreign jurisdictions.
	On November 6, 2012, California passed Proposition 39, which mandates most taxpayers to apportion their California income by using a single sales factor and requires all taxpayers to use market-based sourcing for sale receipts for tax years beginning or after January 1, 2013. The enacted law did not have a material impact on our financial position, results of operations or cash flows.
	Per the 2012 Tax Relief Act enacted in January 2013, the federal R&D credit is retroactively extended through 2013. No R&D credit and related reserve is considered in the third quarter of fiscal year 2014 tax provision pending improvement in our future visibility of the incremental R&D expenses. However, as a full valuation allowance is placed on the deferred tax assets, there is no impact on the statement of operations.

Note_17_Segment_and_Geographic

Note 17 - Segment and Geographic Information	9 Months Ended
	Dec. 29, 2013
Segment Reporting [Abstract]	'
Segment Reporting Disclosure [Text Block]	'
	NOTE 17.    SEGMENT AND GEOGRAPHIC INFORMATION
	We operate in one reportable segment which is comprised of one operating segment. We design, develop and market high performance analog mixed-signal integrated circuits and advanced sub-system solutions for the Networking & Storage, Industrial & Embedded Systems, and Communications Infrastructure markets. Our product portfolio includes power management and connectivity components, communications products, high precision or high speed analog ICs, and data compression and storage solutions.
	Our net sales by end market were summarized as follows as of the dates indicated below (in thousands):
		Three Months Ended				Nine Months Ended
		December29,		December30,		December29,		December30,
		2013		2012		2013		2012
	Industrial & Embedded Systems	$	18,429	$	16,119	$	52,870	$	48,130
	Networking & Storage		7,104		9,300		27,284		23,391
	Communications Infrastructure		5,089		5,270		16,762		18,735
	Other		68		310		419		616
	Total net sales	$	30,690	$	30,999	$	97,335	$	90,872
	Our foreign operations are conducted primarily through our wholly-owned subsidiaries in Canada, China, France, Germany, Japan, Malaysia, South Korea, Taiwan and the United Kingdom. Our principal markets include North America, Europe and the Asia Pacific region. Net sales by geographic areas represent direct sales principally to original equipment manufacturers (“OEM”), or their designated subcontract manufacturers, and to distributors (affiliated and unaffiliated) who buy our products and resell to their customers.
	Our net sales by geographic area for the periods indicated below were as follows (in thousands):
		Three Months Ended				Nine Months Ended
		December29,		December30,		December29,		December30,
		2013		2012		2013		2012
	China	$	11,566	$	10,749	$	33,860	$	31,458
	United States		9,285		8,711		31,325		22,987
	Singapore		3,138		3,245		10,068		10,561
	Germany		2,456		2,662		8,124		8,865
	Japan		1,575		1,499		4,415		4,367
	Europe (excluding Germany)		907		1,111		2,431		3,654
	Rest of world		1,763		3,022		7,112		8,980
	Total net sales	$	30,690	$	30,999	$	97,335	$	90,872
	Substantially all of our long-lived assets at each of December 29, 2013 and March 31, 2013 were located in the United States.
	The following distributors and customer accounted for 10% or more of our net sales in the periods indicated:
		Three Months Ended				Nine Months Ended
		December29,		December 30,		December29,		December 30,
		2013		2012		2013		2012
	Distributor A	26	%	28	%	26	%	30	%
	Distributor B	21	%	10	%	23	%	10	%
	Distributor C	13	%	10	%	11	%	10	%
	Customer A	*		12	%	*		*
	*     Net sales for this distributor or customer for this period were less than 10% of our net sales.
	No other distributor or customer accounted for 10% or more of the net sales for the three and nine months ended December 29, 2013 and December 30, 2012, respectively.
	The following distributors accounted for 10% or more of our net accounts receivable as of the dates indicated:
		December29,		March 31,
		2013		2013
	Distributor A		*		21%
	Distributor B		45%		20%
	Distributor D		*		11%
	*     Accounts receivable for this distributor for this period were less than 10% of the net account balance.
	No other distributor or customer accounted for 10% or more of the net accounts receivable as of December 29, 2013 and March 31, 2013, respectively.

Note_18_Assets_Held_For_Sale

Note 18 - Assets Held For Sale	9 Months Ended
	Dec. 29, 2013
Disclosure Text Block Supplement [Abstract]	'
Other Assets Disclosure [Text Block]	'
	NOTE 18.    ASSETS HELD FOR SALE
	During fiscal year 2013, we started actively looking for potential buyers for our Fremont campus. In the first quarter of our fiscal year 2014, we reclassified the related property and land as held for sale as of June 30, 2013, as we met all criteria to classify these assets as held for sale as of that date. These assets have been recorded at their carrying amount since it is lower than their estimated fair value, less estimated selling costs (in thousands). As required under current accounting guidance, depreciation of the building ceased upon reclassification as an asset held for sale.
		December29,
		2013
	Land	$	6,660
	Building		6,423
	Total assets held for sale	$	13,083
	On July 9, 2013, we entered into a Purchase and Sale Agreement (“Purchase Agreement”) with Ellis Partners LLC (“Ellis”). The Purchase Agreement provided for the sale of Exar’s Fremont campus to Ellis Partners and the leaseback by Exar of the building located at 48760 Kato Road. The Purchase Agreement was anticipated to close by the end of September 2013. Prior to closing, Ellis requested certain modifications to the Purchase Agreement that Exar deemed unacceptable. As a result, the Purchase Agreement terminated as of September 30, 2013. The Company intends to continue pursuing options to optimize its operating efficiency, including continuing to market the facilities for sale.

Note_19_Subsequent_Events

Note 19 - Subsequent Events	9 Months Ended
	Dec. 29, 2013
Policy Text Block [Abstract]	'
Subsequent Events, Policy [Policy Text Block]	'
	NOTE 19.    SUBSEQUENT EVENTS
	On January 14, 2014, we acquired Stretch, Inc. (“Stretch”), a provider of software configurable processors supporting the video surveillance market. The transaction will provide Exar with the technology to deliver an end-to-end high-definition solution for both digital and analog transmission of data from the camera to the DVR or NVR in surveillance applications. Stretch was acquired via a reverse triangular merger for which the purchase consideration was $10,000 in cash. By acquiring Stretch, Exar acquired all of Stretch’s assets, consisting principally intellectual property, accounts receivable and inventory, as well as assumed all of Stretch’s liabilities and contractual obligations of approximately $10.0 million of which approximatetly $7.2 million has been paid subsequent to quarter-end.
	Stretch’s results of operations and estimated fair value of assets acquired and liabilities assumed will be included in our condensed consolidated financial statements beginning January 14, 2014.

Accounting_Policies_by_Policy_

Accounting Policies, by Policy (Policies)	9 Months Ended
	Dec. 29, 2013
Accounting Policies [Abstract]	'
Basis of Accounting, Policy [Policy Text Block]	'
	Basis of Presentation and Use of Management Estimates—The accompanying condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements and should be read in conjunction with the financial statements and notes thereto included in our Annual Report on Form 10-K for the fiscal year ended March 31, 2013 as filed with the SEC. In the opinion of management, the accompanying condensed consolidated financial statements contain all adjustments, consisting only of normal recurring adjustments, that we believe are necessary for a fair statement of Exar’s financial position as of December 29, 2013 and results of operations for the three and nine months ended December 29, 2013 and December 30, 2012, respectively. These condensed consolidated financial statements are not necessarily indicative of the results to be expected for the entire year.
	The financial statements include management’s estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the financial statements and the reported amounts of sales and expenses during the reporting periods. Actual results could differ from those estimates, and material effects on operating results and financial position may result.
	Our fiscal years consist of 52 or 53 weeks. In a 52-week year, each fiscal quarter consists of 13 weeks. Fiscal years 2014 and 2013 consisted of 52 weeks. The third quarter of fiscal years 2014 and 2013 both consisted of 13 weeks.
Business Combinations Policy [Policy Text Block]	'
	We periodically evaluate potential strategic acquisitions or arrangements to broaden our product offering and build upon our existing library of intellectual property, human capital and engineering talent in order to expand our capabilities in the areas in which we operate or to acquire complementary businesses.
	We account for each business combination by applying the acquisition method, which requires (1) identifying the acquiree; (2) determining the acquisition date; (3) recognizing and measuring the identifiable assets acquired, the liabilities assumed, and any noncontrolling interest we have in the acquiree at their acquisition date fair value; and (4) recognizing and measuring goodwill or a gain from a bargain purchase.
	Assets acquired and liabilities assumed in a business combination that arise from contingencies are recognized at fair value on the acquisition date if fair value can be determined during the measurement period. If fair value cannot be determined, we typically account for the acquired contingencies using existing guidance for a reasonable estimate.
	To establish fair value, we measure the price that would be received to sell an asset or paid to transfer a liability in an ordinary transaction between market participants. The measurement assumes the highest and best use of the asset by the market participants that would maximize the value of the asset or the group of assets within which the asset would be used at the measurement date, even if the intended use of the asset is different.
	Acquisition related costs, including finder’s fees, advisory, legal, accounting, valuation and other professional or consulting fees are accounted for as expenses in the periods in which the costs are incurred and the services are received, with the exception that the costs to issue debt or equity securities are recognized in accordance with other applicable GAAP.
Fair Value Measurement, Policy [Policy Text Block]	'
	Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. GAAP describes a fair value hierarchy based on three levels of inputs, of which the first two are considered observable and the last unobservable, that may be used to measure fair value as follows:
	Level 1 – Quoted prices in active markets for identical assets or liabilities.
	Level 2 – Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
	Level 3 – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
	Our cash and investment instruments are classified within Level 1 or Level 2 of the fair value hierarchy because they are valued using quoted market prices, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency.
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]	'
	Goodwill
	Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in a business combination. We evaluate goodwill for impairment on an annual basis or whenever events and changes in circumstances suggest that the carrying amount may not be recoverable. We conduct our annual impairment analysis in the fourth quarter of each fiscal year. Impairment of goodwill is tested at the reporting unit level by comparing the reporting unit’s carrying amount, including goodwill, to the fair value of the reporting unit. Estimations and assumptions regarding the number of reporting units, future performances, results of our operations and comparability of our market capitalization and net book value will be used. If the carrying amount of the reporting unit exceeds its fair value, goodwill is considered impaired and a second step is performed to measure the amount of impairment loss. Because we have one reporting unit, we utilize an entity-wide approach to assess goodwill for impairment. As of December 29, 2013, no events or changes in circumstances suggest that the carrying amount for goodwill may not be recoverable and therefore we did not perform an interim goodwill impairment analysis.
Earnings Per Share, Policy [Policy Text Block]	'
	Basic net income (loss) per share excludes dilution and is computed by dividing net income (loss) by the weighted average number of common shares outstanding for the applicable period. Diluted earnings per share reflects the potential dilution that would occur if outstanding stock options or warrants to purchase common stock were exercised for common stock, using the treasury stock method, and the common stock underlying outstanding restricted stock units (“RSUs”) was issued.

