InvenSense 10-K 29 May 14 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 30, 2014	7-May-14	Sep. 27, 2013
Document And Entity Information [Abstract]	'	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	30-Mar-14	'	'
Document Fiscal Year Focus	'2014	'	'
Document Fiscal Period Focus	'FY	'	'
Entity Registrant Name	'InvenSense Inc	'	'
Entity Central Index Key	'0001294924	'	'
Current Fiscal Year End Date	'--03-30	'	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	88,185,669	'
Entity Public Float	'	'	$1,300

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 30, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$26,025	$100,843
Short-term investments	91,307	77,040
Accounts receivable	39,009	30,098
Inventories	73,032	23,762
Prepaid expenses and other current assets	19,587	13,302
Total current assets	248,960	245,045
Property and equipment, net	25,239	8,650
Intangible assets, net	35,360	'
Goodwill	50,952	'
Long-term investments	128,755	22,442
Other assets	5,469	2,957
Total assets	494,735	279,094
Current liabilities:	'	'
Accounts payable	18,964	14,464
Accrued liabilities	14,985	7,753
Total current liabilities	33,949	22,217
Long-term debt	135,583	'
Other long-term liabilities	11,375	6,930
Total liabilities	180,907	29,147
Commitments and contingencies (Note 4)	'	'
Preferred stock:	'	'
Preferred stock, $0.001 par value-20,000 shares authorized, no shares issued and outstanding at March 30, 2014 and March 31, 2013	'	'
Common stock:	'	'
Common stock, $0.001 par value-750,000 shares authorized, 88,332 shares issued and outstanding at March 30, 2014, 84,980 shares issued and outstanding at March 31, 2013	215,958	158,108
Accumulated other comprehensive income (loss)	-38	50
Retained earnings	97,908	91,789
Total stockholders' equity	313,828	249,947
Total liabilities and stockholders' equity	$494,735	$279,094

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 30, 2014	Mar. 31, 2013
In Thousands, except Per Share data, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Preferred stock, par value	$0.00	$0.00
Preferred stock, shares authorized	20,000	20,000
Preferred stock, shares issued	'	'
Preferred stock, shares outstanding	'	'
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	750,000	750,000
Common stock, shares issued	88,332	84,980
Common stock, shares outstanding	88,332	84,980

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Income Statement [Abstract]	'	'	'
Net revenue	$252,533	$208,634	$152,967
Cost of revenue	127,724	97,937	67,571
Gross profit	124,809	110,697	85,396
Operating expenses:	'	'	'
Research and development	48,431	24,648	19,672
Selling, general and administrative	51,344	29,391	18,710
Litigation settlement	15,000	'	'
Total operating expenses	114,775	54,039	38,382
Income from operations	10,034	56,658	47,014
Other income (expense), net:	'	'	'
Interest (expense)	-4,012	-2	-22
Other income, net	167	350	160
Other income (expense), net	-3,845	348	138
Income before income taxes	6,189	57,006	47,152
Income tax provision	70	5,301	10,205
Net income	6,119	51,705	36,947
Net income allocable to convertible preferred stockholders	'	'	20,618
Net income allocable to common stockholders	$6,119	$51,705	$16,329
Net income per share allocable to common stockholders	'	'	'
Basic	$0.07	$0.62	$0.39
Diluted	$0.07	$0.59	$0.37
Weighted average shares outstanding used in computing net income per share allocable to common stockholders:	'	'	'
Basic	86,520	82,738	41,614
Diluted	89,928	87,359	47,011

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Statement Of Income And Comprehensive Income [Abstract]	'	'	'
Net income	$6,119	$51,705	$36,947
Other comprehensive income (loss):	'	'	'
Unrealized gains (losses) on available-for-sale investments, net of tax expense (benefit) of $(48), $28 and $nil in fiscal years 2014, 2013 and 2012, respectively	-88	49	'
Total comprehensive income	$6,031	$51,754	$36,947

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Statement Of Income And Comprehensive Income [Abstract]	'	'	'
Unrealized gains (losses) on available-for-sale investments, tax expense (benefit)	($48)	$28	'

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders' Equity (USD $)	Total	Preferred Stock [Member]	Convertible Preferred Stock [Member]	Common Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]
In Thousands
Beginning Balance at Apr. 03, 2011	$59,141	'	$50,241	$5,762	$1	$3,137
Beginning Balance, shares at Apr. 03, 2011	'	'	29,431	18,005	'	'
Issuance of common stock upon initial public offering, net of offering costs and underwriter commission	67,653	'	'	67,653	'	'
Issuance of common stock upon initial public offering, net of offering costs and underwriter commission, shares	'	'	'	10,000	'	'
Issuance of common stock upon secondary offering, net of offering costs and underwriter commission	7,593	'	'	7,593	'	'
Issuance of common stock upon secondary offering, net of offering costs and underwriter commission, shares	'	'	'	575	'	'
Issuance of preferred stock from exercise of stock warrants	499	'	499	'	'	'
Issuance of preferred stock from exercise of stock warrants, shares	'	'	276	'	'	'
Issuance of common stock from exercise of stock warrants, shares	'	'	'	646	'	'
Conversion of preferred stock to common stock upon initial public offering	'	'	-50,740	50,740	'	'
Conversion of preferred stock to common stock upon initial public offering, shares	'	'	-29,707	50,999	'	'
Issuance of common stock from exercise of stock options	1,356	'	'	1,356	'	'
Issuance of common stock from exercise of stock options, shares	665	'	'	665	'	'
Stock compensation relating to stock options issued to consultants	14	'	'	14	'	'
Stock compensation relating to stock options issued to employees	3,674	'	'	3,674	'	'
Other comprehensive income (loss)	'	'	'	'	'	'
Net income	36,947	'	'	'	'	36,947
Ending Balance at Apr. 01, 2012	176,877	'	'	136,792	1	40,084
Ending Balance, shares at Apr. 01, 2012	'	'	'	80,890	'	'
Issuance of common stock from restricted stock and vesting of restricted stock units, shares	'	'	'	422	'	'
Issuance of common stock from exercise of stock warrants	81	'	'	81	'	'
Issuance of common stock from exercise of stock warrants, shares	'	'	'	299	'	'
Offering costs	22	'	'	22	'	'
Issuance of common stock from exercise of stock options	5,617	'	'	5,617	'	'
Issuance of common stock from exercise of stock options, shares	3,369	'	'	3,369	'	'
Excess tax benefit from stock-based compensation	7,077	'	'	7,077	'	'
Stock compensation relating to stock options issued to employees	8,519	'	'	8,519	'	'
Other comprehensive income (loss)	49	'	'	'	49	'
Net income	51,705	'	'	'	'	51,705
Ending Balance at Mar. 31, 2013	249,947	'	'	158,108	50	91,789
Ending Balance, shares at Mar. 31, 2013	'	'	'	84,980	'	'
Issuance of common stock from restricted stock and vesting of restricted stock units, shares	'	'	'	105	'	'
Issuance of common stock from exercise of stock warrants	'	'	'	'	'	'
Issuance of common stock from exercise of stock warrants, shares	'	'	'	90	'	'
Equity component of the convertible notes issuance	39,280	'	'	39,280	'	'
Equity component of the convertible notes issuance costs	-1,995	'	'	-1,995	'	'
Purchase of convertible note hedges	-39,118	'	'	-39,118	'	'
Issuance of common stock from exercise of stock options	14,410	'	'	14,410	'	'
Issuance of common stock from exercise of stock options, shares	3,221	'	'	3,221	'	'
Repurchase of restricted stock for tax withholding	-1,233	'	'	-1,233	'	'
Repurchase of restricted stock for tax withholding, shares	'	'	'	-64	'	'
Excess tax benefit from stock-based compensation	4,839	'	'	4,839	'	'
Stock compensation relating to stock options issued to employees	16,024	'	'	16,024	'	'
Proceeds from sale of warrant	25,643	'	'	25,643	'	'
Other comprehensive income (loss)	-88	'	'	'	-88	'
Net income	6,119	'	'	'	'	6,119
Ending Balance at Mar. 30, 2014	$313,828	'	'	$215,958	($38)	$97,908
Ending Balance, shares at Mar. 30, 2014	'	'	'	88,332	'	'

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Cash flows from operating activities:	'	'	'
Net income	$6,119	$51,705	$36,947
Adjustments to reconcile net income to net cash provided by (used in) operating activities:	'	'	'
Depreciation	4,492	1,998	1,992
Amortization of intangible assets	2,073	'	'
Loss (gain) on disposal of property and equipment	'	8	-154
Stock-based compensation expense	16,024	8,519	3,688
Deferred income tax assets	-2,337	-348	-699
Tax effect of employee benefit plans	4,839	7,077	'
Excess tax benefit from stock-based compensation	-4,839	-7,077	'
Non-cash interest expense	2,854	'	'
Changes in operating assets and liabilities:	'	'	'
Accounts receivable	-8,911	-18,167	-2,222
Inventories	-44,164	-11,522	2,968
Prepaid expenses and other current assets	-2,699	-9,583	-1,018
Other assets	-1,013	1,006	-1,402
Accounts payable	4,474	7,592	-1,245
Accrued liabilities	11,790	4,062	5,567
Net cash provided by (used in) operating activities	-11,298	35,270	44,422
Cash flows from investing activities:	'	'	'
Acquisition of a business	-99,324	'	'
Purchase of property and equipment	-17,207	-5,076	-2,502
Proceeds from the sale of property and equipment	'	5	188
Sales and maturities of available-for-sale investments	86,233	20,979	15,176
Purchase of available-for-sale investments	-206,949	-116,254	-10,025
Net cash provided by (used in) investing activities	-237,247	-100,346	2,837
Cash flows from financing activities:	'	'	'
Proceeds from debt issuance	175,000	'	'
Debt issuance costs	-5,741	'	'
Payment for purchase of convertible notes hedge	-39,118	'	'
Proceeds from sale of warrants	25,643	'	'
Proceeds from initial public offering and secondary offering, net of underwriter commissions	'	'	77,904
Net proceeds from exercise of warrants	'	81	499
Proceeds from issuance of common stock	14,348	5,617	1,356
Offering costs	'	-471	-2,145
Payments of long-term debt and capital lease obligations	-11	-28	-25
Repurchase of restricted stock for taxes	-1,233	'	'
Excess tax benefit from stock-based compensation	4,839	7,077	'
Net cash provided by financing activities	173,727	12,276	77,589
Net increase (decrease) in cash and cash equivalents	-74,818	-52,800	124,848
Cash and cash equivalents:	'	'	'
Beginning of period	100,843	153,643	28,795
End of period	26,025	100,843	153,643
Supplemental disclosures of cash flow information:	'	'	'
Cash paid for interest	'	2	23
Cash paid for income taxes	183	40	9,078
Noncash investing and financing activities:	'	'	'
Unpaid accounts payable for property and equipment purchased	1,770	1,845	274
Unrealized gain (loss) from available-for-sale investments	-59	77	'
Fixed assets acquired under capital leases	'	'	40
Unpaid accrued liabilities for offering costs incurred	'	'	494
Non-cash warrant exercises	90	150	'
Proceeds from exercise of common stock not received	62	'	'
Conversion of warrants and preferred stock to common stock	'	'	$50,740