Note_3_Business_Combinations_T

Note 3 - Business Combinations (Tables)	9 Months Ended
	Dec. 29, 2013
Business Combinations [Abstract]	'
Schedule Of Consideration Paid [Table Text Block]	'
		Amount
	Cash	$	25,000
	Equity instruments		5,177
	Estimated fair value of earn-out payments		4,660
	Total consideration paid	$	34,837
		Amount
	Cash	$	1,000
	Equity instruments		3,740
	Estimated fair value of earn-out payments		10,138
	Total consideration paid	$	14,878
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	'
		Amount
	Identifiable tangible assets (liabilities)
	Cash	$	1,055
	Accounts Receivable		241
	Inventories		1,756
	Property, plant and equipment		231
	Other assets		3
	Accounts payable and accruals		(7,400	)
	Other short-term liabilities		(520	)
	Long-term liabilities		(126	)
	Total identifiable tangible assets (liabilities), net		(4,760	)
	Identifiable intangible assets		20,380
	Total identifiable assets, net		15,620
	Goodwill		19,217
	Fair value of total consideration transferred	$	34,837
		Amount
	Identifiable tangible assets
	Inventories	$	126
	Property, plant and equipment		140
	Other assets		36
	Accounts payable and accruals		(24	)
	Other short-term liabilities		(51	)
	Long-term liabilities		(61	)
	Total identifiable tangible assets, net		166
	Identifiable intangible assets – existing technology		7,540
	Total identifiable assets, net		7,706
	Goodwill		7,172
	Fair value of total consideration transferred	$	14,878
Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]	'
		Fair Value
	Developed technologies	$	15,720
	In-process research and development		2,280
	Customer relations		2,170
	Trade name		210
	Total identifiable intangible assets	$	20,380

Note_4_Fair_Value_Tables

Note 4 - Fair Value (Tables)	9 Months Ended
	Dec. 29, 2013
Fair Value Disclosures [Abstract]	'
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	'
		29-Dec-13
		Level 1				Level 2			Level 3			Total
	Assets:
	Money market funds	$	13,961			$	—		$	—		$	13,961
	U.S. government and agency securities		11,537				21,254			—			32,791
	State and local government securities		—				2,798			—			2,798
	Corporate bonds and securities		4				72,721			—			72,725
	Asset-backed securities		—				30,354			—			30,354
	Mortgage-backed securities		—				16,034			—			16,034
	Total investment assets	$	25,502			$	143,161		$	—		$	168,663
	Liabilities:
	Acquisition-related contingent consideration – Altior	$	—			$	—		$	7,741		$	7,741
	Acquisition-related contingent consideration – Cadeka	$	—			$	—		$	4,620		$	4,620
	Total liabilities	$	—			$	—		$	12,361		$	12,361
		31-Mar-13
		Level 1				Level 2			Level 3			Total
	Assets:
	Money market funds	$	5,042			$	—		$	—		$	5,042
	U.S. government and agency securities		22,460				19,261			—			41,721
	State and local government securities		—				2,935			—			2,935
	Corporate bonds and securities		274				91,955			—			92,229
	Asset-backed securities		—				30,966			—			30,966
	Mortgage-backed securities		—				22,736			—			22,736
	Total investment assets	$	27,776			$	167,853		$	—		$	195,629
	Liabilities:
	Acquisition-related contingent consideration – Altior	$	—			$	—		$	10,138		$	10,138
Fair Value Inputs, Assets, Quantitative Information [Table Text Block]	'
		Fair Value			Valuation		Significant
		(in thousands)			Technique		Unobservable Input
	As of December 29, 2013
	Acquisition-related contingent consideration – Altior	$	7,741		Combination of income and marketable approach		Revenue and Probability of Achievement
	Acquisition-related contingent consideration – Cadeka	$	4,620		Combination of income and marketable approach		Revenue and Probability of Achievement
Schedule of Change in Fair Value of Purchase Consideration Liability [Table Text Block]	'
		December 29,
		2013
	As of March 31, 2013	$	10,138
	Less: Adjustment to purchase consideration		(2,397	)
	As of December 29, 2013	$	7,741
		December 29,
		2013
	As of March 31, 2013	$	—
	Purchase contingent consideration		4,660
	Less: Adjustment to purchase consideration		(40	)
	As of December 29, 2013	$	4,620
Marketable Securities [Table Text Block]	'
		December29,				March 31,
		2013				2013
	Cash and cash equivalents
	Cash at financial institutions	$	7,109			$	9,676
	Cash equivalents
	Money market funds		13,961				5,042
	Total cash and cash equivalents	$	21,070			$	14,718
	Available-for-sale securities
	U.S. government and agency securities	$	32,791			$	41,721
	State and local government securities		2,798				2,935
	Corporate bonds and securities		72,725				92,229
	Asset-backed securities		30,354				30,966
	Mortgage-backed securities		16,034				22,736
	Total short-term marketable securities	$	154,702			$	190,587
Realized Gain (Loss) on Investments [Table Text Block]	'
		Three Months Ended							Nine Months Ended
		December 29,				December 30,			December 29,			December 30,
		2013				2012			2013			2012
	Gross realized gains	$	136			$	233		$	518		$	617
	Gross realized losses		(69	)			(229	)		(477	)		(766	)
	Net realized income (losses)	$	67			$	4		$	41		$	(149	)
Available-for-sale Securities [Table Text Block]	'
		29-Dec-13
		Amortized				Unrealized			Unrealized			Fair
		Cost				Gross			Gross			Value
						Gains (1)			Losses (1)
	Money market funds	$	13,961			$	—		$	—		$	13,961
	U.S. government and agency securities		32,840				1			(50	)		32,791
	State and local government securities		2,797				5			(4	)		2,798
	Corporate bonds and securities		72,730				60			(65	)		72,725
	Asset-backed securities		30,396				14			(56	)		30,354
	Mortgage-backed securities		16,064				19			(49	)		16,034
	Total investments	$	168,788			$	99		$	(224	)	$	168,663
		31-Mar-13
		Amortized				Unrealized			Unrealized			Fair
		Cost				Gross			Gross			Value
						Gains (1)			Losses (1)
	Money market funds	$	5,042			$	—		$	—		$	5,042
	U.S. government and agency securities		41,694				27			—			41,721
	State and local government securities		2,927				10			(2	)		2,935
	Corporate bonds and securities		92,059				215			(45	)		92,229
	Asset-backed securities		30,932				61			(27	)		30,966
	Mortgage-backed securities		22,646				194			(104	)		22,736
	Total investments	$	195,300			$	507		$	(178	)	$	195,629
Investments Classified by Contractual Maturity Date [Table Text Block]	'
		29-Dec-13							31-Mar-13
		Amortized				Fair Value			Amortized			Fair Value
		Cost							Cost
	Less than 1 year	$	61,616			$	61,615		$	61,011		$	61,029
	Due in 1 to 5 years		107,172				107,048			134,289			134,600
	Total	$	168,788			$	168,663		$	195,300		$	195,629
Schedule of Unrealized Loss on Investments [Table Text Block]	'
		29-Dec-13
		Less than 12 months							12 months or greater						Total
		Fair Value				Gross			Fair Value			Gross			Fair Value		Gross
						Unrealized						Unrealized					Unrealized
						Losses						Losses					Losses
	U.S. government and agency securities	$	28,772			$	(50	)	$	—		$	—		$	28,772	$	(50	)
	State and local government securities		1,516				(4	)		—			—			1,516		(4	)
	Corporate bonds and securities		35,179				(65	)		—			—			35,179		(65	)
	Asset-backed securities		15,301				(25	)		3,467			(31	)		18,768		(56	)
	Mortgage-backed securities		8,249				(22	)		2,174			(27	)		10,423		(49	)
	Total	$	89,017			$	(166	)	$	5,641		$	(58	)	$	94,658	$	(224	)
		31-Mar-13
		Less than 12 months							12 months or greater						Total
		Fair Value				Gross			Fair Value			Gross			Fair Value		Gross
						Unrealized						Unrealized					Unrealized
						Losses						Losses					Losses
	State and local government securities	$	—			$	—		$	404		$	(2	)	$	404	$	(2	)
	Corporate bonds and securities		29,609				(42	)		497			(3	)		30,106		(45	)
	Asset-backed securities		10,008				(17	)		1,241			(10	)		11,249		(27	)
	Mortgage-backed securities		2,911				(39	)		3,263			(65	)		6,174		(104	)
	Total	$	42,528			$	(98	)	$	5,405		$	(80	)	$	47,933	$	(178	)

Note_5_Goodwill_and_Intangible1

Note 5 - Goodwill and Intangible Assets (Tables)	9 Months Ended
	Dec. 29, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Schedule of Goodwill [Table Text Block]	'
		December 29,		March 31,
		2013		2013
	Beginning balance	$	10,356	$	3,184
	Goodwill additions		19,217		7,172
	Ending balance	$	29,573	$	10,356
Schedule of Finite-Lived Intangible Assets [Table Text Block]	'
		29-Dec-13							31-Mar-13
				Accumulated			Net		Carrying		Accumulated			Net
		Carrying		Amortization			Carrying		Amount		Amortization			Carrying
		Amount					Amount							Amount
	Amortized intangible assets:
	Existing technology	$	58,588	$	(35,647	)	$	22,941	$	42,858	$	(30,668	)	$	12,190
	Customer relationships		5,075		(2,539	)		2,536		2,905		(2,079	)		826
	Patents/Core technology		3,459		(3,328	)		131		3,459		(3,182	)		277
	Distributor relationships		1,264		(1,264	)		—		1,264		(1,219	)		45
	Tradenames		210		(35	)		175		—		—			—
	Total intangible assets subject to amortization		68,596		(42,813	)		25,783		50,486		(37,148	)		13,338
	In-process research and development		2,280		—			2,280		—		—			—
	Total	$	70,876	$	(42,813	)	$	28,063	$	50,486	$	(37,148	)	$	13,338
Finite-lived Intangible Assets Amortization Expense [Table Text Block]	'
		Three Months Ended					Nine Months Ended
		December 29,		December 30,			December 29,		December 30,
		2013		2012			2013		2012
	Amortization expense	$	1,991	$	994		$	5,665	$	3,155
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	'
	Amortization Expense (by fiscal year)
	2014 (3 months remaining)	$	1,991
	2015		6,039
	2016		4,863
	2017		3,449
	2018		3,255
	2019 and thereafter		6,186
	Total future amortization	$	25,783

Note_6_LongTerm_Investment_Tab

Note 6 - Long-Term Investment (Tables)	9 Months Ended
	Dec. 29, 2013
Investments Schedule [Abstract]	'
Investment Holdings, Schedule of Investments [Text Block]	'
		December29,			March 31,
		2013			2013
	Beginning balance	$	1,288		$	1,273
	Contributions		—			15
	Distributions		(25	)		—
	Ending balance	$	1,263		$	1,288

Note_7_Related_Party_Transacti1

Note 7 - Related Party Transaction (Tables)	9 Months Ended
	Dec. 29, 2013
Total Net Sales [Member]	'
Note 7 - Related Party Transaction (Tables) [Line Items]	'
Schedule of Related Party Transactions [Table Text Block]	'
		Three Months Ended				Nine Months Ended
		December 29,		December 30,		December 29,		December 30,
		2013		2012		2013		2012
	Alonim		29%		28%		27%		30%
Net Accounts Receivable [Member]	'
Note 7 - Related Party Transaction (Tables) [Line Items]	'
Schedule of Related Party Transactions [Table Text Block]	'
		December29,		March 31,
		2013		2013
	Alonim		*		21%

Note_8_Restructuring_Charges_a1

Note 8 - Restructuring Charges and Exit Costs (Tables)	9 Months Ended
	Dec. 29, 2013
Restructuring and Related Activities [Abstract]	'
Restructuring and Related Costs [Table Text Block]	'
		29-Dec-13
		Beginning		Additions/		Non-cash			Payments			Ending
		balance		adjustments		charges						balance
	Lease termination and other costs	$	2,860	$	158	$	(4	)	$	(1,581	)	$	1,433
	Severance		426		1,353		—			(1,205	)		574
	Balance at December 29, 2013	$	3,286	$	1,511	$	(4	)	$	(2,786	)	$	2,007
		31-Mar-13
		Beginning		Additions/		Non-cash			Payments			Ending
		balance		adjustments		charges						balance
	Lease termination costs and others	$	5,235	$	6	$	(56	)	$	(2,325	)	$	2,860
	Severance		2,806		1,548		—			(3,928	)		426
	Balance at March 31, 2013	$	8,041	$	1,554	$	(56	)	$	(6,253	)	$	3,286

Note_9_Balance_Sheet_Detail_Ta

Note 9 - Balance Sheet Detail (Tables)	9 Months Ended
	Dec. 29, 2013
Disclosure Text Block Supplement [Abstract]	'
Schedule of Inventory, Current [Table Text Block]	'
		December29,			March 31,
		2013			2013
	Work-in-process and raw materials	$	14,454		$	9,981
	Finished goods		10,496			9,449
	Total inventories	$	24,950		$	19,430
Property, Plant and Equipment [Table Text Block]	'
		December29,			March 31,
		2013			2013
	Land	$	—		$	6,660
	Building		860			16,224
	Machinery and equipment		40,736			42,258
	Software and licenses		17,377			17,566
	Property, plant and equipment, total		58,973			82,708
	Accumulated depreciation and amortization		(50,189	)		(58,608	)
	Total property, plant and equipment, net	$	8,784		$	24,100
Other Current Liabilities [Table Text Block]	'
		December29,			March 31,
		2013			2013
	Fair value of earn-out liability – short-term	$	2,230		$	2,599
	Accrued restructuring charges and exit costs		1,957			2,020
	Short-term lease financing obligations		1,700			3,189
	Accrued manufacturing expenses, royalties and licenses		1,669			2,370
	Purchase consideration holdback		1,256			250
	Accrued legal and professional services		866			746
	Accrued sales and marketing expenses		573			576
	Accrual for dispute resolution		—			2,727
	Other		900			738
	Total other current liabilities	$	11,151		$	15,215
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Noncurrent [Text Block]	'
		December29,			March 31,
		2013			2013
	Fair value of earn-out liability – long–term	$	10,131		$	7,539
	Long-term taxes payable		749			2,225
	Accrued restructuring charges and exit costs		14			1,266
	Other		636			174
	Total other non-current obligations	$	11,530		$	11,204

Note_10_Net_Income_Loss_Per_Sh1

Note 10 - Net Income (Loss) Per Share (Tables)	9 Months Ended
	Dec. 29, 2013
Earnings Per Share [Abstract]	'
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	'
		Three Months Ended					Nine Months Ended
		December29,			December30,		December29,		December30,
		2013			2012		2013		2012
	Net income (loss)	$	(1,634	)	$	1,523	$	5,654	$	1,210
	Shares used in computation of net income (loss) per share:
	Basic		47,529			45,925		47,277		46,228
	Effect of options and awards		—			513		1,538		395
	Diluted		47,529			46,438		48,815		46,623
	Net income (loss) per share
	Basic	$	(0.03	)	$	0.03	$	0.12	$	0.03
	Diluted	$	(0.03	)	$	0.03	$	0.12	$	0.03

Note_11_Common_Stock_Repurchas1

Note 11 - Common Stock Repurchases (Tables)	9 Months Ended
	Dec. 29, 2013
Stockholders' Equity Note [Abstract]	'
Schedule of Share-based Compensation, Activity [Table Text Block]	'
		Total number of	Average Price Paid		Amount Paid for
		Shares Purchased	Per Share		Purchase
			(or Unit)
	Balances, March 31, 2013	9,564	$	9.22	$	88,189
	Repurchases for nine months	309	$	12.94		4,000
	Balances, December 29, 2013	9,873	$	9.34	$	92,189

Note_12_StockBased_Compensatio1

Note 12 - Stock-Based Compensation (Tables)	9 Months Ended
	Dec. 29, 2013
Note 12 - Stock-Based Compensation (Tables) [Line Items]	'
Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity [Table Text Block]	'
		As of			Nine Months Ended
		December29,2013			December29,2013
		Shares of Common			Shares of Common				Weighted
		Stock			Stock				Average
									Price per Share
	Authorized to issue		4,500
	Reserved for future issuance		1,379
	Issued					13			$	11.47
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]	'
		Three Months Ended							Nine Months Ended
		December29,			December30,				December29,				December30,
		2013			2012				2013				2012
	Intrinsic value of options exercised	$	805		$	304			$	2,699			$	879
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]	'
		Shares			Weighted				Weighted				Aggregate
					Average				Average				Intrinsic
					Grant-				Remaining				Value
					Date				Contractual				(in thousands)
					Fair Value				Term
									(in years)
	Unvested at March 31, 2013		732,204		$	7.73				1.72			$	7,688
	Granted		469,995			11.83
	Issued and released		(311,406	)		9.48
	Cancelled		(33,666	)		9.55
	Unvested at December 29, 2013		857,127		$	9.27				1.65			$	9,968
	Vested and expected to vest, December 29, 2013		761,615							1.6			$	8,858
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]	'
		Three Months Ended							Nine Months Ended
		December29,			December30,				December29,				December30,
		2013			2012				2013				2012
	Cost of sales	$	165		$	175			$	519			$	289
	Research and development		566			328				1,395				437
	Selling, general and administrative		1,826			986				5,353				2,284
	Total Stock-based compensation expense	$	2,557		$	1,489			$	7,267			$	3,010
Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block]	'
		29-Dec-13
		Amount			Weighted Average
		(in thousands)			Expected
					Remaining
					Period (in years)
	Options	$	8,180			2.7
	RSUs		5,322			2.3
	Total Stock-based compensation expense	$	13,502
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	'
		Three Months Ended									Nine Months Ended
		December29,				December30,					December29,				December30,
		2013				2012					2013				2012
	Expected term of options (years)		4.5				4.4				4.4	–	4.5		4.2	–	4.5
	Risk-free interest rate		1.01	%			0.5	%			0.60%	–	1.12%		0.5%	–	0.60%
	Expected volatility		32	%			41	%			32%	–	35%		41%	–	42%
	Expected dividend yield		–				–					–				–
	Weighted average estimated fair value	$	3.74			$	2.81				$	3.56			$	2.76
Employee Stock Option [Member]	'
Note 12 - Stock-Based Compensation (Tables) [Line Items]	'
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]	'
		Outstanding			Weighted				Weighted				Aggregate			In-the-money
					Average				Average				Intrinsic			Options
					Exercise				Remaining				Value			Vested and Exercisable
					Price per				Contractual				(in thousands)			(in thousands)
					Share				Term
									(in years)
	Balance at March 31, 2013		6,212,333		$	7.48				5.04			$	19,199		$	1,481
	Granted		1,460,300			12.38
	Exercised		(535,832	)		7.12
	Forfeited		(522,341	)		7.89
	Cancelled		(10,834	)		10.92
	Balance at December 29, 2013		6,603,626		$	8.56				5.07			$	21,985		$	2,062
	Vested and expected to vest, December 29, 2013		6,184,803		$	8.46				5			$	21,073
	Vested and exercisable, December 29, 2013		2,197,258		$	7.4				3.67			$	9,544

Note_13_Lease_Financing_Obliga1

Note 13 - Lease Financing Obligations (Tables)	9 Months Ended
	Dec. 29, 2013
Disclosure Text Block Supplement [Abstract]	'
Schedule Of Amortization Expense [Table Text Block]	'
		Three Months Ended				Nine Months Ended
		December29,		December30,		December29,		December30,
		2013		2012		2013		2012
	Amortization expense	$	800	$	818	$	2,494	$	2,659
Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]	'
	Fiscal Years	Design Tools
	2014 (3 months remaining)	$	370
	2015		1,456
	2016		59
	2017		10
	2018 and thereafter		6
	Total minimum lease payments		1,901
	Less: amount representing interest		95
	Present value of minimum lease payments		1,806
	Less: short-term lease financing obligations		1,700
	Long-term lease financing obligations	$	106
Schedule of Interest Expense [Table Text Block]	'
		Three Months Ended				Nine Months Ended
		December29,		December30,		December29,		December30,
		2013		2012		2013		2012
	Interest expense	$	39	$	35	$	115	$	107
Schedule of Rent Expense [Table Text Block]	'
		Three Months Ended				Nine Months Ended
		December29,		December30,		December29,		December30,
		2013		2012		2013		2012
	Rent expense	$	229	$	149	$	658	$	456
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	'
	Fiscal Years	Facilities
	2014 (3 months remaining)	$	200
	2015		552
	2016		461
	2017		150
	2018 and thereafter		20
	Total minimum lease payments	$	1,383

Note_14_Commitments_and_Contin1

Note 14 - Commitments and Contingencies (Tables)	9 Months Ended
	Dec. 29, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Schedule of Remediation Liabilities [Table Text Block]	'
		December29,			March 31,
		2013			2013
	Liabilities for remediation activities	$	31		$	76
Schedule of Product Warranty Liability [Table Text Block]	'
		December 29,			March 31,
		2013			2013
	Beginning balance	$	50		$	90
	Provisions for warranties issued		1,440		─
	Settlements/adjustments		(328	)		(40	)
	Ending balance	$	1,162		$	50

Note_16_Income_Taxes_Tables

Note 16 - Income Taxes (Tables)	9 Months Ended
	Dec. 29, 2013
Income Tax Disclosure [Abstract]	'
Schedule Of Interest And Penalty Realted To Underpayment Of Tax [Table Text Block]	'
		December 29,		March 31,
		2013		2013
	Accrued interest and penalties	$	97	$	228