Organization_and_Summary_of_Si

Organization and Summary of Significant Accounting Policies	12 Months Ended
	Mar. 30, 2014
Accounting Policies [Abstract]	'
Organization and Summary of Significant Accounting Policies	'
	1	Organization and Summary of Significant Accounting Policies
	Business
	InvenSense, Inc. (“the Company”) was incorporated in California in June 2003 and reincorporated in Delaware in January 2004. The Company designs, develops, markets and sells Micro-Electro-Mechanical Systems (“MEMS”) sensors, such as accelerometers, gyroscopes and microphones for consumer electronics, and is dedicated to bringing the best-in-class size, performance and cost solutions to market. Targeting applications in smartphones and tablets, console and portable video gaming devices, digital still and video cameras, smart TVs (including digital set-top boxes, televisions and multi-media HDDs), navigation devices, toys, and health and fitness accessories, the Company delivers leading solutions based on its advanced multi-axis technology.
	Certain Significant Business Risks and Uncertainties
	The Company participates in the high-technology industry and believes that adverse changes in any of the following areas could have a material effect on the Company’s future financial position, results of operations, or cash flows: reliance on a limited number of primary customers to support the Company’s revenue generating activities; advances and trends in new technologies and industry standards; market acceptance of the Company’s products; development of sales channels; strategic relationships, including key component suppliers; litigation or claims against the Company based on intellectual property, patent, product, regulatory, or other factors; and the Company’s ability to attract and retain employees necessary to support its growth.
	Basis of Consolidation
	The consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles, or GAAP, and include our accounts and the accounts of our wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. The functional currency of each of the Company’s subsidiaries is the U.S. dollar. Foreign currency gains or losses are recorded as other income (expense), net, in the consolidated statements of income. During the fiscal year ended March 30, 2014, foreign currency losses were $260,000. During the fiscal year ended March 31, 2013, foreign currency losses were $51,000. During the fiscal year ended April 1, 2012 foreign currency losses were $43,000.
	Fiscal Year
	The Company’s fiscal year is a 52 or 53 week period ending on the Sunday closest to March 31. The Company’s three most recent fiscal years ended on March 30, 2014 (“fiscal year 2014”), March 31, 2013 (“fiscal year 2013”) and April 1, 2012 (“fiscal year 2012”) were each comprised of 52 weeks.
	Use of Estimates
	The preparation of the Company’s Consolidated Financial Statements and related Notes in conformity with accounting principles generally accepted in the United States of America (U.S. GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the Consolidated Financial Statements and related Notes and the reported amounts of income and expenses during the reporting period. Significant estimates included in the Consolidated Financial Statements and related Notes include income taxes, inventory valuation, stock-based compensation, loss contingencies, warranty reserves, valuation of acquired assets, and valuation of convertible senior notes, including the related convertible notes hedges and warrants. These estimates are based upon information available as of the date of the consolidated financial statements, and actual results could differ from those estimates.
	Cash Equivalents
	The Company considers all highly liquid instruments acquired with a remaining maturity of three months or less when purchased to be cash equivalents. Cash and cash equivalents are stated at cost, which approximates their fair value.
	Available-for-Sale Investments
	Securities with remaining maturities at the time of purchase of greater than three months are considered available for sale investments. If the securities have remaining maturities of less than twelve months from the balance sheet date they are classified as short-term investments in the Company’s consolidated balance sheets; if their maturities exceed twelve months beyond the balance sheet date, they are classified as long-term investments in the Company’s consolidated balance sheets. Available-for-sale securities are carried at fair value with temporary unrealized gains and losses, net of taxes, reported within “accumulated other comprehensive income” in the Company’s consolidated financial statements.
	Available-for-sale investments are considered to be impaired when a decline in fair value is judged to be other than temporary. The Company considers available quantitative and qualitative evidence in evaluating potential impairment of its investments on a quarterly basis. If the cost of an investment exceeds its fair value, management evaluates, among other factors, general market conditions, the duration and extent to which the fair value is less than cost, and the Company’s intent and ability to hold the investment. Once a decline in fair value is determined to be other than temporary, an impairment charge is recorded and a new cost basis in the investment is established. During fiscal 2014, fiscal 2013 and fiscal 2012, the Company did not identify any other than temporary impairments.
	Accounts Receivable
	Trade accounts receivable are recorded at the invoiced amount, net of allowances for doubtful accounts and sales returns and allowances. The allowance for doubtful accounts is based on the Company’s assessment of the collectability of customer accounts. The Company periodically reviews the need for an allowance by considering factors such as historical experience, credit quality, the age of the accounts receivable balances and current economic conditions that may affect a customer’s ability to pay. As a result of the Company’s favorable collection experience and customer concentration, no allowance for doubtful accounts was necessary at March 2014 or March 2013. The reserve for sales returns and allowances is based on specific criteria including agreements to provide rebates and other factors known at the time, as well as estimates of the amount of goods shipped that will be returned. To determine the adequacy of the reserve for sales returns and allowances, the Company analyzes historical experience of actual returns as well as current product return information. During fiscal 2014, fiscal 2013 and fiscal 2012, the Company incurred charges related to its reserve for sales returns and allowances of $134,000, $84,000 and $132,000, respectively. At March 2014 and March 2013, the balances for the reserve for sales returns and allowances were $91,000, and $21,000 , respectively.
	Concentration of Credit Risk
	Financial instruments, which potentially subject the Company to concentrations of credit risk, consist primarily of cash, cash equivalents, investments, advances to vendors, accounts receivable and the Note Hedge (see Note 5). The Company limits exposure to credit loss by placing cash, cash equivalents and investments with major financial institutions within the United States that management assesses to be of high credit quality. The Company periodically reviews the credit worthiness of its customers and generally does not require collateral or other security to support accounts receivable. The Company has not experienced any losses on accounts receivables or on deposits of cash and cash equivalents for fiscal 2014, fiscal 2013 or fiscal 2012.
	At March 30, 2014, three customers accounted for 28%, 19% and 19% of total accounts receivable. At March 2013, four customers accounted for 17%, 12%, 10% and 10% of total accounts receivable. No other customers accounted for more than 10% of total accounts receivable at March 2014 or March 2013.
	For fiscal 2014 one customer accounted for 35% of total net revenue. For fiscal 2013 three customers accounted for 24%, 18% and 11% of total net revenue. For fiscal 2012 three customers accounted for 31%, 15% and 12% of total net revenue. No other customers accounted for more than 10% of total net revenue for fiscal 2014, fiscal 2013 or fiscal 2012.
	Inventories
	Inventories are stated at the lower of cost or market on a first-in, first-out basis. Inventories include finished good parts that may be specialized in nature and subject to obsolescence. The Company periodically reviews the quantities and carrying values of inventories to assess whether the inventories are recoverable. The costs associated with write-downs of inventory for excess quantity and technological obsolescence are charged to cost of revenue as incurred. Actual demand may materially differ from the Company’s projected demand, and this difference could have a material impact on the Company’s gross margin and inventory balances based on additional provisions for excess or obsolete inventory or a benefit from sales of inventory previously written down. Write-down amounts charged (credited) to cost of revenues for fiscal years 2013 and 2012 were $(3.0) million and $2.2 million, respectively. Write-down amounts charged (credited) to cost of revenues for fiscal year 2014 were insignificant.
	Property and Equipment, net
	Property and equipment, net are stated at cost and are depreciated using the straight-line method over the estimated useful lives of the assets. The estimated useful lives are as follows: production equipment and furniture and fixtures—four to five years, lab equipment, computer equipment and software—three to five years, and leasehold improvements—over the shorter of the estimated useful life or the remaining lease term.
	Business Combinations
	The purchase price of an acquisition is allocated to the underlying assets acquired and liabilities assumed based upon their estimated fair values at the date of acquisition. To the extent the purchase price exceeds the fair value of the net identifiable tangible and intangible assets acquired and liabilities assumed, such excess is allocated to goodwill. The Company determines the estimated fair values after review and consideration of relevant information, including discounted cash flows, quoted market prices and estimates made by management. The Company adjusts the preliminary purchase price allocation, as necessary, during the measurement period of up to one year after the acquisition closing date as it obtains more information as to facts and circumstances existing at the acquisition date impacting asset valuations and liabilities assumed. Acquisition-related costs are recognized separately from the acquisition and are expensed as incurred.
	Goodwill
	Goodwill represents the excess of the purchase price of an acquired business over the fair value of the underlying net tangible and intangible assets. Goodwill is evaluated for impairment annually, and whenever events or changes in circumstances indicate the carrying value of goodwill may not be recoverable. Triggering events that may indicate impairment include, but are not limited to, a significant adverse change in customer demand or business climate that could affect the value of goodwill or a significant decrease in expected cash flows.
	Intangible Assets
	Intangible assets consist of developed technology and customer relationships, and in-process research and development resulting from the Company’s acquisition of MEMS microphone business of Analog Devices, Inc. (“ADI”) in the third quarter of fiscal 2014. Acquired intangible assets that are subject to amortization are developed technology and customer relationships and are recorded at cost, net of accumulated amortization. Intangible assets are amortized on a straight-line basis over their estimated useful lives. In-process research and development capitalized during business combination is amortized only after successful completion of project, over the expected useful life.
	Impairment of Long Lived Assets
	The Company regularly reviews the carrying amount of its long-lived assets, including property and equipment and intangible assets, as well as the useful lives, to determine whether indicators of impairment may exist which warrant adjustments to carrying values or estimated useful lives. An impairment loss would be recognized when the sum of the expected future undiscounted net cash flows is less than the carrying amount of the asset. Should impairment exist, the impairment loss would be measured based on the excess of the carrying amount of the asset over the asset’s fair value.
	Warranty
	The Company’s warranty agreements are contract and component specific and can be up to three years for selected components. The Company’s accrual for anticipated warranty costs has declined primarily due to a decline in the historical volume of product returned under the warranty program. The accrual also includes management’s judgment regarding anticipated rates of warranty claims and associated repair costs. The following table summarizes the activity related to the product warranty liability during fiscal 2014, fiscal 2013 and fiscal 2012:
			Fiscal 2014			Fiscal 2013			Fiscal 2012
			(in thousands)
	Beginning balance		$	123		$	361		$	697
	Provision for warranty for the year			59			60			301
	Accruals related to changes in estimate			(71	)		(262	)		(547	)
	Less: actual warranty costs			(31	)		(36	)		(90	)
	Ending balance		$	80		$	123		$	361
	Revenue Recognition
	Revenue from the sale of the Company’s products is recognized when all of the following four criteria are met: (1) persuasive evidence of an arrangement exists; (2) the product has been delivered; (3) the price is fixed or determinable; and (4) collection is reasonably assured. Delivery takes place after the transfer of title which historically has occurred upon shipment of the product unless otherwise stated in the customer agreement.
	For direct customers (i.e., other than distributors), the Company recognizes revenue when title to the product is transferred to the customer, which occurs upon shipment or delivery, depending upon the terms of the customer order.
	The Company primarily enters into sales transactions with distributors in which the distributor is purchasing product for an identified end-customer. For these transactions, the Company recognizes net revenue upon either shipment or delivery to the distributor, depending upon when title transfers under the terms of the order. Pursuant to the terms and conditions contained in the agreement with its distributors, all sales to distributors purchased for an identified end-customer are non-refundable, do not have rights to return product purchases except under the Company’s standard warranty terms, and do not include any price concessions or price protection.
	Research and Development
	Research and development activities are expensed as incurred.
	Stock-Based Compensation
	The Company measures the cost of employee services received in exchange for equity incentive awards, including stock options, based on the grant date fair value of the award. The fair value is estimated using the Black-Scholes option pricing model. The Black-Scholes model requires us to estimate certain key assumptions including future stock price volatility, expected term of the options, risk free rates, and dividend yields. Certain of our stock-based awards contained a market-based condition for vesting; these awards were valued using a Monte Carlo simulation analysis to model and value multiple possible outcomes. The Company also estimates potential forfeiture of equity incentive awards granted and adjust compensation expense accordingly. The estimate of forfeitures is adjusted over the estimated term to the extent that the actual forfeiture rate or expected forfeiture rate is expected to differ from these estimates. The resulting cost is recognized over the period during which the employee is required to provide services in exchange for the award, which is usually the vesting period. The Company recognizes compensation expense over the vesting period using the straight-line method and classify these amounts in the statements of income based on the department to which the related employee is assigned. See Note 6 “Stockholders’ Equity” for a description of our stock-based employee compensation plans and the assumptions the Company uses to calculate the fair value of stock-based employee compensation.
	Income Taxes
	The Company accounts for income taxes in accordance with ASC 740-10 “Income Taxes,” which requires the asset and liability approach and the recognition of taxes payable or receivable for the current year and deferred tax liabilities and assets for future tax consequences of events that have been recognized in the Company’s Consolidated Financial Statements and related Notes or tax returns. The measurement of current and deferred tax liabilities and assets are based on provisions of the enacted laws; the effects of future changes in tax laws or rates are not anticipated. Deferred tax assets are reduced, if necessary, by the amount of any tax benefits that, based on available evidence, are not expected to be realized. Valuation allowances are established when necessary to reduce deferred tax assets to the amount that is more likely than not to be realized.
	ASC 740-10 also prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. ASC 740-10 also provides guidance on de-recognition, classification, interest and penalties, accounting in interim periods, disclosure and transition. The Company’s policy is to recognize interest and penalties related to unrecognized tax benefits in income tax provision.
	Net Income Per Share
	Basic and diluted net income per common share are presented in conformity with the two-class method required for participating securities for the period prior to their conversion upon the Company’s initial public offering (“IPO”) in November 2011, when all preferred shares were converted to common stock.
	Prior to the IPO, holders of the Company’s preferred stock were entitled to receive noncumulative dividends prior to the payment of dividends on shares of the Company’s common stock. In the event a dividend were paid on common stock, the preferred stockholders would have also been entitled to a proportionate share of any such dividend as if they were holders of common stock (on an as-if converted basis).
	Under the two-class method, net income allocable to common stockholders is determined by allocating undistributed earnings, calculated as net income less current period non-cumulative dividends allocable to the preferred stockholders for the period prior to their conversion upon the Company’s IPO. In computing diluted net income attributed to common stockholders, undistributed earnings are reallocated to reflect the potential impact of dilutive securities. Basic net income per common share is computed by dividing the net income allocable to common stockholders by the weighted average number of common shares outstanding during the period, which excludes dilutive unvested restricted stock.
	Diluted net income per share allocable to common stockholders is computed by dividing the net income allocable to common stockholders by the weighted average number of common shares outstanding, including unvested restricted stock, certain preferred stock warrants, (which were converted into common stock warrants at the completion of the Company’s IPO), and potential dilutive common shares assuming the dilutive effect of outstanding stock options and restricted stock units using the treasury stock method.
	The following table presents the calculation of basic and diluted net income per share:
			Fiscal 2014			Fiscal 2013			Fiscal 2012
			(in thousands, except per share data)
	Net income allocable to common stockholders:
Numerator:
Basic:
Net income		$	6,119		$	51,705		$	36,947
Non-cumulative dividends on convertible preferred stock			—			—			(1,915	)
Undistributed earnings allocable to convertible preferred stockholders			—			—			(18,703	)
Net income allocable to common stockholders—basic		$	6,119		$	51,705		$	16,329
Diluted:
Net income		$	6,119		$	51,705		$	36,947
Non-cumulative dividends on convertible preferred stock			—			—			(1,967	)
Undistributed earnings allocable to convertible preferred stockholders			—			—			(17,600	)
Net income allocable to common stockholders—diluted		$	6,119		$	51,705		$	17,380
Denominator:
Basic shares:
Weighted average shares used in computing basic net income per common share			86,520			82,738			41,614
Diluted shares:
Weighted average shares used in computing basic net income per common share			86,520			82,738			41,614
Effect of potentially dilutive securities:
Stock options and unvested restricted stock			3,367			4,445			5,229
Common stock warrants			41			176			168
Weighted average shares used in computing diluted net income per common share			89,928			87,359			47,011
Net income per common share:
Basic		$	0.07		$	0.62		$	0.39
Diluted		$	0.07		$	0.59		$	0.37
The following summarizes the potentially dilutive securities outstanding at the end of each period that were excluded from the computation of diluted net income per common share for the periods presented as their effect would have been antidilutive:
		Fiscal 2014			Fiscal 2013			Fiscal 2012
		(in thousands)
Employee stock options			1,992			4,498			3,365
Unvested restricted stock units			1,338			110			2
Total antidilutive securities			3,330			4,608			3,367
Comprehensive Income
Comprehensive income includes certain changes in equity that are excluded from net income. Specifically, unrealized gains and losses are included in accumulated other comprehensive income. During fiscal 2014, fiscal 2013 and fiscal 2012, comprehensive income included a combination of the current period net income and unrealized gain (loss) on available for sale investments.
Segment Information
The Company operates in one operating segment by designing, developing, manufacturing and marketing linear and mixed-signal integrated circuits. The Chief Executive Officer has been identified as the Chief Operating Decision Maker as defined by Financial Accounting Standards Board’s Accounting Standards Codification (“ASC”) 280 “Segment Reporting”. Enterprise-wide information is provided in accordance with ASC 280. Geographical revenue information is based on the location of our customers’ head offices. Property and equipment information is based on the physical location of the assets at the end of each fiscal period.
Property and equipment by country were as follows:
Country		March 2014			March 2013
		(in thousands)
Taiwan		$	16,902		$	6,190
United States			7,605			2,333
Other			732			127
		$	25,239		$	8,650
Net revenues from unaffiliated customers by country were as follows:
Region		Fiscal 2014			Fiscal 2013			Fiscal 2012
		(in thousands)
Korea		$	112,880		$	69,874		$	39,827
Japan			45,493			65,663			54,754
China			43,796			14,742			11,855
Taiwan			18,737			39,203			34,040
United States			24,681			16,667			11,916
Rest of world			6,946			2,485			575
		$	252,533		$	208,634		$	152,967
Recent Accounting Pronouncements
In July 2013, the FASB issued ASU No. 2013-11, “Presentation of an Unrecognized Tax Benefit when a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists” that will require the presentation of certain unrecognized tax benefits as reductions to deferred tax assets rather than as liabilities in our Consolidated Balance Sheets when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. This standard is effective for fiscal years beginning on or after December 15, 2013, and for interim periods within those fiscal years which will be the Company’s fiscal year 2015. The Company is currently evaluating the impact of this new standard on its Consolidated Financial Statements.
In February 2013, the FASB issued ASU No. 2013-02, “Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income” which adds new disclosure requirements for items reclassified out of accumulated other comprehensive income. ASU No. 2011-02 became effective for fiscal years, and interim periods within those years, beginning after December 15, 2012, which was the Company’s fiscal interim period ended June 30, 2013 of fiscal year 2014, and the adoption did not impact the Company’s financial condition or results of operations.
In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). ASU No. 2014-09 provides guidance that companies will recognize revenue to depict the transfer of goods or services to customers in amounts that reflect the payment to which a company expects to be entitled in exchange for those goods or services. InvenSense will be required to implement the new revenue recognition standard for the first quarter of fiscal year 2018. InvenSense is currently evaluating the impact on its consolidated financial statements.