Note_17_Segment_and_Geographic1

Note 17 - Segment and Geographic Information (Tables)	9 Months Ended
	Dec. 29, 2013
Segment Reporting [Abstract]	'
Schedule of Segment Reporting Information, by Segment [Table Text Block]	'
		Three Months Ended				Nine Months Ended
		December29,		December30,		December29,		December30,
		2013		2012		2013		2012
	Industrial & Embedded Systems	$	18,429	$	16,119	$	52,870	$	48,130
	Networking & Storage		7,104		9,300		27,284		23,391
	Communications Infrastructure		5,089		5,270		16,762		18,735
	Other		68		310		419		616
	Total net sales	$	30,690	$	30,999	$	97,335	$	90,872
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]	'
		Three Months Ended				Nine Months Ended
		December29,		December30,		December29,		December30,
		2013		2012		2013		2012
	China	$	11,566	$	10,749	$	33,860	$	31,458
	United States		9,285		8,711		31,325		22,987
	Singapore		3,138		3,245		10,068		10,561
	Germany		2,456		2,662		8,124		8,865
	Japan		1,575		1,499		4,415		4,367
	Europe (excluding Germany)		907		1,111		2,431		3,654
	Rest of world		1,763		3,022		7,112		8,980
	Total net sales	$	30,690	$	30,999	$	97,335	$	90,872
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]	'
		Three Months Ended				Nine Months Ended
		December29,		December 30,		December29,		December 30,
		2013		2012		2013		2012
	Distributor A	26	%	28	%	26	%	30	%
	Distributor B	21	%	10	%	23	%	10	%
	Distributor C	13	%	10	%	11	%	10	%
	Customer A	*		12	%	*		*
Schedule Of Major Distributors [Table Text Block]	'
		December29,		March 31,
		2013		2013
	Distributor A		*		21%
	Distributor B		45%		20%
	Distributor D		*		11%

Note_18_Assets_Held_For_Sale_T

Note 18 - Assets Held For Sale (Tables)	9 Months Ended
	Dec. 29, 2013
Disclosure Text Block Supplement [Abstract]	'
Disclosure of Long Lived Assets Held-for-sale [Table Text Block]	'
		December29,
		2013
	Land	$	6,660
	Building		6,423
	Total assets held for sale	$	13,083

Note_3_Business_Combinations_D

Note 3 - Business Combinations (Details) (USD $)

3 Months Ended

6 Months Ended

9 Months Ended

0 Months Ended

1 Months Ended

9 Months Ended

12 Months Ended

0 Months Ended

9 Months Ended

1 Months Ended

9 Months Ended

12 Months Ended

Dec. 29, 2013

Dec. 30, 2012

Dec. 29, 2013

Dec. 29, 2013

Dec. 30, 2012

Jul. 05, 2013

Jul. 05, 2013

Mar. 22, 2013

Dec. 29, 2013

Mar. 31, 2013

Jul. 05, 2013

Dec. 29, 2013

Mar. 22, 2013

Dec. 29, 2013

Mar. 31, 2013

Jul. 05, 2013

Mar. 22, 2013

Jul. 05, 2013

Mar. 22, 2013

Prior to Considering Impact on Deferred Tax Assets and Liabilities [Member]

Potential Indemnity Claims [Member]

Potential Indemnity Claims [Member]

Potential Indemnity Claims [Member]

Potential Indemnity Claims [Member]

Cadeka [Member]

Cadeka [Member]

Altior [Member]

Altior [Member]

Altior [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Cadeka [Member]

Cadeka [Member]

Altior [Member]

Cadeka [Member]

Altior [Member]

Cadeka [Member]

Altior [Member]

Note 3 - Business Combinations (Details) [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares)

'

'

'

'

'

'

-15,000

'

'

'

454,000

'

358,000

'

'

'

'

'

'

Business Combination, Consideration Transferred, Equity Interests Issued and Issuable

'

'

'

'

'

'

'

'

'

'

$5,200,000

'

'

'

'

'

'

'

'

Payments to Acquire Businesses, Gross

'

'

'

'

'

'

-1,000,000

-250,000

1,256,000

250,000

25,000,000

25,000,000

1,000,000

1,000,000

'

'

'

'

'

Business Acquisition Potential Cash Payment

'

'

'

'

'

'

'

'

'

'

5,000,000

'

20,000,000

'

'

0

0

5,000,000

20,000,000

Business Acquisition, Equity Interest Issued or Issuable, Value Assigned

'

'

'

'

'

'

'

'

'

'

5,200,000

5,177,000

3,700,000

3,740,000

'

'

'

'

'

Acquired Intangible Assets Discount Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15.00%

12.00%

23.00%

19.00%

Goodwill, Acquired During Period (in Dollars)

'

'

'

'

'

12,400,000

'

'

'

'

19,200,000

19,200,000

7,200,000

'

7,200,000

'

'

'

'

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent

'

'

'

'

'

'

'

'

'

'

6,800,000

'

'

'

'

'

'

'

'

Income Tax Expense (Benefit)

-1,405,000

-1,346,000

-6,800,000

-8,181,000

-1,324,000

'

'

'

'

'

-6,800,000

'

'

'

'

'

'

'

'

Business Combination, Acquisition Related Costs

'

'

'

'

'

'

'

'

'

'

'

$400,000

'

'

'

'

'

'

'

Note_3_Business_Combinations_D1

Note 3 - Business Combinations (Details) - Summary of Consideration Paid (USD $)	0 Months Ended	9 Months Ended	1 Months Ended	9 Months Ended
	Jul. 05, 2013	Dec. 29, 2013	Mar. 22, 2013	Dec. 29, 2013
	Cadeka [Member]	Cadeka [Member]	Altior [Member]	Altior [Member]
Note 3 - Business Combinations (Details) - Summary of Consideration Paid [Line Items]	'	'	'	'
Cash	$25,000,000	$25,000,000	$1,000,000	$1,000,000
Equity instruments	5,200,000	5,177,000	3,700,000	3,740,000
Estimated Fair value of earn-out payments	'	4,660,000	'	10,138,000
Total consideration paid	'	$34,837,000	'	$14,878,000

Note_3_Business_Combinations_D2

Note 3 - Business Combinations (Details) - Fair Value Allocated to Tangible and Identifiable Intangible Assets (USD $)	Dec. 29, 2013	Mar. 31, 2013	Apr. 01, 2012	Dec. 29, 2013	Dec. 29, 2013
In Thousands, unless otherwise specified				Altior [Member]	Cadeka [Member]
Note 3 - Business Combinations (Details) - Fair Value Allocated to Tangible and Identifiable Intangible Assets [Line Items]	'	'	'	'	'
Cash	'	'	'	$1,055	'
Accounts Receivable	'	'	'	241	'
Inventories	'	'	'	1,756	126
Property, plant and equipment	'	'	'	231	140
Other assets	'	'	'	3	36
Accounts payable and accruals	'	'	'	-7,400	-24
Other short-term liabilities	'	'	'	-520	-51
Long-term liabilities	'	'	'	-126	-61
Total identifiable tangible assets, net	'	'	'	-4,760	166
Identifiable intangible assets	'	'	'	7,540	20,380
Total identifiable assets, net	'	'	'	7,706	15,620
Goodwill	29,573	10,356	3,184	7,172	19,217
Fair value of total consideration transferred	'	'	'	$14,878	$34,837

Note_3_Business_Combinations_D3

Note 3 - Business Combinations (Details) - Components of Identifiable Intangible Assets (Cadeka [Member], USD $)	Dec. 29, 2013
In Thousands, unless otherwise specified
Acquired Finite-Lived Intangible Assets [Line Items]	'
Identifiable intangible assets	$20,380
Developed Technology Rights [Member]	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
Identifiable intangible assets	15,720
In Process Research and Development [Member]	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
Identifiable intangible assets	2,280
Customer Relationships [Member]	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
Identifiable intangible assets	2,170
Trade Names [Member]	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
Identifiable intangible assets	$210

Note_4_Fair_Value_Details

Note 4 - Fair Value (Details) (USD $)	3 Months Ended
	Dec. 29, 2013	Sep. 29, 2013
Altior [Member]	'	'
Note 4 - Fair Value (Details) [Line Items]	'	'
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Asset	$98,000	$2,500,000
Cadeka [Member]	'	'
Note 4 - Fair Value (Details) [Line Items]	'	'
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Asset	($40,000)	'

Note_4_Fair_Value_Details_Inve

Note 4 - Fair Value (Details) - Investment Assets Measured at Fair Value (USD $)	Dec. 29, 2013	Mar. 31, 2013
In Thousands, unless otherwise specified
Assets:	'	'
Investment Assets	$168,663	$195,629
Liabilities	12,361	'
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Assets:	'	'
Investment Assets	11,537	22,460
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Assets:	'	'
Investment Assets	21,254	19,261
US Government Agencies Debt Securities [Member]	'	'
Assets:	'	'
Investment Assets	32,791	41,721
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Assets:	'	'
Investment Assets	2,798	2,935
US States and Political Subdivisions Debt Securities [Member]	'	'
Assets:	'	'
Investment Assets	2,798	2,935
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Assets:	'	'
Investment Assets	4	274
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Assets:	'	'
Investment Assets	72,721	91,955
Corporate Debt Securities [Member]	'	'
Assets:	'	'
Investment Assets	72,725	92,229
Asset-backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Assets:	'	'
Investment Assets	30,354	30,966
Asset-backed Securities [Member]	'	'
Assets:	'	'
Investment Assets	30,354	30,966
Collateralized Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Assets:	'	'
Investment Assets	16,034	22,736
Collateralized Mortgage Backed Securities [Member]	'	'
Assets:	'	'
Investment Assets	16,034	22,736
Altior [Member] | Fair Value, Inputs, Level 3 [Member]	'	'
Assets:	'	'
Liabilities	7,741	10,138
Altior [Member]	'	'
Assets:	'	'
Liabilities	7,741	10,138
Cadeka [Member] | Fair Value, Inputs, Level 3 [Member]	'	'
Assets:	'	'
Liabilities	4,620	'
Cadeka [Member]	'	'
Assets:	'	'
Liabilities	4,620	'
Fair Value, Inputs, Level 1 [Member]	'	'
Assets:	'	'
Investment Assets	25,502	27,776
Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member]	'	'
Assets:	'	'
Investment Assets	13,961	5,042
Fair Value, Inputs, Level 2 [Member]	'	'
Assets:	'	'
Investment Assets	143,161	167,853
Fair Value, Inputs, Level 3 [Member]	'	'
Assets:	'	'
Liabilities	12,361	'
Money Market Funds [Member]	'	'
Assets:	'	'
Investment Assets	$13,961	$5,042

Note_4_Fair_Value_Details_Quan

Note 4 - Fair Value (Details) - Quantitative Information About the Inputs and Valuation Methodologies (USD $)	Dec. 29, 2013	Mar. 31, 2013
In Thousands, unless otherwise specified
Combination of Income and Marketable Approach [Member] | Altior [Member]	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Acquisition-related contingent consideration – fair value	$7,741	'
Combination of Income and Marketable Approach [Member] | Cadeka [Member]	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Acquisition-related contingent consideration – fair value	4,620	'
Altior [Member]	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Acquisition-related contingent consideration – fair value	7,741	10,138
Cadeka [Member]	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Acquisition-related contingent consideration – fair value	$4,620	'

Note_4_Fair_Value_Details_Chan

Note 4 - Fair Value (Details) - Change in Fair Value of Altior Purchase Consideration Liability (USD $)	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Dec. 29, 2013	Dec. 29, 2013	Dec. 29, 2013	Dec. 29, 2013	Dec. 29, 2013	Mar. 31, 2013	Dec. 29, 2013
			Adjustment to Purchase Consideration [Member]	Adjustment to Purchase Consideration [Member]	Purchase [Member]	Altior [Member]	Altior [Member]	Cadeka [Member]
			Altior [Member]	Cadeka [Member]	Cadeka [Member]
Note 4 - Fair Value (Details) - Change in Fair Value of Altior Purchase Consideration Liability [Line Items]	'	'	'	'	'	'	'	'
Acquisition-related contingent consideration	'	'	'	'	'	$7,741	$10,138	$4,620
Adjustments To Purchase Consideration	$58	($2,437)	($2,397)	($40)	$4,660	'	'	'

Note_4_Fair_Value_Details_Summ

Note 4 - Fair Value (Details) - Summary of Cash, Cash Equivalents and Short-Term Marketable Securities (USD $)	Dec. 29, 2013	Mar. 31, 2013	Dec. 30, 2012	Apr. 01, 2012
In Thousands, unless otherwise specified
Note 4 - Fair Value (Details) - Summary of Cash, Cash Equivalents and Short-Term Marketable Securities [Line Items]	'	'	'	'
Cash at financial institutions	$7,109	$9,676	'	'
Money market funds	13,961	5,042	'	'
Total cash and cash equivalents	21,070	14,718	15,334	8,714
Short-term marketable securities	154,702	190,587	'	'
US Government Agencies Short-term Debt Securities [Member]	'	'	'	'
Note 4 - Fair Value (Details) - Summary of Cash, Cash Equivalents and Short-Term Marketable Securities [Line Items]	'	'	'	'
Short-term marketable securities	32,791	41,721	'	'
US States and Political Subdivisions Debt Securities [Member]	'	'	'	'
Note 4 - Fair Value (Details) - Summary of Cash, Cash Equivalents and Short-Term Marketable Securities [Line Items]	'	'	'	'
Short-term marketable securities	2,798	2,935	'	'
Corporate Debt Securities [Member]	'	'	'	'
Note 4 - Fair Value (Details) - Summary of Cash, Cash Equivalents and Short-Term Marketable Securities [Line Items]	'	'	'	'
Short-term marketable securities	72,725	92,229	'	'
Asset-backed Securities [Member]	'	'	'	'
Note 4 - Fair Value (Details) - Summary of Cash, Cash Equivalents and Short-Term Marketable Securities [Line Items]	'	'	'	'
Short-term marketable securities	30,354	30,966	'	'
Collateralized Mortgage Backed Securities [Member]	'	'	'	'
Note 4 - Fair Value (Details) - Summary of Cash, Cash Equivalents and Short-Term Marketable Securities [Line Items]	'	'	'	'
Short-term marketable securities	$16,034	$22,736	'	'

Note_4_Fair_Value_Details_Net_

Note 4 - Fair Value (Details) - Net Realized Gains (Losses) on Marketable Securities (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Dec. 30, 2012
Net Realized Gains (Losses) on Marketable Securities [Abstract]	'	'	'	'
Gross realized gains	$136	$233	$518	$617
Gross realized losses	-69	-229	-477	-766
Net realized income (losses)	$67	$4	$41	($149)

Note_4_Fair_Value_Details_Summ1

Note 4 - Fair Value (Details) - Summary of Investments in Marketable Securities (USD $)	9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013		Mar. 31, 2013
Schedule of Available-for-sale Securities [Line Items]	'		'
Amortized Cost	$168,788		$195,300
Unrealized Gross Gains	99	[1]	507	[1]
Unrealized Gross Losses	-224	[1]	-178	[1]
Fair Value	168,663		195,629
US Government Corporation And Agencies [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Amortized Cost	32,840		41,694
Unrealized Gross Gains	1	[1]	27	[1]
Unrealized Gross Losses	-50	[1]	'	[1]
Fair Value	32,791		41,721
US States and Political Subdivisions Debt Securities [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Amortized Cost	2,797		2,927
Unrealized Gross Gains	5	[1]	10	[1]
Unrealized Gross Losses	-4	[1]	-2	[1]
Fair Value	2,798		2,935
Corporate Debt Securities [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Amortized Cost	72,730		92,059
Unrealized Gross Gains	60	[1]	215	[1]
Unrealized Gross Losses	-65	[1]	-45	[1]
Fair Value	72,725		92,229
Asset-backed Securities [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Amortized Cost	30,396		30,932
Unrealized Gross Gains	14	[1]	61	[1]
Unrealized Gross Losses	-56	[1]	-27	[1]
Fair Value	30,354		30,966
Collateralized Mortgage Backed Securities [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Amortized Cost	16,064		22,646
Unrealized Gross Gains	19	[1]	194	[1]
Unrealized Gross Losses	-49	[1]	-104	[1]
Fair Value	16,034		22,736
Money Market Funds [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Amortized Cost	13,961		5,042
Unrealized Gross Gains	'	[1]	'	[1]
Unrealized Gross Losses	'	[1]	'	[1]
Fair Value	$13,961		$5,042
[1]	Gross of tax impact

Note_4_Fair_Value_Details_Amor

Note 4 - Fair Value (Details) - Amortized Cost and Estimated Fair Value of Cash Equivalents and Marketable Securities (USD $)	Dec. 29, 2013	Mar. 31, 2013
In Thousands, unless otherwise specified
Amortized Cost and Estimated Fair Value of Cash Equivalents and Marketable Securities [Abstract]	'	'
Less than 1 year	$61,616	$61,011
Less than 1 year	61,615	61,029
Due in 1 to 5 years	107,172	134,289
Due in 1 to 5 years	107,048	134,600
Total	168,788	195,300
Total	$168,663	$195,629

Note_4_Fair_Value_Details_Summ2

Note 4 - Fair Value (Details) - Summary of the Gross Unrealized Losses and Fair Values of Investments (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Mar. 31, 2013
Note 4 - Fair Value (Details) - Summary of the Gross Unrealized Losses and Fair Values of Investments [Line Items]	'	'
Fair Value Less than 12 Months	$89,017	$42,528
Gross Unrealized Losses Less than 12 Months	-166	-98
Fair Value Greater than 12 Months	5,641	5,405
Gross Unrealized Losses Greater than 12 Months	-58	-80
Fair Value Total	94,658	47,933
Gross Unrealized Losses Total	-224	-178
US Government Corporation And Agencies [Member]	'	'
Note 4 - Fair Value (Details) - Summary of the Gross Unrealized Losses and Fair Values of Investments [Line Items]	'	'
Fair Value Less than 12 Months	28,772	'
Gross Unrealized Losses Less than 12 Months	-50	'
Fair Value Total	28,772	'
Gross Unrealized Losses Total	-50	'
US States and Political Subdivisions Debt Securities [Member]	'	'
Note 4 - Fair Value (Details) - Summary of the Gross Unrealized Losses and Fair Values of Investments [Line Items]	'	'
Fair Value Less than 12 Months	1,516	'
Gross Unrealized Losses Less than 12 Months	-4	'
Fair Value Greater than 12 Months	'	404
Gross Unrealized Losses Greater than 12 Months	'	-2
Fair Value Total	1,516	404
Gross Unrealized Losses Total	-4	-2
Corporate Debt Securities [Member]	'	'
Note 4 - Fair Value (Details) - Summary of the Gross Unrealized Losses and Fair Values of Investments [Line Items]	'	'
Fair Value Less than 12 Months	35,179	29,609
Gross Unrealized Losses Less than 12 Months	-65	-42
Fair Value Greater than 12 Months	'	497
Gross Unrealized Losses Greater than 12 Months	'	-3
Fair Value Total	35,179	30,106
Gross Unrealized Losses Total	-65	-45
Asset-backed Securities [Member]	'	'
Note 4 - Fair Value (Details) - Summary of the Gross Unrealized Losses and Fair Values of Investments [Line Items]	'	'
Fair Value Less than 12 Months	15,301	10,008
Gross Unrealized Losses Less than 12 Months	-25	-17
Fair Value Greater than 12 Months	3,467	1,241
Gross Unrealized Losses Greater than 12 Months	-31	-10
Fair Value Total	18,768	11,249
Gross Unrealized Losses Total	-56	-27
Collateralized Mortgage Backed Securities [Member]	'	'
Note 4 - Fair Value (Details) - Summary of the Gross Unrealized Losses and Fair Values of Investments [Line Items]	'	'
Fair Value Less than 12 Months	8,249	2,911
Gross Unrealized Losses Less than 12 Months	-22	-39
Fair Value Greater than 12 Months	2,174	3,263
Gross Unrealized Losses Greater than 12 Months	-27	-65
Fair Value Total	10,423	6,174
Gross Unrealized Losses Total	($49)	($104)

Note_5_Goodwill_and_Intangible2

Note 5 - Goodwill and Intangible Assets (Details) (USD $)

9 Months Ended

0 Months Ended

9 Months Ended

1 Months Ended

12 Months Ended

9 Months Ended

In Millions, unless otherwise specified

Dec. 29, 2013

Jul. 05, 2013

Dec. 29, 2013

Mar. 22, 2013

Mar. 31, 2013

Dec. 29, 2013

Dec. 29, 2013

Dec. 29, 2013

Dec. 29, 2013

Dec. 29, 2013

Dec. 29, 2013

Dec. 29, 2013

Dec. 29, 2013

Cadeka [Member]

Cadeka [Member]

Altior [Member]

Altior [Member]

Distributor Relationships [Member]

Trade Names [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Existing Technology [Member]

Patented Technology [Member]

Customer Relationships [Member]

Existing Technology [Member]

Patented Technology [Member]

Customer Relationships [Member]

Note 5 - Goodwill and Intangible Assets (Details) [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of Reportable Segments

1

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill, Acquired During Period (in Dollars)

'

$19.20

$19.20

$7.20

$7.20

'

'

'

'

'

'

'

'

Finite-Lived Intangible Asset, Useful Life

'

'

'

'

'

'6 years

'3 years

'2 years

'5 years

'5 years

'9 years

'6 years

'7 years

Note_5_Goodwill_and_Intangible3

Note 5 - Goodwill and Intangible Assets (Details) - Changes in the Carrying Amount of Goodwill (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Mar. 31, 2013
Changes in the Carrying Amount of Goodwill [Abstract]	'	'
Balance	$10,356	$3,184
Goodwill additions	19,217	7,172
Balance	$29,573	$10,356

Note_5_Goodwill_and_Intangible4

Note 5 - Goodwill and Intangible Assets (Details) - Purchased Intangible Assets (USD $)	Dec. 29, 2013	Mar. 31, 2013
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]	'	'
Carrying Amount	$68,596	$50,486
Accumulated Amoritzation	-42,813	-37,148
Net Carrying Amount	25,783	13,338
Total	70,876	50,486
Total	-42,813	-37,148
Total	28,063	13,338
Research and Development [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
In-process research and development	2,280	'
Existing Technology [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Carrying Amount	58,588	42,858
Accumulated Amoritzation	-35,647	-30,668
Net Carrying Amount	22,941	12,190
Customer Relationships [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Carrying Amount	5,075	2,905
Accumulated Amoritzation	-2,539	-2,079
Net Carrying Amount	2,536	826
Patents [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Carrying Amount	3,459	3,459
Accumulated Amoritzation	-3,328	-3,182
Net Carrying Amount	131	277
Distributor Relationships [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Carrying Amount	1,264	1,264
Accumulated Amoritzation	-1,264	-1,219
Net Carrying Amount	'	45
Trade Names [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Carrying Amount	210	'
Accumulated Amoritzation	-35	'
Net Carrying Amount	$175	'