Cash_Equivalents_and_Available

Cash Equivalents and Available-for-sale Investments	12 Months Ended
	Mar. 30, 2014
Cash And Cash Equivalents [Abstract]	'
Cash Equivalents and Available-for-sale Investments	'
	2	Cash Equivalents and Available-for-sale Investments
	At March 2014, of the $26.0 million of the Company’s cash and cash equivalents, $15.3 million was cash and $10.7 million was cash equivalents invested in money market funds. At March 2014, $9.8 million of the $26.0 million of cash and cash equivalents were held by our foreign subsidiaries. If these funds are needed for our operations in the United States, the Company would be required to accrue and pay U.S. taxes to repatriate these funds. However, the Company’s intent is to indefinitely reinvest these funds outside of the United States, and the Company’s current plans for the foreseeable future do not demonstrate a need to repatriate them to fund U.S. operations. Additionally, as of March 2014, the Company had short-term available-for-sale investments of $91.3 million and long-term available-for-sale investments of $128.8 million totaling $220.1 million which is held in the US entity. Long-term investments as of March 2014 of $128.8 million had scheduled maturities between one and two years from the balance sheet date.
	At March 2013, of the $100.8 million of the Company’s cash and cash equivalents, $77.9 million was cash and $22.9 million was cash equivalents invested in money market funds. At March 2013, $60.7 million of the $100.8 million of cash and cash equivalents were held by our foreign subsidiaries. Additionally, as of March 2013, the Company had short-term available-for-sale investments of $77.0 million and long-term available-for-sale investments of $22.4 million totaling $99.4 million. Long-term investments as of March 2013 of $22.4 million had scheduled maturities between one and five years from the balance sheet date.
	The Company applies the provisions of ASC 820-10, “Fair Value Measurements”. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (i.e., the “exit price”) in an orderly transaction between market participants at the measurement date. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. ASC 820-10 requires disclosure that establishes a framework for measuring fair value and expands disclosure about fair value measurements. The standard describes a fair value hierarchy based on three levels of inputs that may be used to measure fair value. The inputs for the first two levels are considered observable and the last is unobservable and include the following:
	Level 1—Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities;
	Level 2—Quoted prices in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liability; or
	Level 3—Unobservable inputs in which there is little or no market data, and as a result, prices or valuation techniques are employed that require inputs that are significant to the fair value measurement.
	This hierarchy requires the Company to use observable market data, when available, and to minimize the use of unobservable inputs when determining fair value. On a recurring basis, the Company measures certain financial assets and liabilities at fair value. The fair values of our money market funds were derived from quoted market prices as active markets for these instruments exist. The Company chose not to elect the fair value option as prescribed by ASC 825-10-05 “Fair Value Option” for its financial assets and liabilities that had not been previously carried at fair value. Therefore, financial assets and liabilities not carried at fair value, such as accounts payable, are still reported at their carrying values.
	Fair value measurements at each reporting date were as follows:
	March 2014:
	Assets measured at fair value on a recurring basis were presented in the Company’s consolidated balance sheet as of March 30, 2014.
			March 2014		Quoted Prices		Significant			Significant
			Balance		in  Active		Other			Other
					Markets for		Observable			Unobservable
					Identical		Inputs			Inputs
					Assets Level 1		Level 2			Level 3
			(in thousands)
	Money Market Funds		$	10,657	$	10,657	$	—		$	—
	Corporate Notes and Bonds			204,683		—		204,683			—
	Municipal Notes and Bonds			3,895		—		3,895			—
	Commercial Paper			8,988		—		8,988			—
	U.S. Agency Securities			2,496		—		2,496			—
	Total		$	230,719	$	10,657	$	220,062		$	—
	Cash equivalents		$	10,657	$	10,657	$	—		$	—
	Short-term investments			91,307		—		91,307			—
	Long-term investments			128,755		—		128,755			—
	Total		$	230,719	$	10,657	$	220,062		$	—
			Mar-14		Gross		Gross			Mar-14
			Amortized Cost		Unrealized		Unrealized			Estimated FMV
					Gain		Loss
			(in thousands)
	Corporate Notes and Bonds		$	204,747	$	—	$	(64	)	$	204,683
	Municipal Notes and Bonds			3,888		7		—			3,895
	Commercial Paper			8,986		2		—			8,988
	U.S. Agency Securities			2,500		—		(4	)		2,496
	Total Available-for-sale investments		$	220,121	$	9	$	(68	)	$	220,062
	Cash equivalents										10,657
	Total Aggregate Fair Value									$	230,719
	The fair values of money market funds were derived from quoted market prices as active markets for these instruments exist. The fair values of corporate notes and bonds, commercial paper, and U.S. Agency Securities were derived from non-binding market consensus prices that are corroborated by observable market data.
	There were no transfers of assets measured at fair value between Level 1 and Level 2 during fiscal 2014.
	March 2013:
	Assets measured at fair value on a recurring basis were presented in the Company’s consolidated balance sheet as of March 31, 2013.
			March 2013		Quoted Prices		Significant			Significant
			Balance		in  Active		Other			Other
					Markets for		Observable			Unobservable
					Identical		Inputs			Inputs
					Assets Level 1		Level 2			Level 3
			(in thousands)
	Money Market Funds		$	22,860	$	22,860	$	—		$	—
	Corporate Notes and Bonds			94,485		—		94,485			—
	Commercial Paper			2,998		—		2,998			—
	U.S. Agency Securities			1,999		—		1,999			—
	Total		$	122,342	$	22,860	$	99,482		$	—
	Cash equivalents		$	22,860	$	22,860	$	—		$	—
	Short-term investments			77,040		—		77,040			—
	Long-term investments			22,442		—		22,442			—
	Total		$	122,342	$	22,860	$	99,482		$	—
			Mar-13		Gross		Gross			Mar-13
			Amortized Cost		Unrealized		Unrealized			Estimated FMV
					Gain		Loss
			(in thousands)
	Corporate Notes and Bonds		$	94,407	$	78	$	—		$	94,485
	Commercial Paper			2,997		1		—			2,998
U.S. Agency Securities			2,001		—		(2	)		1,999
Total Available-for-sale investments		$	99,405	$	79	$	(2	)	$	99,482
Cash equivalents										22,860
Total Aggregate Fair Value									$	122,342
The fair values of money market funds were derived from quoted market prices as active markets for these instruments exist. The fair values of corporate notes and bonds, commercial paper, and U.S. Agency Securities were derived from non-binding market consensus prices that are corroborated by observable market data.
There were no transfers of assets measured at fair value between Level 1 and Level 2 during the twelve months ended March 31, 2013.