Note_5_Goodwill_and_Intangible5

Note 5 - Goodwill and Intangible Assets (Details) - Aggregate Amortization Expenses for Purchased Intangible Assets (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Dec. 30, 2012
Aggregate Amortization Expenses for Purchased Intangible Assets [Abstract]	'	'	'	'
Amortization expense	$1,991	$994	$5,665	$3,155

Note_5_Goodwill_and_Intangible6

Note 5 - Goodwill and Intangible Assets (Details) - Estimated Future Amortization Expenses for Purchased Intangible Assets (USD $)	Dec. 29, 2013	Mar. 31, 2013
In Thousands, unless otherwise specified
Amortization Expense (by fiscal year)	'	'
2014 (3 months remaining)	$1,991	'
2015	6,039	'
2016	4,863	'
2017	3,449	'
2018	3,255	'
2019 and thereafter	6,186	'
Total future amortization	$25,783	$13,338

Note_6_LongTerm_Investment_Det

Note 6 - Long-Term Investment (Details) (USD $)	12 Months Ended			3 Months Ended
	Mar. 31, 2013	Dec. 29, 2013	Apr. 01, 2012	Dec. 29, 2013	Jul. 01, 2012
				Skypoint Fund [Member]	Skypoint Fund [Member]
Note 6 - Long-Term Investment (Details) [Line Items]	'	'	'	'	'
Long-term Investments	$1,288,000	$1,263,000	$1,273,000	'	'
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	'	'	'	4,800,000	'
Payments to Acquire Long-term Investments	15,000	'	'	'	15,000
Non-Marketable Equity Investment, Distribution	'	'	'	$25,000	'

Note_6_LongTerm_Investment_Det1

Note 6 - Long-Term Investment (Details) - Long-Term Investments (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Mar. 31, 2013
Long-Term Investments [Abstract]	'	'
Long term investment	$1,288	$1,273
Contributions	'	15
Distributions	-25	'
Long term investment	$1,263	$1,288

Note_7_Related_Party_Transacti2

Note 7 - Related Party Transaction (Details) (USD $)	3 Months Ended		9 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Dec. 30, 2012	Mar. 31, 2013
Note 7 - Related Party Transaction (Details) [Line Items]	'	'	'	'	'
Common Stock, Shares, Outstanding (in Shares)	47,501,051	'	47,501,051	'	46,607,246
Percent of Accounts Receivable	10.00%	'	10.00%	'	'
Operating Leases, Rent Expense (in Dollars)	$229,000	$149,000	$658,000	$456,000	'
Alonim Investments [Member]	'	'	'	'	'
Note 7 - Related Party Transaction (Details) [Line Items]	'	'	'	'	'
Common Stock, Shares, Outstanding (in Shares)	7,600,000	'	7,600,000	'	'
Percentage Of Common Stock Shares Outstanding	16.00%	'	16.00%	'	'
Cadeka [Member]	'	'	'	'	'
Note 7 - Related Party Transaction (Details) [Line Items]	'	'	'	'	'
Operating Leases, Rent Expense (in Dollars)	$34,000	'	$103,000	'	'

Note_7_Related_Party_Transacti3

Note 7 - Related Party Transaction (Details) - Related Party Contributions to Total Net Sales	3 Months Ended		9 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Dec. 30, 2012
Related Party Transaction [Line Items]	'	'	'	'
Alonim	'	'	10.00%	'
Total Net Sales [Member] | Alonim [Member]	'	'	'	'
Related Party Transaction [Line Items]	'	'	'	'
Alonim	29.00%	28.00%	27.00%	30.00%

Note_7_Related_Party_Transacti4

Note 7 - Related Party Transaction (Details) - Related Party Receivables to Net Accounts Receivables	9 Months Ended	12 Months Ended
	Dec. 29, 2013	Mar. 31, 2013
		Net Accounts Receivable [Member]
		Alonim [Member]
Related Party Transaction [Line Items]	'	'
Alonim	10.00%	21.00%

Note_8_Restructuring_Charges_a2

Note 8 - Restructuring Charges and Exit Costs (Details) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

3 Months Ended

In Thousands, unless otherwise specified

Dec. 29, 2013

Mar. 31, 2013

Dec. 30, 2012

Sep. 30, 2012

Jul. 01, 2012

Dec. 29, 2013

Dec. 29, 2013

Dec. 30, 2012

Dec. 29, 2013

Dec. 30, 2012

Mar. 31, 2013

Dec. 29, 2013

Dec. 30, 2012

Dec. 29, 2013

Dec. 30, 2012

Mar. 31, 2013

Dec. 29, 2013

Dec. 29, 2013

Mar. 31, 2013

Cost of Sales [Member]

Cost of Sales [Member]

Cost of Sales [Member]

Cost of Sales [Member]

Cost of Sales [Member]

Operating Expense [Member]

Operating Expense [Member]

Operating Expense [Member]

Operating Expense [Member]

Operating Expense [Member]

Employee Severance [Member]

Facility Closing [Member]

Industrial Research Assistance Program [Member]

Note 8 - Restructuring Charges and Exit Costs (Details) [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restructuring Charges

$100

$300

$600

$300

$900

$1,500

$17

$79

$122

$160

$300

$74

$524

$1,389

$1,619

$1,300

$1,400

$200

($500)

Note_8_Restructuring_Charges_a3

Note 8 - Restructuring Charges and Exit Costs (Details) - Summary of Activities Affecting Liabilities (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Mar. 31, 2013
Restructuring Cost and Reserve [Line Items]	'	'
Beginning balance	$3,286	$8,041
Additions/adjustments	1,511	1,554
Non-cash charges	-4	-56
Payments	-2,786	-6,253
Ending balance	2,007	3,286
Lease Contract Termination Costs [Member]	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Beginning balance	2,860	5,235
Additions/adjustments	158	6
Non-cash charges	-4	-56
Payments	-1,581	-2,325
Ending balance	1,433	2,860
Employee Severance [Member]	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Beginning balance	426	2,806
Additions/adjustments	1,353	1,548
Payments	-1,205	-3,928
Ending balance	$574	$426

Note_9_Balance_Sheet_Detail_De

Note 9 - Balance Sheet Detail (Details) - Inventories (USD $)	Dec. 29, 2013	Mar. 31, 2013
In Thousands, unless otherwise specified
Inventories [Abstract]	'	'
Work-in-process and raw materials	$14,454	$9,981
Finished goods	10,496	9,449
Total inventories	$24,950	$19,430

Note_9_Balance_Sheet_Detail_De1

Note 9 - Balance Sheet Detail (Details) - Property, Plant and Equipment (USD $)	Dec. 29, 2013	Mar. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Property, Plant, and Equipment, Gross	$58,973	$82,708
Accumulated depreciation and amortization	-50,189	-58,608
Total property, plant and equipment, net	8,784	24,100
Land [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, Plant, and Equipment, Gross	'	6,660
Building [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, Plant, and Equipment, Gross	860	16,224
Machinery and Equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, Plant, and Equipment, Gross	40,736	42,258
Software and Software Development Costs [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, Plant, and Equipment, Gross	$17,377	$17,566

Note_9_Balance_Sheet_Detail_De2

Note 9 - Balance Sheet Detail (Details) - Other Current Liabilities (USD $)	9 Months Ended	12 Months Ended
	Dec. 29, 2013	Mar. 31, 2013
Note 9 - Balance Sheet Detail (Details) - Other Current Liabilities [Line Items]	'	'
Fair value of earn-out liability – short-term	$2,230,000	$2,599,000
Accrued restructuring charges and exit costs	1,957,000	2,020,000
Short-term lease financing obligations	1,700,000	3,189,000
Accrued manufacturing expenses, royalties and licenses	1,669,000	2,370,000
Accrued legal and professional services	866,000	746,000
Accrued sales and marketing expenses	573,000	576,000
Accrual for dispute resolution	'	2,727,000
Other	900,000	738,000
Total other current liabilities	11,151,000	15,215,000
Potential Indemnity Claims [Member]	'	'
Note 9 - Balance Sheet Detail (Details) - Other Current Liabilities [Line Items]	'	'
Purchase consideration holdback	$1,256,000	$250,000

Note_9_Balance_Sheet_Detail_De3

Note 9 - Balance Sheet Detail (Details) - Other Noncurrent Obligations (USD $)	Dec. 29, 2013	Mar. 31, 2013
In Thousands, unless otherwise specified
Other Noncurrent Obligations [Abstract]	'	'
Fair value of earn-out liability – long–term	$10,131	$7,539
Long-term taxes payable	749	2,225
Accrued restructuring charges and exit costs	14	1,266
Other	636	174
Total other non-current obligations	$11,530	$11,204

Note_10_Net_Income_Loss_Per_Sh2

Note 10 - Net Income (Loss) Per Share (Details) (Stock Options and RSUs [Member])	3 Months Ended	9 Months Ended
In Millions, unless otherwise specified	Dec. 30, 2012	Dec. 29, 2013	Dec. 30, 2012
Stock Options and RSUs [Member]	'	'	'
Note 10 - Net Income (Loss) Per Share (Details) [Line Items]	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	3.2	1.1	3.8

Note_10_Net_Income_Loss_Per_Sh3

Note 10 - Net Income (Loss) Per Share (Details) - Summary of Net Income (Loss) per Share (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Dec. 30, 2012
Summary of Net Income (Loss) per Share [Abstract]	'	'	'	'
Net income (loss) (in Dollars)	($1,634)	$1,523	$5,654	$1,210
Shares used in computation of net income (loss) per share:	'	'	'	'
Basic	47,529	45,925	47,277	46,228
Effect of options and awards	'	513	1,538	395
Diluted	47,529	46,438	48,815	46,623
Net income (loss) per share	'	'	'	'
Basic (in Dollars per share)	($0.03)	$0.03	$0.12	$0.03
Diluted (in Dollars per share)	($0.03)	$0.03	$0.12	$0.03

Note_11_Common_Stock_Repurchas2

Note 11 - Common Stock Repurchases (Details) (USD $)	0 Months Ended	1 Months Ended	6 Months Ended	3 Months Ended	9 Months Ended
In Millions, unless otherwise specified	Jul. 09, 2013	Aug. 28, 2007	Dec. 29, 2013	Dec. 29, 2013	Dec. 29, 2013
			August 2007 Repurchase Plan [Member]	July 2013 Repurchase Program [Member]	July 2013 Repurchase Program [Member]
Note 11 - Common Stock Repurchases (Details) [Line Items]	'	'	'	'	'
Stock Repurchase Program, Authorized Amount	$50	$100	'	'	'
Stock Repurchased During Period, Value	'	'	92.2	2	4
Stock Repurchase Program, Remaining Authorized Repurchase Amount	'	'	$57.80	'	'

Note_11_Common_Stock_Repurchas3

Note 11 - Common Stock Repurchases (Details) - Stock repurchase activities (USD $)	9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 29, 2013
Note 11 - Common Stock Repurchases (Details) - Stock repurchase activities [Line Items]	'
Repurchases for nine months (in Dollars)	$4,000
Repurchases [Member]	'
Note 11 - Common Stock Repurchases (Details) - Stock repurchase activities [Line Items]	'
Average Price Paid Per Share (or Unit) (in Dollars per share)	$12.94
Repurchases for nine months	309
Repurchases for nine months (in Dollars per share)	$12.94
Repurchases for nine months (in Dollars)	4,000
Average Price Paid Per Share (or Unit) (in Dollars per share)	$12.94
Beginning Balance [Member]	'
Note 11 - Common Stock Repurchases (Details) - Stock repurchase activities [Line Items]	'
Total number of Shares Purchased	9,564
Average Price Paid Per Share (or Unit) (in Dollars per share)	$9.22
Amount Paid for Purchase (in Dollars)	88,189
Repurchases for nine months (in Dollars per share)	$9.22
Average Price Paid Per Share (or Unit) (in Dollars per share)	$9.22
Ending Balance [Member]	'
Note 11 - Common Stock Repurchases (Details) - Stock repurchase activities [Line Items]	'
Average Price Paid Per Share (or Unit) (in Dollars per share)	$9.34
Repurchases for nine months (in Dollars per share)	$9.34
Total number of Shares Purchased	9,873
Average Price Paid Per Share (or Unit) (in Dollars per share)	$9.34
Amount Paid for Purchase (in Dollars)	$92,189

Note_12_StockBased_Compensatio2

Note 12 - Stock-Based Compensation (Details) (USD $)

9 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

0 Months Ended

Dec. 29, 2013

Dec. 30, 2012

Jan. 31, 2012

Dec. 29, 2013

Dec. 30, 2012

Dec. 29, 2013

Dec. 30, 2012

Dec. 29, 2013

Mar. 31, 2013

Dec. 29, 2013

Dec. 29, 2013

Mar. 31, 2012

Dec. 29, 2013

Dec. 30, 2012

Dec. 29, 2013

Dec. 30, 2012

Dec. 29, 2013

Dec. 29, 2013

Dec. 29, 2013

Sep. 15, 2010

Dec. 29, 2013

Employee Stock Option [Member]

Employee Stock Option [Member]

Employee Stock Option [Member]

Employee Stock Option [Member]

Employee Stock Option [Member]

Employee Stock Option [Member]

Employee Stock Option [Member]

Restricted Stock Units (RSUs) [Member]

Restricted Stock Units (RSUs) [Member]

Restricted Stock Units (RSUs) [Member]

Restricted Stock Units (RSUs) [Member]

Restricted Stock Units (RSUs) [Member]

Restricted Stock Units (RSUs) [Member]

Restricted Stock Units (RSUs) [Member]

Restricted Stock Units (RSUs) [Member]

Restricted Stock Units (RSUs) [Member]

Restricted Stock Units (RSUs) [Member]

Equity Incentive Plans [Member]

Equity Incentive Plans [Member]

Chief Executive Officer [Member]

Chief Executive Officer [Member]

Chief Executive Officer [Member]

Chief Executive Officer [Member]

Chief Executive Officer [Member]

Executive Management Incentive Program [Member]

Executive Management Incentive Program [Member]

Chief Executive Officer [Member]

Chief Executive Officer [Member]

Chief Executive Officer [Member]

Chief Executive Officer [Member]

Chief Executive Officer [Member]

Executives[Member]

Executives[Member]

Note 12 - Stock-Based Compensation (Details) [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent

95.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Stock-Based Compensation Equity Incentive Plans

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in Shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,500,000

'

Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)

4,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8,300,000

'

Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,000,000

Share Price (in Dollars per share)

'

'

'

'

'

'

'

$11.63

$10.50

'

'

'

'

'

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)

1,460,300

'

480,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share-based Compensation

$7,267,000

$3,010,000

'

$65,000

$65,000

$195,000

$195,000

'

'

$200,000

$1,500,000

'

$119,000

$112,000

$641,000

$336,000

$91,000

$239,000

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)

'

'

'

'

'

'

'

'

'

'

'

300,000

'

'

'

'

'

50,000

469,995

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period

'

'

'

'

'

'

'

'

'

'

'

'3 years

'

'

'

'

'

'3 years

'

'

'

Note_12_StockBased_Compensatio3

Note 12 - Stock-Based Compensation (Details) - Summary of ESPP Transactions (USD $)	9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 29, 2013
Summary of ESPP Transactions [Abstract]	'
Authorized to issue	4,500
Reserved for future issuance	1,379
Issued	13
Issued (in Dollars per share)	$11.47

Note_12_StockBased_Compensatio4

Note 12 - Stock-Based Compensation (Details) - Summary of Stock Option Transactions (USD $)	9 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 29, 2013	Mar. 31, 2013
Summary of Stock Option Transactions [Abstract]	'	'
Options outstanding	'	6,212,333
Weighted Average Exercise Price of Options Outstanding (in Dollars per share)	'	$7.48
Weighted Average Remaining Contractual Term of Options Outstanding	'5 years 25 days	'5 years 14 days
Aggregate Intrinsic Value (in Dollars)	'	$19,199
In the Money Options Vested and Exercisable	'	1,481,000
Granted	1,460,300	'
Granted (in Dollars per share)	$12.38	'
Exercised	-535,832	'
Exercised (in Dollars per share)	$7.12	'
Forfeited	-522,341	'
Forfeited (in Dollars per share)	$7.89	'
Cancelled	-10,834	'
Cancelled (in Dollars per share)	$10.92	'
Vested and expected to vest, December 29, 2013	6,184,803	'
Vested and expected to vest, December 29, 2013 (in Dollars per share)	$8.46	'
Vested and expected to vest, December 29, 2013	'5 years	'
Vested and expected to vest, December 29, 2013 (in Dollars)	21,073	'
Vested and exercisable, December 29, 2013	2,197,258	'
Vested and exercisable, December 29, 2013 (in Dollars per share)	$7.40	'
Vested and exercisable, December 29, 2013	'3 years 244 days	'
Vested and exercisable, December 29, 2013 (in Dollars)	9,544	'
Options outstanding	6,603,626	'
Weighted Average Exercise Price of Options Outstanding (in Dollars per share)	$8.56	'
Aggregate Intrinsic Value (in Dollars)	$21,985	'
In the Money Options Vested and Exercisable	2,062,000	'

Note_12_StockBased_Compensatio5

Note 12 - Stock-Based Compensation (Details) - Options Exercised (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Dec. 30, 2012
Options Exercised [Abstract]	'	'	'	'
Intrinsic value of options exercised	$805	$304	$2,699	$879

Note_12_StockBased_Compensatio6

Note 12 - Stock-Based Compensation (Details) - Summary of RSU Transactions (Restricted Stock Units (RSUs) [Member], USD $)	9 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 29, 2013	Mar. 31, 2013
Restricted Stock Units (RSUs) [Member]	'	'
Note 12 - Stock-Based Compensation (Details) - Summary of RSU Transactions [Line Items]	'	'
Shares	'	732,204
Weighted Average Grant Date Fair Value (in Dollars per share)	'	$7.73
Weighted Average Remaining Contractual Term	'1 year 237 days	'1 year 262 days
Aggregate Intrinsic Value (in Dollars)	'	$7,688
Granted	469,995	'
Granted (in Dollars per share)	$11.83	'
Issued and released	-311,406	'
Issued and released (in Dollars per share)	$9.48	'
Cancelled	-33,666	'
Cancelled (in Dollars per share)	$9.55	'
Vested and expected to vest, December 29, 2013	761,615	'
Vested and expected to vest, December 29, 2013	'1 year 219 days	'
Vested and expected to vest, December 29, 2013 (in Dollars)	8,858	'
Shares	857,127	'
Weighted Average Grant Date Fair Value (in Dollars per share)	$9.27	'
Weighted Average Remaining Contractual Term	'1 year 237 days	'1 year 262 days
Aggregate Intrinsic Value (in Dollars)	$9,968	'

Note_12_StockBased_Compensatio7

Note 12 - Stock-Based Compensation (Details) - Summary Stock-Based Compensation Expense Related to Stock Options and RSUs (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Dec. 30, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	$2,557	$1,489	$7,267	$3,010
Cost of Sales [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	165	175	519	289
Research and Development Expense [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	566	328	1,395	437
Selling, General and Administrative Expenses [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	$1,826	$986	$5,353	$2,284

Note_12_StockBased_Compensatio8

Note 12 - Stock-Based Compensation (Details) - Summary of Unrecognized Stock-Based Compensation Expense Related to Stock Options and RSUs (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013
Note 12 - Stock-Based Compensation (Details) - Summary of Unrecognized Stock-Based Compensation Expense Related to Stock Options and RSUs [Line Items]	'
Total Stock-based compensation expense	$13,502
Employee Stock Option [Member]	'
Note 12 - Stock-Based Compensation (Details) - Summary of Unrecognized Stock-Based Compensation Expense Related to Stock Options and RSUs [Line Items]	'
Options	8,180
Options	'2 years 255 days
RSUs	'2 years 255 days
Restricted Stock Units (RSUs) [Member]	'
Note 12 - Stock-Based Compensation (Details) - Summary of Unrecognized Stock-Based Compensation Expense Related to Stock Options and RSUs [Line Items]	'
Options	'2 years 109 days
RSUs	$5,322
RSUs	'2 years 109 days

Note_12_StockBased_Compensatio9

Note 12 - Stock-Based Compensation (Details) - Weighted Average Assumptions (USD $)	3 Months Ended		9 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Dec. 30, 2012
Note 12 - Stock-Based Compensation (Details) - Weighted Average Assumptions [Line Items]	'	'	'	'
Expected term of options (years)	'4 years 6 months	'4 years 146 days	'	'
Risk-free interest rate	1.01%	0.50%	'	'
Expected volatility	32.00%	41.00%	'	'
Weighted average estimated fair value (in Dollars per share)	$3.74	$2.81	$3.56	$2.76
Minimum [Member]	'	'	'	'
Note 12 - Stock-Based Compensation (Details) - Weighted Average Assumptions [Line Items]	'	'	'	'
Expected term of options (years)	'	'	'4 years 146 days	'4 years 73 days
Risk-free interest rate	'	'	0.60%	0.50%
Expected volatility	'	'	32.00%	41.00%
Maximum [Member]	'	'	'	'
Note 12 - Stock-Based Compensation (Details) - Weighted Average Assumptions [Line Items]	'	'	'	'
Expected term of options (years)	'	'	'4 years 6 months	'4 years 6 months
Risk-free interest rate	'	'	1.12%	0.60%
Expected volatility	'	'	35.00%	42.00%

Note_13_Lease_Financing_Obliga2

Note 13 - Lease Financing Obligations (Details) (USD $)	Jul. 31, 2013	Jul. 31, 2012	Dec. 30, 2011	Oct. 31, 2011	Jun. 30, 2010	Dec. 31, 2009	Jul. 31, 2009	Dec. 29, 2013	Dec. 29, 2013
In Millions, unless otherwise specified								Minimum [Member]	Maximum [Member]
Note 13 - Lease Financing Obligations (Details) [Line Items]	'	'	'	'	'	'	'	'	'
Capital Lease Obligations	$0.20	$0.90	$4.50	$5.80	$1	$1.30	$1.10	'	'
Capital Lease License Term	'29 months	'3 years	'3 years	'3 years	'3 years	'28 months	'3 years	'	'
Debt Instrument, Interest Rate, Effective Percentage	'	'	'	'	'	'	'	2.00%	7.25%