Balance_Sheet_Details

Balance Sheet Details	12 Months Ended
	Mar. 30, 2014
Organization Consolidation And Presentation Of Financial Statements [Abstract]	'
Balance Sheet Details	'
	3	Balance Sheet Details
	Inventories
	Inventories at March 2014 and March 2013 consist of the following:
			March 2014			March 2013
			(in thousands)
	Work in progress		$	58,641		$	18,803
	Finished goods			14,391			4,959
	Total Inventories		$	73,032		$	23,762
	Prepaid Expenses and Other Current Assets
	Prepaid expenses and other current assets at March 2014 and March 2013 consist of the following:
			March 2014			March 2013
			(in thousands)
	Prepaid expenses		$	3,495		$	2,209
	Tax receivable			5,932			6,374
	Other receivables			5,356			87
	Deferred tax assets			2,487			951
	Advance to vendors			1,026			2,824
	Other current assets			1,291			857
	Total prepaid expenses and other current assets		$	19,587		$	13,302
	Property and Equipment
	Property and equipment at March 2014 and March 2013 consist of the following:
			March 2014			March 2013
			(in thousands)
	Production and lab equipment		$	25,890		$	11,654
	Computer equipment and software			4,335			1,124
	Equipment under construction			2,298			1,851
	Leasehold improvements and furniture and fixtures			3,918			923
	Subtotal		$	36,441		$	15,552
	Accumulated depreciation			(11,202	)		(6,902	)
	Property and equipment, net		$	25,239		$	8,650
	Depreciation expense was $4.5 million, $2.0 million and $2.0 million for fiscal 2014, 2013, and 2012, respectively. Equipment under construction consists primarily of production and lab equipment. Equipment under construction is not subject to depreciation until it is available for its intended use. All of the equipment under construction is expected to be completed and placed in service by the end of fiscal 2015.
	Accrued Liabilities
	Accrued liabilities at March 2014 and March 2013 consist of the following:
			March 2014			March 2013
			(in thousands)
	Payroll-related expenses		$	4,207		$	2,777
	Bonuses			3,019			2,120
	Legal fees			2,527			884
	Accrued contractual coupon interest payable on convertible senior notes			1,158			—
	Deferred revenue			800			—
	Income tax payable			117			96
	Other accrued liabilities			3,157			1,876
	Total accrued liabilities		$	14,985		$	7,753

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Mar. 30, 2014
Commitments And Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	4	Commitments and Contingencies
	Operating Lease Obligations
	The Company has non-cancelable operating leases for its facilities through fiscal year 2020.
	Future minimum lease payments under operating leases as of March 2014 are as follows:
	Fiscal Years Ending March or April		Amount
			(in thousands)
	2015		$	3,304
	2016			3,791
	2017			3,876
	2018			3,732
	2019			3,844
	Beyond			2,911
	Total		$	21,458
	The Company’s lease agreements provide for rental payments which have certain lease incentives and graduated rental payments. As a result, the rent expense is recognized on a straight-line basis over the term of the lease. The Company’s rental expense under operating leases was approximately $5.6 million, $2.0 million and $1.7 million for fiscal 2014, fiscal 2013 and fiscal 2012, respectively.
	Purchase Commitments
	The Company has non-cancelable purchase commitments with its foundry vendors. Future minimum payments under the purchase commitments as of March 2014 are less then twelve months.
	401(k) Savings Plan
	In November 2004, the Company established a defined contribution savings plan under Section 401(k) of the Internal Revenue Code. This plan covers substantially all employees who meet minimum age and service requirements and allows participants to defer a portion of their annual compensation on a pretax basis. The Company may make contributions to the plan at the discretion of the Board of Directors. During fiscal 2014, the Company contributed $43,000 to the plan.
	Legal Proceedings
	From time to time the Company is involved in litigation that the Company believes is of the type common to companies engaged in our line of business, including intellectual property and employment issues. Regardless of the merit or resolution of any such litigation, complex intellectual property litigation is generally costly and can divert the efforts and attention of our management and technical personnel.
	On May 16, 2012, and again on March 11, 2013 STMicroelectronics, Inc. (“STI”) filed patent infringement complaints (“ST Microelectronics Patent Litigation I and II”) against the Company, alleging infringement of certain of their patents (collectively, the “Asserted Patents”). STI alleged that certain lnvenSense Micro-Electro-Mechanical Systems (“MEMS”) products and services infringed one or more claims of the Asserted Patents. On July 9, 2012, the Company filed counterclaims against STI alleging infringement of certain of our patents. On February 9, 2014, the Company and STI settled and resolved all litigation and proceedings pending between them for a one-time cash payment of $15.0 million to STI, and entered into a patent cross license agreement. The other terms of the settlement and the patent cross license agreement remain confidential and are not expected to have a material impact on our future results. This settlement and patent cross license resolves all outstanding legal proceeding between the Company and STI. The settlement resulted in recognition of a pre-tax charge of $15.0 million in fiscal year 2014.
	The Company is not aware of any other pending legal matters or claims, individually or in the aggregate, that is expected to have a material adverse impact on its consolidated financial position, results of operations, or cash flows. However, the Company’s analysis of whether a claim may proceed to litigation cannot be predicted with certainty, nor can the results of litigation be predicted with certainty. Nevertheless, defending any of these actions, regardless of the outcome, may be costly, time consuming, distract management personnel, and have a negative effect on our business. An adverse outcome in any of these actions, including a judgment or settlement, may cause a material adverse effect on our future business, operating results, and/or financial condition.
	The Company indemnifies certain customers, distributors, suppliers and subcontractors for attorney fees and damages and costs awarded against such parties in certain circumstances in which the Company’s products are alleged to infringe third-party intellectual property rights, including patents, registered trademarks or copyrights. Indemnification costs are charged to operations as incurred. There were no indemnification costs for fiscal year 2013, fiscal year 2012 and fiscal year 2011.
	The Company’s Third Amended and Restated Bylaws require the Company to indemnify its directors and officers and employees to the fullest extent permitted by the Delaware General Corporation Law (DGCL). In addition, the Company’s current directors, including the Company’s chief executive officer and certain executive officers, have entered into separate indemnification agreements with the Company. The Company’s Second Amended and Restated Certificate of Incorporation, as amended, limits the liability of directors to the Company or its stockholders to the fullest extent permitted by the DGCL. The obligation to indemnify generally means that the Company is required to pay or reimburse the individuals’ reasonable legal expenses and possibly damages and other liabilities incurred in connection with these matters.

Convertible_Senior_Notes

Convertible Senior Notes	12 Months Ended
	Mar. 30, 2014
Debt Disclosure [Abstract]	'
Convertible Senior Notes	'
	5	Convertible Senior Notes
	In November 2013, the Company issued $175.0 million aggregate principal amount of 1.75% Convertible Senior Notes due on November 1, 2018 (the “Notes”), in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933 (the “Securities Act”). The Notes offered have not been registered under the Securities Act, or applicable state securities laws or blue sky laws, and may not be offered or sold in the United States absent registration under the Securities Act and applicable state securities laws or available exemptions from the registration requirements.
	The Notes are senior unsecured obligation of the Company and rank equally in right of payment with all of the Company’s existing and future senior unsecured indebtedness and are junior to any of the Company’s existing and future secured indebtedness. The Notes pay interest in cash semi-annually (May and November) at a rate of 1.75% per annum. Net proceeds received by the Company, after issuance costs, were approximately $169.3 million.
	On or after August 1, 2018 until the maturity date, the Notes may be converted at the option of the holders. Holders may convert the Notes at their option prior to August 1, 2018 only under the following circumstances:
	1) During any calendar quarter commencing after the calendar quarter ending on March 31, 2014 (and only during such calendar quarter), if the last reported sale price of the Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day;
	2) During the five business day period after any five consecutive trading day period in which the “trading price” per $1,000 principal amount of notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of our common stock and the conversion rate on each such trading day; or
	3) Upon the occurrence of specified corporate events, including if there is a fundamental change.
	Upon conversion, the Company will pay cash up to the aggregate principal amount of the notes to be converted and pay or deliver cash, shares of its own common stock or a combination of cash and shares of its own common stock, at the Company’s election, in respect of the remainder, if any, of its conversion obligation in excess of the aggregate principal amount of the notes being converted.
	The conversion rate is initially 45.683 shares per $1,000 principal amount of the Notes (equivalent to an initial conversion price of approximately $21.89 per share of common stock), subject to certain adjustments.
	The Notes are not redeemable by the Company prior to the maturity date. At the event of default or fundamental change, the principal amount of the notes plus accrued and unpaid interest may become due immediately at the Note holders’ option.
	The Company used and plans to use the net proceeds of approximately $169.3 million from the offering of the Notes (after the issuance costs) for general corporate purposes, including to replace cash used to purchase the MEMS Microphone business line of Analog Devices, Inc. (see Note 8), for the cost of the Note hedge transactions (see below) and for capital expenditures and working capital. However, the Company has not designated with certainty all of the particular uses for the net proceeds from the Notes.
	The Company separately accounts for the liability and equity components of the Notes. The initial debt component of the Notes was valued at $135.7 million based on the contractual cash flows discounted at an appropriate comparable market non-convertible debt borrowing rate at the date of issuance of 7.3%, with the equity component representing the residual amount of the proceeds of $39.3 million which was recorded as a debt discount. The issuance costs were allocated pro-rata based on the relative initial carrying amounts of the debt and equity components, including the Note hedges and warrants transactions described below. As a result, $2.5 million of the issuance costs was allocated to the equity component of the Notes, $3.0 million of issuance costs paid to the initial purchaser was accounted for as a debt discount and $0.25 million of the issuance costs was classified as other non-current assets. The debt discount and the issuance costs allocated to the debt component are amortized as additional interest expense over the term of the Notes using the effective interest method. As of March 30, 2014 the remaining amortization period of the debt discount and the issuance costs is 4.6 years. The effective interest rate of the Notes is 7.84% per annum (1.75% coupon rate plus 6.09% of non-cash accretion expense).
	Convertible Notes Hedges and Warrants
	Concurrent with the issuance of the Notes on November 6 and 7, 2013, the Company purchased call options for its own common stock to hedge the Notes (the “Note Hedge”) and sold call options for its own common stock (the “Warrants”). The Note Hedges and Warrants transactions are structured to reduce the potential future economic dilution associated with the conversion of the Notes and are excluded from the computation of diluted earnings per share for each period presented, as the Company’s average stock price during each period is less than the conversion price.
	The Note Hedges—On November 6 and 7, 2013, the Company purchased call options from a counterparty for an aggregate price of approximately $39.1 million, which gives the Company the right to buy from the counterparty up to approximately 8.0 million shares of the Company’s common stock at a price of $21.89 per share, subject to adjustments. The Note Hedge is exercisable upon conversion of the Note for a number of shares equal to the product of 0.045683 and amount of the converted Note. Upon exercise of the Note Hedge the Company will receive from the counterparty cash, shares of Company’s common stock, or a combination thereof, equal to the amount by which the market price per share of the Company’s common stock exceeds $21.89 during the applicable valuation period. By the Note Hedge terms the Company will receive cash and shares in a combination that offsets share dilution caused by conversion of the Note.
	Warrants—On November 6 and 7, 2013, the Company sold call options to the same counterparty for approximately $25.6 million, which gives the counterparty the right to buy from the Company up to approximately 8.0 million shares of the Company’s common stock at an exercise price of $28.66 per share, subject to adjustments, on a series of days commencing on February 1, 2019 and ending May 13, 2019. Upon exercise of the Warrants, the Company has the option to deliver cash or shares of its common stock equal to the difference between the market price on the exercise date and the strike price of the warrants. Upon exercise of the Warrants the Company will pay to the Initial Purchaser cash, shares of Company’s common stock, or a combination thereof (at the Company’s choice), equal to the amount by which the market price per share of the Company’s common stock exceeds $28.66 during the applicable valuation period.
	The Note Hedges and Warrants above are classified in stockholders’ equity in the Company’s consolidated balance sheets.
	The following table summarizes the principal amounts and related unamortized discount on the Notes (in thousands):
			March 2014
	Principal amount of the Notes		$	175,000
	Unamortized discount on the Notes			39,417
	Net carrying value		$	135,583
	The following table presents the amount of interest expense recognized related to the Notes (in thousands):
			Fiscal 2014
	Contractual coupon interest expense		$	1,158
	Accretion of debt discount			2,835
	Amortization of debt issuance costs			19
	Total interest expense related to the Notes		$	4,012
	As of March 30, 2014, our aggregate future principal debt maturities are as follows (in thousands):
	Fiscal Year		Amount
	2015 – 2018		$	—
	2019			175,000
	Total		$	175,000
	The convertible notes issued by the Company in November 2013 are shown in the accompanying consolidated balance sheets at their original issuance value, net of unamortized discount, and are not marked to market each period. The approximate fair value of the convertible notes as of March 30, 2014 was $216.9 million. The fair value of the convertible notes was determined using quoted market prices for similar securities, which, due to limited trading activity, are considered Level 2 in the fair value hierarchy.

Stockholders_Equity

Stockholders' Equity	12 Months Ended
	Mar. 30, 2014
Equity [Abstract]	'
Stockholders' Equity	'
	6	Stockholders’ Equity
	Stock Plans
	In July 2011, the Company’s Board of Directors and its stockholders approved the establishment of the 2011 Stock Incentive Plan (the “2011 Plan”). The 2011 Plan provides for annual increases in the number of shares available for issuance there under on the first business day of each fiscal year, beginning with the Company’s fiscal year following the year of this offering, equal to four percent (4%) of the number of shares of the Company’s common stock outstanding as of such date, which resulted in an annual increase of 3.4 million shares for fiscal year 2014.
	Under the Company’s 2004 Stock Incentive Plan and 2011 Stock Incentive Plan (the “Plans”), the Board of Directors may grant either incentive stock options, nonqualified stock options, or stock awards or units to eligible persons, including employees, nonemployees, members of the Board of Directors, consultants and other independent advisors who provide services to the Company. As of March 30, 2014, the Company has reserved for issuance under the Plans a total of 21.3 million shares (including additional shares subject to automatic increase provisions under the 2011 Plan).
	Incentive stock options may only be granted to employees and at an exercise price of no less than fair value on the date of grant. Nonqualified stock options may be granted at an exercise price of no less than 100% of fair value on the date of grant. For owners of more than 10% of the Company’s common stock, options may only be granted for an exercise price of not less than 110% of fair value, and these options generally expire 10 years from the date of grant. Stock options may be exercisable immediately but subject to repurchase. Stock options vest over the period determined by the Board of Directors, generally four years.
	2013 Employee Stock Purchase Plan
	Under the 2013 Employee Stock Purchase Plan, effective September 13, 2013, (the “Purchase Plan”), eligible employees may apply accumulated payroll deductions, which may not exceed 10% of an employee’s compensation, to the purchase of shares of the Company’s common stock at periodic intervals. The purchase price of stock under the Purchase Plan is equal to 85% of the lower of (i) the fair market value of the Company’s common stock on the first day of each offering period, or (ii) the fair market value of the Company’s common stock on the purchase date (as defined in the Purchase Plan). Each offering period consists of one purchase period of approximately six months duration.
	An aggregate of 400,000 shares of common stock were reserved for issuance to employees under the Purchase Plan. As of March 30, 2014, no shares had been purchased and 400,000 shares were reserved for future issuance under the Purchase Plan.
	During fiscal 2014, compensation expense recognized in connection with the Purchase Plan was $0.2 million.
	Stock option activities of the Company under the Plans are as follows (in thousands, except per share amounts):
			Options			Options			Weighted-		Weighted-		Aggregate
			Available			Issued and			Average		Average		Intrinsic
			for Grant			Outstanding			Exercise		Remaining		Value
									Price		Contractual
											Term
											(In Years)
	Balance—April 3, 2011			1,457			8,198		$	2.24
	Increase to stock option pool			11,835
	Options granted (weighted-average fair value of $3.72 per share)			(4,172	)		4,172			8.12
	Options exercised			—			(665	)		2.04
	Options canceled			590			(589	)		4.95
	Balance—April 1, 2012			9,710			11,116			4.31
	Increase to stock option pool			3,236
	Options granted (weighted-average fair value of $5.12 per share)			(4,057	)		4,057			12.13
	Options exercised			—			(3,369	)		1.67
	Options canceled			1,309			(1,309	)		8.53
	Balance—March 31, 2013			10,198			10,495			7.65
	Increase to stock option pool			3,399
	Options granted (weighted-average fair value of $5.90 per share)			(1,578	)		1,578			16.14
	Options exercised			—			(3,221	)		4.47
	Options canceled			576			(576	)		9.71
	Balance—March 30, 2014			12,595			8,276		$	10.37		7.87	$	102,072
	March 30, 2014
	Vested and expected to vest						7,600		$	10.17		7.81	$	95,243
	Exercisable—March 30, 2014						2,852		$	7.27		6.85	$	43,999
	March 31, 2013
	Vested and expected to vest						9,323		$	7.31		7.3	$	36,744
	Exercisable—March 31, 2013						3,886		$	3.68		5.09	$	27,703
	Additional information regarding options outstanding as of March 2014 is as follows (in thousands except per share amounts):
	Options Outstanding March 2014
	Exercise		Number			Weighted-			Weighted-		Number		Weighted-
	Price		Outstanding			Average			Average Exercise		Exercisable		Average Exercise
						Remaining			Price of Options				Price of Options
						Contractual Life			Outstanding				Exercisable
						(In Years)
	$0.04 - $0.32			154			2.94		$	0.25		154	$	0.25
	$0.70 - $1.28			252			4.35			0.86		252		0.86
	$2.97 - $5.07			617			5.67			3.26		582		3.27
	$5.13 - $9.81			1,999			7.26			6.87		824		6.64
	$10.00 - $15.24			4,042			8.5			11.79		905		11.82
	$15.58 - $22.70			1,212			9.26			18.29		135		17.86
				8,276			7.87		$	10.37		2,852	$	7.27
	Valuation of Stock-Based Awards
	The Company applies the provisions of ASC 718-10 “Compensation—Stock Compensation” which establishes the accounting for stock-based awards based on the fair value of the award measured at grant date. Accordingly, stock-based compensation cost is recognized in the consolidated statements of income as a component of both cost of revenues and operating expenses over the requisite service period. ASC 718-10 requires tax benefits in excess of compensation cost to be reported as a financing cash flow rather than as a reduction of taxes paid. The determination of the fair value of stock-based payment awards on the date of grant using the Black-Scholes option pricing model is affected by the volatilities of a peer group of companies based on industry, stage of life cycle, size and financial leverage, actual and projected employee stock option exercise behaviors, risk-free interest rate and expected dividends. Variables to be determined include expected volatility, estimated term and risk-free interest rate.
	The aggregate intrinsic value of the stock options exercised during fiscal 2014, fiscal 2013 and fiscal 2012 was $39.4 million, $36.1 million and $5.9 million, respectively. The aggregate intrinsic value was calculated as the difference between the exercise price of the stock options and the estimated fair market value of the underlying common stock at the date of exercise.
	The number of options expected to vest takes into account an estimate of expected forfeitures. As of March 30, 2014, the remaining unamortized stock-based compensation expense, reduced for estimated forfeitures and related to non-vested options, was $19.3 million to be amortized over a weighted-average remaining period of 2.7 years. Total unrecognized expense will be adjusted for future changes in estimated forfeitures.
	The Company used the following weighted-average assumptions in determining stock-based compensation expense for option grants made during fiscal 2014, fiscal 2013 and fiscal 2012.
			Fiscal 2014		Fiscal 2013	Fiscal 2012
	Expected Term		4.7 years		5.4 years	5.8 years
	Volatility		40.1% - 41.9%		42.7% - 48.5%	48.2% - 49.51%
	Risk-free interest rate		0.6% - 2.7%		0.6% - 1.3%	0.7% - 2.4%
	Dividend yield		0%		0%	0%
	Market-based Awards
During fiscal 2013, the Company’s current chief executive officer was granted options to purchase up to 622,115 shares at $11.57 per share whose vesting is contingent upon meeting various price target thresholds that will trigger a four year ratable vesting period if the minimum twenty day closing stock prices cross thresholds of $15.00, $17.50 and $20.00 respectively. The exercise price of the options represents the stock price on the date of grant, and the options have a legal term of 10 years. The fair value of each option granted was estimated on the date of grant using a Monte Carlo Simulation analysis valuation model, assumes that price target thresholds will be achieved and results in an estimated term for the tranches ranging from 5.0 to 6.2 years. If the price target thresholds are not met, compensation cost is not reversed. The Company used the following assumptions in estimating the fair value of the shares; expected volatility 46.5%, expected dividends 0%, and risk-free rate of 0.8%. The weighted-average grant-date fair value of options granted during the period was $4.87 and is included in the stock option activities table above. During fiscal 2014 and 2013, none of the market-based options were exercised. At March 2014, there was $1.1 million of total unrecognized compensation cost reduced for estimated forfeitures and related to non-vested shares; that cost is expected to be recognized over a period of approximately 5 years.
Restricted Stock Units and Restricted Stock
Restricted stock unit and restricted stock activity of the Company under the Plans are as follows (in thousands, except per share amounts):
Restricted stock unit and restricted stock activity		Shares			Weighted average
					grant date
					fair value per share
		(in thousands)
Nonvested at April 1, 2012			118		$	12.47
Granted			750			12.08
Vested			(8	)		17.79
Forfeited			(54	)		12.48
Nonvested at March 31, 2013			806			12.05
Granted			2,952			17.28
Vested			(251	)		11.84
Forfeited			(182	)		13.62
Nonvested at March 30, 2014			3,325		$	16.63
Restricted stock units and restricted stock granted to employees are generally subject to the employee’s continued service to the Company over that period. The fair value of restricted stock units and restricted stock is determined using the fair value of the Company’s common stock on the date of the grant. Compensation expense is generally recognized on a straight-line basis over the requisite service period of each grant adjusted for estimated forfeitures. At March 2014, there was approximately $50.6 million of total unrecognized compensation cost related to restricted stock units and restricted stock, which the Company expects to recognize over a weighted-average period of 3.5 years.
Stock-Based Compensation Expense
Total stock-based compensation cost for the Company’s stock plans for fiscal 2014, fiscal 2013 and fiscal 2012 are as follows:
		Fiscal 2014			Fiscal 2013			Fiscal 2012
		(in thousands)
Cost of revenue		$	1,296		$	649		$	325
Research and development			6,218			2,753			1,474
Selling, general and administrative			8,510			5,117			1,889
Total employee stock-based compensation expense		$	16,024		$	8,519		$	3,688
Common Stock
As of March 2014 and March 2013, common stock reserved for future issuance was as follows (in thousands):
		Number of Shares
Common stock reserved for issuance		March 2014			March 2013
Stock Plans:
Outstanding stock options			8,276			10,495
Outstanding restricted stock units and restricted stock			3,325			806
Reserved for future equity incentive grants			9,697			9,383
			21,298			20,684
Purchase Plan			400			—
Warrants to purchase common stock			7,995			94
Total common stock reserved for future issuances			29,693			20,778