Note_13_Lease_Financing_Obliga3

Note 13 - Lease Financing Obligations (Details) - Amortization Expense Related to the Design Tools (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Dec. 30, 2012
Note 13 - Lease Financing Obligations (Details) - Amortization Expense Related to the Design Tools [Line Items]	'	'	'	'
Amortization expense	$1,898	$801	$5,346	$2,578
Design Tools [Member]	'	'	'	'
Note 13 - Lease Financing Obligations (Details) - Amortization Expense Related to the Design Tools [Line Items]	'	'	'	'
Amortization expense	$800	$818	$2,494	$2,659

Note_13_Lease_Financing_Obliga4

Note 13 - Lease Financing Obligations (Details) - Lease financing (USD $)	Dec. 29, 2013	Mar. 31, 2013
In Thousands, unless otherwise specified
Lease financing [Abstract]	'	'
2014 (3 months remaining)	$370	'
2015	1,456	'
2016	59	'
2017	10	'
2018 and thereafter	6	'
Total minimum lease payments	1,901	'
Less: amount representing interest	95	'
Present value of minimum lease payments	1,806	'
Less: short-term lease financing obligations	1,700	3,189
Long-term lease financing obligations	$106	'

Note_13_Lease_Financing_Obliga5

Note 13 - Lease Financing Obligations (Details) - Summary of Interest Expense (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Dec. 30, 2012
Note 13 - Lease Financing Obligations (Details) - Summary of Interest Expense [Line Items]	'	'	'	'
Interest expense	$39	$56	$117	$128
Design Tools [Member]	'	'	'	'
Note 13 - Lease Financing Obligations (Details) - Summary of Interest Expense [Line Items]	'	'	'	'
Interest expense	$39	$35	$115	$107

Note_13_Lease_Financing_Obliga6

Note 13 - Lease Financing Obligations (Details) - Summary of Rent Expense (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Dec. 30, 2012
Summary of Rent Expense [Abstract]	'	'	'	'
Rent expense	$229	$149	$658	$456

Note_13_Lease_Financing_Obliga7

Note 13 - Lease Financing Obligations (Details) - Operating lease (USD $)	Dec. 29, 2013
In Thousands, unless otherwise specified
Operating lease [Abstract]	'
2014 (3 months remaining)	$200
2015	552
2016	461
2017	150
2018 and thereafter	20
Total minimum lease payments	$1,383

Note_14_Commitments_and_Contin2

Note 14 - Commitments and Contingencies (Details) (USD $)	Dec. 29, 2013	Mar. 31, 2013	Apr. 01, 2012
In Thousands, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]	'	'	'
Product Warranty Accrual	$1,162	$50	$90

Note_14_Commitments_and_Contin3

Note 14 - Commitments and Contingencies (Details) - Outstanding Liabilities for Remediation Activities, Net of Payments (USD $)	Dec. 29, 2013	Mar. 31, 2013
In Thousands, unless otherwise specified
Outstanding Liabilities for Remediation Activities, Net of Payments [Abstract]	'	'
Liabilities for remediation activities	$31	$76

Note_14_Commitments_and_Contin4

Note 14 - Commitments and Contingencies (Details) - Warranty Reserve Balance (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Mar. 31, 2013
Warranty Reserve Balance [Abstract]	'	'
Beginning balance	$50	$90
Provisions for warranties issued	1,440	'
Settlements/adjustments	-328	-40
Ending balance	$1,162	$50

Note_16_Income_Taxes_Details

Note 16 - Income Taxes (Details) (USD $)	3 Months Ended		6 Months Ended	9 Months Ended		12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013
Note 16 - Income Taxes (Details) [Line Items]	'	'	'	'	'	'
Income Tax Expense (Benefit)	($1,405,000)	($1,346,000)	($6,800,000)	($8,181,000)	($1,324,000)	'
Unrecognized Tax Benefits, Period Increase (Decrease)	-1,400,000	'	'	-1,300,000	'	-1,400,000
Unrecognized Tax Benefits	14,000,000	'	14,000,000	14,000,000	'	14,000,000
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	11,400,000	'	11,400,000	11,400,000	'	11,400,000
Net Operating Loss Carryback Refund [Member]	'	'	'	'	'	'
Note 16 - Income Taxes (Details) [Line Items]	'	'	'	'	'	'
Income Tax Expense (Benefit)	'	-1,300,000	'	'	-1,300,000	'
Unrecognized Tax Benefits, Period Increase (Decrease)	($1,300,000)	'	'	'	'	'
Minimum [Member]	'	'	'	'	'	'
Note 16 - Income Taxes (Details) [Line Items]	'	'	'	'	'	'
Open Tax Year	'2003	'	'	'	'	'
Maximum [Member]	'	'	'	'	'	'
Note 16 - Income Taxes (Details) [Line Items]	'	'	'	'	'	'
Open Tax Year	'2013	'	'	'	'	'

Note_16_Income_Taxes_Details_E

Note 16 - Income Taxes (Details) - Estimated Interest and Penalties Related to the Underpayment of Income Taxes (USD $)	Dec. 29, 2013	Mar. 31, 2013
In Thousands, unless otherwise specified
Estimated Interest and Penalties Related to the Underpayment of Income Taxes [Abstract]	'	'
Accrued interest and penalties	$97	$228

Note_17_Segment_and_Geographic2

Note 17 - Segment and Geographic Information (Details)	3 Months Ended	9 Months Ended
	Dec. 29, 2013	Dec. 29, 2013
Segment Reporting [Abstract]	'	'
Number of Reportable Segments	'	1
Number of Operating Segments	'	1
Concentration Risk, Percentage	'	10.00%
Percent of Accounts Receivable	10.00%	10.00%

Note_17_Segment_and_Geographic3

Note 17 - Segment and Geographic Information (Details) - Net Sales by End Market (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Dec. 30, 2012
Segment Reporting Information [Line Items]	'	'	'	'
Net sales	$30,690	$30,999	$97,335	$90,872
Industrial And Embedded Systems [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Net sales	18,429	16,119	52,870	48,130
Networking And Storage [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Net sales	7,104	9,300	27,284	23,391
Communications Infrastructure [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Net sales	5,089	5,270	16,762	18,735
Other Markets [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Net sales	$68	$310	$419	$616

Note_17_Segment_and_Geographic4

Note 17 - Segment and Geographic Information (Details) - Net Sales by Geographic Area (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Dec. 30, 2012
Note 17 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]	'	'	'	'
Net sales	$30,690	$30,999	$97,335	$90,872
China [Member]	'	'	'	'
Note 17 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]	'	'	'	'
Net sales	11,566	10,749	33,860	31,458
United States [Member]	'	'	'	'
Note 17 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]	'	'	'	'
Net sales	9,285	8,711	31,325	22,987
Singapore [Member]	'	'	'	'
Note 17 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]	'	'	'	'
Net sales	3,138	3,245	10,068	10,561
Germany [Member]	'	'	'	'
Note 17 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]	'	'	'	'
Net sales	2,456	2,662	8,124	8,865
Japan [Member]	'	'	'	'
Note 17 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]	'	'	'	'
Net sales	1,575	1,499	4,415	4,367
Europe (excluding Germany) [Member]	'	'	'	'
Note 17 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]	'	'	'	'
Net sales	907	1,111	2,431	3,654
Rest Of World [Member]	'	'	'	'
Note 17 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]	'	'	'	'
Net sales	$1,763	$3,022	$7,112	$8,980

Note_17_Segment_and_Geographic5

Note 17 - Segment and Geographic Information (Details) - Major Distributors and Customer of Net Revenue	3 Months Ended		9 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Dec. 30, 2012
Revenue, Major Customer [Line Items]	'	'	'	'
Net Revenue	'	'	10.00%	'
Distributor A [Member] | Net Revenue [Member]	'	'	'	'
Revenue, Major Customer [Line Items]	'	'	'	'
Net Revenue	26.00%	28.00%	26.00%	30.00%
Distributor B [Member] | Net Revenue [Member]	'	'	'	'
Revenue, Major Customer [Line Items]	'	'	'	'
Net Revenue	21.00%	10.00%	23.00%	10.00%
Distributor C [Member] | Net Revenue [Member]	'	'	'	'
Revenue, Major Customer [Line Items]	'	'	'	'
Net Revenue	13.00%	10.00%	11.00%	10.00%
Customer A [Member] | Net Revenue [Member]	'	'	'	'
Revenue, Major Customer [Line Items]	'	'	'	'
Net Revenue	'	12.00%	'	'	[1]
[1]	Net sales for this distributor or customer for this period were less than 10% of our net sales.

Note_17_Segment_and_Geographic6

Note 17 - Segment and Geographic Information (Details) - Major Distributors of Net Account Receivables	9 Months Ended		12 Months Ended
	Dec. 29, 2013		Mar. 31, 2013
Note 17 - Segment and Geographic Information (Details) - Major Distributors of Net Account Receivables [Line Items]	'		'
Net Accounts Receivable	10.00%		'
Distributor A [Member] | Accounts Receivable [Member]	'		'
Note 17 - Segment and Geographic Information (Details) - Major Distributors of Net Account Receivables [Line Items]	'		'
Net Accounts Receivable	'		21.00%
Distributor B [Member] | Accounts Receivable [Member]	'		'
Note 17 - Segment and Geographic Information (Details) - Major Distributors of Net Account Receivables [Line Items]	'		'
Net Accounts Receivable	45.00%		20.00%
Distributor D [Member] | Accounts Receivable [Member]	'		'
Note 17 - Segment and Geographic Information (Details) - Major Distributors of Net Account Receivables [Line Items]	'		'
Net Accounts Receivable	'	[1]	11.00%
[1]	Accounts receivable for this distributor for this period were less than 10% of the net account balance.

Note_18_Assets_Held_For_Sale_D

Note 18 - Assets Held For Sale (Details) - Related Assets Reclassified as Held for Sale (USD $)	Sep. 29, 2013
In Thousands, unless otherwise specified
Long Lived Assets Held-for-sale [Line Items]	'
Assets Held For Sale	$13,083
Land [Member]	'
Long Lived Assets Held-for-sale [Line Items]	'
Assets Held For Sale	6,660
Building [Member]	'
Long Lived Assets Held-for-sale [Line Items]	'
Assets Held For Sale	$6,423

Note_19_Subsequent_Events_Deta

Note 19 - Subsequent Events (Details) (Subsequent Event [Member], Stretch [Member], USD $)	0 Months Ended
	Jan. 14, 2014
Subsequent Event [Member] | Stretch [Member]	'
Note 19 - Subsequent Events (Details) [Line Items]	'
Payments to Acquire Businesses, Gross	$10,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	10,000,000
Business Combination, Repayment of Obligations Acquired	$7,200,000