Income_Taxes

Income Taxes	12 Months Ended
	Mar. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	7.        Income	Taxes
	In fiscal year 2014, we recorded an income tax provision of $0.1 million compared to an income tax provision of $5.3 million and $10.2 million for fiscal year 2013 and 2012, respectively. The difference between fiscal year 2014 compared to fiscal year 2013, was primarily due to a lower effective tax rate resulting from foreign rate differentials, increased research and development tax credits, stock-based compensation deductions and was negatively affected by an increase in non-deductible stock option expense.
	The components of income before taxes are as follows:
			Fiscal 2014			Fiscal 2013			Fiscal 2012
			(in thousands)
	United States		$	(3,817	)	$	11,883		$	19,179
	International			10,006			45,123			27,973
			$	6,189		$	57,006		$	47,152
	Income tax expense was comprised of the following:
			Fiscal 2014			Fiscal 2013			Fiscal 2012
			(in thousands)
	Current:
	Federal		$	1,658		$	5,553		$	10,856
	State			1			6			1
	International			179			142			47
			$	1,838		$	5,701		$	10,904
	Deferred:
	Federal		$	(1,856	)	$	(375	)	$	(777	)
	State			—			(6	)		—
	International			88			(19	)		78
				(1,768	)		(400	)		(699	)
	Income tax provision		$	70		$	5,301		$	10,205
	The provision for income taxes differs from the amount computed by applying the statutory rates as follows:
			Fiscal 2014			Fiscal 2013			Fiscal 2012
	Income tax provision at the federal statutory rate			35	%		35	%		35	%
	Research and development credits			(27.3	)		(2.1	)		(1.0	)
	Foreign tax rate differential			(22.0	)		(25.8	)		(14.7	)
	Non deductible stock compensation			19.5			2.2			2.3
	Other			(4.1	)		—			—
	Effective tax rate			1.1	%		9.3	%		21.6	%
	The components of the deferred tax asset are as follows:
			March 2014			March 2013
			(in thousands)
	Deferred tax asset:
	Accrued expenses and reserves		$	1,769		$	841
	Stock based compensation			2,167			1,198
	Research and development credits			4,115			1,618
	Net operating loss carryforwards			1,001			1,011
	Fixed Assets			(44	)		179
	Valuation allowance			(3,761	)		(2,481	)
	Deferred tax asset		$	5,247		$	2,366
	Deferred income taxes reflect the net tax effects of temporary differences between the carrying amount of assets and liabilities for financial reporting purposes and the amounts for income tax purposes. The Company has not provided for U.S. federal income and foreign withholding taxes on undistributed earnings from non-U.S. operations as of March 2014, as in general, it is the practice and intention of the Company to reinvest the earnings of its non-U.S. subsidiaries in those operations. The Company has not made a provision for U.S. or additional foreign withholding taxes on the excess of the amount for financial reporting over the tax basis of investments in foreign subsidiaries that are essentially permanent in duration of approximately $88.4 million and $78.0 million at March 2014 and March 2013, respectively. Generally, such amounts become subject to U.S. taxation upon the remittance of dividends and under certain other circumstances. It is not practicable to estimate the amount of deferred tax liability related to investments in these foreign subsidiaries.
	As a result of certain realization requirements of ASC 718, Compensation—Stock Compensation, the table of deferred tax assets and liabilities shown above does not include certain deferred tax assets as of March 30, 2014 that arose directly from (or the use of which was postponed by) tax deductions related to equity compensation that are greater than the compensation recognized for financial reporting. Equity will be increased by $5.0 million if and when such deferred tax assets are ultimately realized. The Company uses ASC 740 ordering when determining when excess tax benefits have been realized.
	At March 2014, the Company had approximately $5.3 million of federal net operating loss carryforwards for next 20 years and the Company had approximately $4.0 million federal research and develop tax credit available to carryforwards which will expire from FY2032 to FY2034.
	At March 2014, the Company had approximately $17.8 million of California state loss carryforwards. The California net operating loss carryforwards expire between 2017 and 2022. At March 2014, the Company had approximately $5.6 million California state research tax credit carryforwards. The California credits are not subject to expiration under current California tax law.
	The Company maintains a valuation allowance against its California deferred tax assets as of March 2014. The Company considers all available evidence, both positive and negative, in assessing the extent to which a valuation allowance should be applied against deferred tax assets. The Company’s valuation allowance increased $1.3 million as of March 2014 compared to March 2013, and increased $0.7 million as of March 2013 compared to April 2012.
	While management believes that the Company has adequately provided for all tax positions, amounts asserted by tax authorities could be greater or less than the recorded position. Accordingly, the Company’s provisions on federal, state and foreign tax-related matters to be recorded in the future may change as revised estimates are made or the underlying matters are settled or otherwise resolved.
	A reconciliation of the change in unrecognized tax benefits is as follows:
			For the Period April 3,
			2011 to March 30, 2014
			(in thousands)
	Balance at April 3, 2011		$	1,056
	Increases in unrecognized tax benefits			2,799
	Balance at April 1, 2012		$	3,855
	Increases in unrecognized tax benefits			3,961
	Balance at March 31, 2013		$	7,816
	Increases in unrecognized tax benefits			2,797
	Balance at March 30, 2014		$	10,613
	Included in the gross unrecognized tax benefits balance of $10.6 million at March 2014 are $8.3 million of tax positions which would affect income tax expense if recognized. As of March 2014, approximately $2.3 million of unrecognized tax benefits would be offset by $1.5 million for State research credits and net operating losses included within our valuation allowance and $0.8 million of which would represent an adjustment to other tax accounts, primarily additional paid in capital. The Company recognizes interest and penalties related to unrecognized tax benefits within the income tax expense line in the accompanying Consolidated Statements of Income. Accrued interest and penalties are included within the related tax liability line in the Consolidated Balance Sheet. As of March 2014, the Company had $0.2 million accrued interest related to uncertain tax matters. The Company does not expect its unrecognized tax benefits at March 2014 will materially change within the next 12 months. The Company files income tax returns in the U.S. federal, California and various international jurisdictions. The 2003 through 2013 tax years are open and may be subject to potential examination in one or more jurisdictions.
	The Company is required to file U.S. federal income tax returns as well as income tax returns in various states and foreign jurisdictions. The Company may be subject to examination by the Internal Revenue Service (“IRS”) for tax years 2010 and forward. The Company may be subject to examination by California for tax years 2009 and forward. Generally, the Company is subject to routine examination for tax years 2008 and forward in various foreign tax jurisdictions in which it operates.

Acquisition

Acquisition	12 Months Ended
	Mar. 30, 2014
Business Combinations [Abstract]	'
Acquisition	'
	8	Acquisition
	On October 14, 2013, the Company entered into a definitive Master Asset Purchase and Sale Agreement with Analog Devices, Inc. (“ADI”). The transaction closed on October 31, 2013. The Company acquired certain assets relating to ADI’s MEMS microphone business for a purchase price of $100 million in cash, of which the Company is entitled to certain contingent future expense reimbursements of approximately $2.2 million. The Company also agreed to a contingent cash payment of up to $70.0 million payable upon the achievement of certain revenue performance targets within one year of the transaction close date. Due to a low probability of achieving the revenue targets, the fair value of the contingent consideration is estimated to be zero in the purchase price allocation described below. ADI licensed certain technology related to the MEMS microphone business to the Company on a royalty-free, worldwide basis, and provides certain transition services to the Company following the closing.
	The acquisition has been accounted for using the acquisition method of accounting in accordance with Accounting Standards Codification (“ASC”) 805—Business Combinations. Under the acquisition method of accounting, the total purchase consideration of the acquisition is allocated to the tangible assets and identifiable intangible assets and liabilities assumed based on their relative fair values. The excess of the purchase consideration over the net tangible and identifiable intangible assets is recorded as goodwill, and was derived from expected benefits from future technology development, synergies and the knowledgeable and experienced workforce who joined the Company after the acquisition. The Company incurred $2.1 million of acquisition related costs in fiscal 2014.
	The strategic rationale for the acquisition was to accelerate the Company’s audio roadmap and complement its current MEMS System on Chip product offerings at existing mobile, gaming and wearable device customers, while gaining entry into new markets. The acquisition expands the Company’s patent portfolio and existing tier one customer base, which includes major OEM brands worldwide.
	The purchase price allocation is based on estimates, assumptions, third party valuations and other studies of the value of the acquired assets which have not progressed to a stage where there is sufficient information to make a definitive allocation. Accordingly, purchase price allocation and adjustments reported herein will remain preliminary until the Company has all of the information necessary to finalize the allocation of the purchase price, and the final acquisition accounting adjustments could differ materially from the pro-forma adjustments presented herein. As of March 30, 2014, determination of the fair value of fixed assets and inventories was preliminary. Any increase or decrease in the fair value of the Microphone Product Line’s tangible and identifiable intangible assets and liabilities, as compared to the information shown herein, would also change the portion of purchase price allocable to goodwill and could impact the operating results of the Company due to differences in amortization related to these assets and liabilities. During the fourth quarter of fiscal year 2014, adjustment was made to account for a $0.1 million increase to fixed assets, based on the fair market value of an asset. This adjustment resulted in a $0.1 million decrease in the fair value assigned to goodwill. The Company intends to complete the purchase price allocation within twelve months of the closing of the acquisition.
	The following table summarizes the preliminary purchase price of the assets acquired and the liabilities assumed as of March 30, 2014, the completion of the acquisition.
			Total Amount
	Assets Acquired		(in thousands)
	Inventories		$	5,107
	Property and equipment, net			4,339
	Intangible assets:
	Developed Technology			28,520
	In-Process Research & Development			7,330
	Customer Relationships			1,560
	Goodwill			50,952
	Total assets acquired			97,808
	Total purchase price (net of $2.2 million of contingent expense reimbursements)		$	97,808
	The preliminary fair value of intangible assets of $37.4 million has been allocated on a preliminary, tentative basis to the following three asset categories: 1) developed technology, 2) in-process research & development and 3) customer relationships. Developed technology and customer relationships will be amortized on a straight line basis over the estimated useful life of the assets.
	The following table represents the estimated useful lives of developed technology and customer relationships:
			Fair Value		Estimated
			Amount		Useful Life
			(in thousands)		(in years)
	Developed Technology		$	28,520		6
	Customer Relationships		$	1,560		7
	The preliminary fair values of the identifiable intangible assets: developed technology, in-process research & development and customer relationships were determined using the following methodologies:
	Developed Technology: The value assigned to the acquired developed technology was determined using the multi-period excess earnings method. The fair value of developed technology was capitalized as of the acquisition date and will be amortized using a straight-line method to cost of revenues over the estimated remaining life of six years.
	In-Process Research & Development: The value assigned to the acquired in-process research and development was determined using the multi-period excess earnings method. The fair value of in-process research & development was capitalized as of the acquisition date. In-process research and development capitalized at acquisition is not amortized, and is assessed for impairment on a fair value basis each fiscal quarter until the point at which the project is completed or terminates. If successfully completed, acquired in-process research and development will be amortized over its expected useful life.
	Customer Relationships: An intangible customer relationship asset was recognized to the extent that the Company was expected to benefit from future revenues reasonably anticipated given the history and operating practices of Microphone Product Line. The value assigned to customer relationships was determined using the incremental cash flow method. The fair value of customer relationships was capitalized as of the acquisition date and will be amortized using a straight-line method to sales and marketing expenses over the estimated remaining life of seven years.
	The amounts of revenue and earnings of the Microphone Product Line since the acquisition date included in the consolidated statements of operations for the current reporting periods have not been presented because the impact was not material to the Company’s consolidated results of operations.
	Pro Forma Information
	For the purpose of the summary unaudited pro forma combined supplemental information, the acquisition was assumed to have occurred as of April 2, 2012. The pro forma information for fiscal 2014 and fiscal 2013 has been calculated after applying the Company’s accounting policies and including adjustments to reflect the additional amortization of intangible assets, and additional cost of revenues related to the inventory markup that would have been charged assuming the fair value adjustments had been incurred as of April 2, 2012. The unaudited pro forma combined financial information is for informational purposes only and does not purport to represent what the Company’s actual results would have been if the acquisition had been completed as of the date indicated above, or that may be achieved in the future. The unaudited pro forma combined supplemental information does not include the effects of any cost savings from operating efficiencies or synergies that may result from the acquisition.
			Fiscal 2014		Fiscal 2013
			(in thousands)
	Revenues		$	276,592	$	275,414
	Net income		$	4,051	$	46,977

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	12 Months Ended
	Mar. 30, 2014
Goodwill And Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets	'
	9	Goodwill and Intangible Assets
	There were no changes in the carrying amount of goodwill since October 31, 2013, the closing date of the MEMS microphone business acquisition except for a decrease of $0.1 million due to an adjustment in the fourth quarter of fiscal year 2014 to preliminary purchase price allocation of the acquired business (see Note 8). The adjustment was made to account for a $0.1 million increase to fixed assets, based on the fair market value of an asset. This adjustment resulted in a $0.1 million decrease in the fair value assigned to goodwill. Intangible assets subject to amortization consist primarily of developed technology and customer relationships and are reported net of accumulated amortization. Developed technology and customer relationships are amortized on a straight line basis over the estimated useful life of the assets. In-process research and development is assessed for impairment until the development is completed and products are available for sale. The Company expects to complete the in-process research and development projects at various dates during fiscal year 2015 at which time amortization will commence.
	Amortization for acquired intangible assets was approximately $2.1 million for fiscal 2014. The following table represents intangible assets and accumulated amortization:
			Mar-14
			(in thousands)
			Gross		Accumulated		Net
					Amortization
	Developed Technology		$	28,520	$	1,980	$	,26,540
	Customer Relationships			1,560		93		1,467
	Total intangible assets subject to amortization		$	30,080	$	2,073	$	28,007
	The estimated future amortization expense related to intangible assets at March 30, 2014, is as follows:
	Fiscal Year		Estimated
			Amortization
			(in thousands)
	2015		$	4,976
	2016			4,976
	2017			4,976
	2018			4,976
	2019			4,976
	Thereafter			3,127
	Total		$	28,007

Quarterly_Financial_Data_Unaud

Quarterly Financial Data (Unaudited)	12 Months Ended
	Mar. 30, 2014
Quarterly Financial Information Disclosure [Abstract]	'
Quarterly Financial Data (Unaudited)	'
	10	Quarterly Financial Data (Unaudited)
	Fiscal Year 2014:		Three Months Ended
			June  30,			September  29,			December  29,			March  30,
			2013			2013			2013			2014
			(in thousands)
	Net revenue		$	55,910		$	70,941		$	66,684		$	58,998
	Cost of revenue			26,591			34,364			35,094			31,675
	Gross profit			29,319			36,577			31,590			27,323
	Operating expenses:
	Research and development			8,114			9,810			14,522			15,985
	Selling, general and administrative			9,155			11,424			15,663			15,102
	Litigation settlement			—			—			14,500			500
	Total operating expenses			17,269			21,234			44,685			31,587
	Income (loss) from operations			12,050			15,343			(13,095	)		(4,264	)
	Interest (expense)			—			—			(1,464	)		(2,548	)
	Other income (expense), net			80			210			(219	)		96
	Other income (expense), net			80			210			(1,683	)		(2,452	)
	Income (loss) before income taxes			12,130			15,553			(14,778	)		(6,716	)
	Income tax (benefit) provision			1,808			1,945			(2,599	)		(1,084	)
	Net income (loss)		$	10,322		$	13,608		$	(12,179	)	$	(5,632	)
	Basic		$	0.12		$	0.16		$	(0.14	)	$	(0.06	)
	Diluted		$	0.12		$	0.15		$	(0.14	)	$	(0.06	)
	Weighted average shares outstanding in computing net income per share allocable to common stockholders:
	Basic			85,038			86,289			87,047			87,691
	Diluted			87,914			89,778			87,047			87,691
	Fiscal Year 2013:		Three Months Ended
			July 1,			September  30,			December 30,			March  31,
			2012			2012			2012 (1)			2013
			(in thousands)
	Net revenue		$	39,202		$	55,294		$	58,929		$	55,209
	Cost of revenue			17,639			24,923			27,723			27,652
	Gross profit			21,563			30,371			31,206			27,557
	Operating expenses:
	Research and development			5,655			5,918			6,712			6,363
	Selling, general and administrative			6,258			7,202			8,428			7,503
	Total operating expenses			11,913			13,120			15,140			13,866
	Income from operations			9,650			17,251			16,066			13,691
	Interest (expense)			(1	)		(1	)		—			—
	Other income, net			38			55			98			159
	Other income, net			37			54			98			159
	Income before income taxes			9,687			17,305			16,164			13,850
	Income tax (benefit) provision			2,036			3,641			(654	)		278
	Net income		$	7,651		$	13,664		$	16,818		$	13,572
	Basic		$	0.09		$	0.17		$	0.2		$	0.16
	Diluted		$	0.09		$	0.16		$	0.19		$	0.15
	Weighted average shares outstanding in computing net income per share allocable to common stockholders:
	Basic			81,184			82,429			83,218			84,109
	Diluted			87,080			87,257			87,350			87,741
	-1	The three months ended December 30, 2012 includes an income tax benefit of $2.2 million ($0.03 and $0.02 basic and diluted earnings per share, respectively), primarily due to changes in estimate of earnings attributable to domestic versus foreign operations related to prior years.

Organization_and_Summary_of_Si1

Organization and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Mar. 30, 2014
Accounting Policies [Abstract]	'
Business	'
	Business
	InvenSense, Inc. (“the Company”) was incorporated in California in June 2003 and reincorporated in Delaware in January 2004. The Company designs, develops, markets and sells Micro-Electro-Mechanical Systems (“MEMS”) sensors, such as accelerometers, gyroscopes and microphones for consumer electronics, and is dedicated to bringing the best-in-class size, performance and cost solutions to market. Targeting applications in smartphones and tablets, console and portable video gaming devices, digital still and video cameras, smart TVs (including digital set-top boxes, televisions and multi-media HDDs), navigation devices, toys, and health and fitness accessories, the Company delivers leading solutions based on its advanced multi-axis technology.
Certain Significant Business Risks and Uncertainties	'
	Certain Significant Business Risks and Uncertainties
	The Company participates in the high-technology industry and believes that adverse changes in any of the following areas could have a material effect on the Company’s future financial position, results of operations, or cash flows: reliance on a limited number of primary customers to support the Company’s revenue generating activities; advances and trends in new technologies and industry standards; market acceptance of the Company’s products; development of sales channels; strategic relationships, including key component suppliers; litigation or claims against the Company based on intellectual property, patent, product, regulatory, or other factors; and the Company’s ability to attract and retain employees necessary to support its growth.
Basis of Consolidation	'
	Basis of Consolidation
	The consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles, or GAAP, and include our accounts and the accounts of our wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. The functional currency of each of the Company’s subsidiaries is the U.S. dollar. Foreign currency gains or losses are recorded as other income (expense), net, in the consolidated statements of income. During the fiscal year ended March 30, 2014, foreign currency losses were $260,000. During the fiscal year ended March 31, 2013, foreign currency losses were $51,000. During the fiscal year ended April 1, 2012 foreign currency losses were $43,000.
Fiscal Year	'
	Fiscal Year
	The Company’s fiscal year is a 52 or 53 week period ending on the Sunday closest to March 31. The Company’s three most recent fiscal years ended on March 30, 2014 (“fiscal year 2014”), March 31, 2013 (“fiscal year 2013”) and April 1, 2012 (“fiscal year 2012”) were each comprised of 52 weeks.
Use of Estimates	'
	Use of Estimates
	The preparation of the Company’s Consolidated Financial Statements and related Notes in conformity with accounting principles generally accepted in the United States of America (U.S. GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the Consolidated Financial Statements and related Notes and the reported amounts of income and expenses during the reporting period. Significant estimates included in the Consolidated Financial Statements and related Notes include income taxes, inventory valuation, stock-based compensation, loss contingencies, warranty reserves, valuation of acquired assets, and valuation of convertible senior notes, including the related convertible notes hedges and warrants. These estimates are based upon information available as of the date of the consolidated financial statements, and actual results could differ from those estimates.
Cash Equivalents	'
	Cash Equivalents
	The Company considers all highly liquid instruments acquired with a remaining maturity of three months or less when purchased to be cash equivalents. Cash and cash equivalents are stated at cost, which approximates their fair value.
Available-for-Sale Investments	'
	Available-for-Sale Investments
	Securities with remaining maturities at the time of purchase of greater than three months are considered available for sale investments. If the securities have remaining maturities of less than twelve months from the balance sheet date they are classified as short-term investments in the Company’s consolidated balance sheets; if their maturities exceed twelve months beyond the balance sheet date, they are classified as long-term investments in the Company’s consolidated balance sheets. Available-for-sale securities are carried at fair value with temporary unrealized gains and losses, net of taxes, reported within “accumulated other comprehensive income” in the Company’s consolidated financial statements.
	Available-for-sale investments are considered to be impaired when a decline in fair value is judged to be other than temporary. The Company considers available quantitative and qualitative evidence in evaluating potential impairment of its investments on a quarterly basis. If the cost of an investment exceeds its fair value, management evaluates, among other factors, general market conditions, the duration and extent to which the fair value is less than cost, and the Company’s intent and ability to hold the investment. Once a decline in fair value is determined to be other than temporary, an impairment charge is recorded and a new cost basis in the investment is established. During fiscal 2014, fiscal 2013 and fiscal 2012, the Company did not identify any other than temporary impairments.
Accounts Receivable	'
	Accounts Receivable
	Trade accounts receivable are recorded at the invoiced amount, net of allowances for doubtful accounts and sales returns and allowances. The allowance for doubtful accounts is based on the Company’s assessment of the collectability of customer accounts. The Company periodically reviews the need for an allowance by considering factors such as historical experience, credit quality, the age of the accounts receivable balances and current economic conditions that may affect a customer’s ability to pay. As a result of the Company’s favorable collection experience and customer concentration, no allowance for doubtful accounts was necessary at March 2014 or March 2013. The reserve for sales returns and allowances is based on specific criteria including agreements to provide rebates and other factors known at the time, as well as estimates of the amount of goods shipped that will be returned. To determine the adequacy of the reserve for sales returns and allowances, the Company analyzes historical experience of actual returns as well as current product return information. During fiscal 2014, fiscal 2013 and fiscal 2012, the Company incurred charges related to its reserve for sales returns and allowances of $134,000, $84,000 and $132,000, respectively. At March 2014 and March 2013, the balances for the reserve for sales returns and allowances were $91,000, and $21,000 , respectively.
Concentration of Credit Risk	'
	Concentration of Credit Risk
	Financial instruments, which potentially subject the Company to concentrations of credit risk, consist primarily of cash, cash equivalents, investments, advances to vendors, accounts receivable and the Note Hedge (see Note 5). The Company limits exposure to credit loss by placing cash, cash equivalents and investments with major financial institutions within the United States that management assesses to be of high credit quality. The Company periodically reviews the credit worthiness of its customers and generally does not require collateral or other security to support accounts receivable. The Company has not experienced any losses on accounts receivables or on deposits of cash and cash equivalents for fiscal 2014, fiscal 2013 or fiscal 2012.
	At March 30, 2014, three customers accounted for 28%, 19% and 19% of total accounts receivable. At March 2013, four customers accounted for 17%, 12%, 10% and 10% of total accounts receivable. No other customers accounted for more than 10% of total accounts receivable at March 2014 or March 2013.
	For fiscal 2014 one customer accounted for 35% of total net revenue. For fiscal 2013 three customers accounted for 24%, 18% and 11% of total net revenue. For fiscal 2012 three customers accounted for 31%, 15% and 12% of total net revenue. No other customers accounted for more than 10% of total net revenue for fiscal 2014, fiscal 2013 or fiscal 2012.
Inventories	'
	Inventories
	Inventories are stated at the lower of cost or market on a first-in, first-out basis. Inventories include finished good parts that may be specialized in nature and subject to obsolescence. The Company periodically reviews the quantities and carrying values of inventories to assess whether the inventories are recoverable. The costs associated with write-downs of inventory for excess quantity and technological obsolescence are charged to cost of revenue as incurred. Actual demand may materially differ from the Company’s projected demand, and this difference could have a material impact on the Company’s gross margin and inventory balances based on additional provisions for excess or obsolete inventory or a benefit from sales of inventory previously written down. Write-down amounts charged (credited) to cost of revenues for fiscal years 2013 and 2012 were $(3.0) million and $2.2 million, respectively. Write-down amounts charged (credited) to cost of revenues for fiscal year 2014 were insignificant.
Property and Equipment, net	'
	Property and Equipment, net
	Property and equipment, net are stated at cost and are depreciated using the straight-line method over the estimated useful lives of the assets. The estimated useful lives are as follows: production equipment and furniture and fixtures—four to five years, lab equipment, computer equipment and software—three to five years, and leasehold improvements—over the shorter of the estimated useful life or the remaining lease term.
Business Combinations	'
	Business Combinations
	The purchase price of an acquisition is allocated to the underlying assets acquired and liabilities assumed based upon their estimated fair values at the date of acquisition. To the extent the purchase price exceeds the fair value of the net identifiable tangible and intangible assets acquired and liabilities assumed, such excess is allocated to goodwill. The Company determines the estimated fair values after review and consideration of relevant information, including discounted cash flows, quoted market prices and estimates made by management. The Company adjusts the preliminary purchase price allocation, as necessary, during the measurement period of up to one year after the acquisition closing date as it obtains more information as to facts and circumstances existing at the acquisition date impacting asset valuations and liabilities assumed. Acquisition-related costs are recognized separately from the acquisition and are expensed as incurred.
Goodwill	'
	Goodwill
	Goodwill represents the excess of the purchase price of an acquired business over the fair value of the underlying net tangible and intangible assets. Goodwill is evaluated for impairment annually, and whenever events or changes in circumstances indicate the carrying value of goodwill may not be recoverable. Triggering events that may indicate impairment include, but are not limited to, a significant adverse change in customer demand or business climate that could affect the value of goodwill or a significant decrease in expected cash flows.
Intangible Assets	'
	Intangible Assets
	Intangible assets consist of developed technology and customer relationships, and in-process research and development resulting from the Company’s acquisition of MEMS microphone business of Analog Devices, Inc. (“ADI”) in the third quarter of fiscal 2014. Acquired intangible assets that are subject to amortization are developed technology and customer relationships and are recorded at cost, net of accumulated amortization. Intangible assets are amortized on a straight-line basis over their estimated useful lives. In-process research and development capitalized during business combination is amortized only after successful completion of project, over the expected useful life.
Impairment of Long Lived Assets	'
	Impairment of Long Lived Assets
	The Company regularly reviews the carrying amount of its long-lived assets, including property and equipment and intangible assets, as well as the useful lives, to determine whether indicators of impairment may exist which warrant adjustments to carrying values or estimated useful lives. An impairment loss would be recognized when the sum of the expected future undiscounted net cash flows is less than the carrying amount of the asset. Should impairment exist, the impairment loss would be measured based on the excess of the carrying amount of the asset over the asset’s fair value.
Warranty	'
	Warranty
	The Company’s warranty agreements are contract and component specific and can be up to three years for selected components. The Company’s accrual for anticipated warranty costs has declined primarily due to a decline in the historical volume of product returned under the warranty program. The accrual also includes management’s judgment regarding anticipated rates of warranty claims and associated repair costs. The following table summarizes the activity related to the product warranty liability during fiscal 2014, fiscal 2013 and fiscal 2012:
		Fiscal 2014			Fiscal 2013			Fiscal 2012
		(in thousands)
	Beginning balance	$	123		$	361		$	697
	Provision for warranty for the year		59			60			301
	Accruals related to changes in estimate		(71	)		(262	)		(547	)
	Less: actual warranty costs		(31	)		(36	)		(90	)
	Ending balance	$	80		$	123		$	361
Revenue Recognition	'
	Revenue Recognition
	Revenue from the sale of the Company’s products is recognized when all of the following four criteria are met: (1) persuasive evidence of an arrangement exists; (2) the product has been delivered; (3) the price is fixed or determinable; and (4) collection is reasonably assured. Delivery takes place after the transfer of title which historically has occurred upon shipment of the product unless otherwise stated in the customer agreement.
	For direct customers (i.e., other than distributors), the Company recognizes revenue when title to the product is transferred to the customer, which occurs upon shipment or delivery, depending upon the terms of the customer order.
	The Company primarily enters into sales transactions with distributors in which the distributor is purchasing product for an identified end-customer. For these transactions, the Company recognizes net revenue upon either shipment or delivery to the distributor, depending upon when title transfers under the terms of the order. Pursuant to the terms and conditions contained in the agreement with its distributors, all sales to distributors purchased for an identified end-customer are non-refundable, do not have rights to return product purchases except under the Company’s standard warranty terms, and do not include any price concessions or price protection.
Research and Development	'
	Research and Development
	Research and development activities are expensed as incurred.
Stock-Based Compensation	'
	Stock-Based Compensation
	The Company measures the cost of employee services received in exchange for equity incentive awards, including stock options, based on the grant date fair value of the award. The fair value is estimated using the Black-Scholes option pricing model. The Black-Scholes model requires us to estimate certain key assumptions including future stock price volatility, expected term of the options, risk free rates, and dividend yields. Certain of our stock-based awards contained a market-based condition for vesting; these awards were valued using a Monte Carlo simulation analysis to model and value multiple possible outcomes. The Company also estimates potential forfeiture of equity incentive awards granted and adjust compensation expense accordingly. The estimate of forfeitures is adjusted over the estimated term to the extent that the actual forfeiture rate or expected forfeiture rate is expected to differ from these estimates. The resulting cost is recognized over the period during which the employee is required to provide services in exchange for the award, which is usually the vesting period. The Company recognizes compensation expense over the vesting period using the straight-line method and classify these amounts in the statements of income based on the department to which the related employee is assigned. See Note 6 “Stockholders’ Equity” for a description of our stock-based employee compensation plans and the assumptions the Company uses to calculate the fair value of stock-based employee compensation.
Income Taxes	'
	Income Taxes
	The Company accounts for income taxes in accordance with ASC 740-10 “Income Taxes,” which requires the asset and liability approach and the recognition of taxes payable or receivable for the current year and deferred tax liabilities and assets for future tax consequences of events that have been recognized in the Company’s Consolidated Financial Statements and related Notes or tax returns. The measurement of current and deferred tax liabilities and assets are based on provisions of the enacted laws; the effects of future changes in tax laws or rates are not anticipated. Deferred tax assets are reduced, if necessary, by the amount of any tax benefits that, based on available evidence, are not expected to be realized. Valuation allowances are established when necessary to reduce deferred tax assets to the amount that is more likely than not to be realized.
	ASC 740-10 also prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. ASC 740-10 also provides guidance on de-recognition, classification, interest and penalties, accounting in interim periods, disclosure and transition. The Company’s policy is to recognize interest and penalties related to unrecognized tax benefits in income tax provision.
Net Income Per Share	'
	Net Income Per Share
	Basic and diluted net income per common share are presented in conformity with the two-class method required for participating securities for the period prior to their conversion upon the Company’s initial public offering (“IPO”) in November 2011, when all preferred shares were converted to common stock.
	Prior to the IPO, holders of the Company’s preferred stock were entitled to receive noncumulative dividends prior to the payment of dividends on shares of the Company’s common stock. In the event a dividend were paid on common stock, the preferred stockholders would have also been entitled to a proportionate share of any such dividend as if they were holders of common stock (on an as-if converted basis).
	Under the two-class method, net income allocable to common stockholders is determined by allocating undistributed earnings, calculated as net income less current period non-cumulative dividends allocable to the preferred stockholders for the period prior to their conversion upon the Company’s IPO. In computing diluted net income attributed to common stockholders, undistributed earnings are reallocated to reflect the potential impact of dilutive securities. Basic net income per common share is computed by dividing the net income allocable to common stockholders by the weighted average number of common shares outstanding during the period, which excludes dilutive unvested restricted stock.
	Diluted net income per share allocable to common stockholders is computed by dividing the net income allocable to common stockholders by the weighted average number of common shares outstanding, including unvested restricted stock, certain preferred stock warrants, (which were converted into common stock warrants at the completion of the Company’s IPO), and potential dilutive common shares assuming the dilutive effect of outstanding stock options and restricted stock units using the treasury stock method.
	The following table presents the calculation of basic and diluted net income per share:
		Fiscal 2014			Fiscal 2013			Fiscal 2012
		(in thousands, except per share data)
	Net income allocable to common stockholders:
	Numerator:
	Basic:
	Net income	$	6,119		$	51,705		$	36,947
	Non-cumulative dividends on convertible preferred stock		—			—			(1,915	)
	Undistributed earnings allocable to convertible preferred stockholders		—			—			(18,703	)
	Net income allocable to common stockholders—basic	$	6,119		$	51,705		$	16,329
	Diluted:
	Net income	$	6,119		$	51,705		$	36,947
	Non-cumulative dividends on convertible preferred stock		—			—			(1,967	)
	Undistributed earnings allocable to convertible preferred stockholders		—			—			(17,600	)
	Net income allocable to common stockholders—diluted	$	6,119		$	51,705		$	17,380
	Denominator:
	Basic shares:
	Weighted average shares used in computing basic net income per common share		86,520			82,738			41,614
	Diluted shares:
	Weighted average shares used in computing basic net income per common share		86,520			82,738			41,614
	Effect of potentially dilutive securities:
	Stock options and unvested restricted stock		3,367			4,445			5,229
	Common stock warrants		41			176			168
	Weighted average shares used in computing diluted net income per common share		89,928			87,359			47,011
	Net income per common share:
	Basic	$	0.07		$	0.62		$	0.39
	Diluted	$	0.07		$	0.59		$	0.37
	The following summarizes the potentially dilutive securities outstanding at the end of each period that were excluded from the computation of diluted net income per common share for the periods presented as their effect would have been antidilutive:
		Fiscal 2014			Fiscal 2013			Fiscal 2012
		(in thousands)
	Employee stock options		1,992			4,498			3,365
	Unvested restricted stock units		1,338			110			2
	Total antidilutive securities		3,330			4,608			3,367
Comprehensive Income	'
	Comprehensive Income
	Comprehensive income includes certain changes in equity that are excluded from net income. Specifically, unrealized gains and losses are included in accumulated other comprehensive income. During fiscal 2014, fiscal 2013 and fiscal 2012, comprehensive income included a combination of the current period net income and unrealized gain (loss) on available for sale investments.
Segment Information	'
	Segment Information
	The Company operates in one operating segment by designing, developing, manufacturing and marketing linear and mixed-signal integrated circuits. The Chief Executive Officer has been identified as the Chief Operating Decision Maker as defined by Financial Accounting Standards Board’s Accounting Standards Codification (“ASC”) 280 “Segment Reporting”. Enterprise-wide information is provided in accordance with ASC 280. Geographical revenue information is based on the location of our customers’ head offices. Property and equipment information is based on the physical location of the assets at the end of each fiscal period.
	Property and equipment by country were as follows:
	Country	March 2014			March 2013
		(in thousands)
	Taiwan	$	16,902		$	6,190
	United States		7,605			2,333
	Other		732			127
		$	25,239		$	8,650
	Net revenues from unaffiliated customers by country were as follows:
	Region	Fiscal 2014			Fiscal 2013			Fiscal 2012
		(in thousands)
	Korea	$	112,880		$	69,874		$	39,827
	Japan		45,493			65,663			54,754
	China		43,796			14,742			11,855
	Taiwan		18,737			39,203			34,040
	United States		24,681			16,667			11,916
	Rest of world		6,946			2,485			575
		$	252,533		$	208,634		$	152,967
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In July 2013, the FASB issued ASU No. 2013-11, “Presentation of an Unrecognized Tax Benefit when a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists” that will require the presentation of certain unrecognized tax benefits as reductions to deferred tax assets rather than as liabilities in our Consolidated Balance Sheets when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. This standard is effective for fiscal years beginning on or after December 15, 2013, and for interim periods within those fiscal years which will be the Company’s fiscal year 2015. The Company is currently evaluating the impact of this new standard on its Consolidated Financial Statements.
	In February 2013, the FASB issued ASU No. 2013-02, “Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income” which adds new disclosure requirements for items reclassified out of accumulated other comprehensive income. ASU No. 2011-02 became effective for fiscal years, and interim periods within those years, beginning after December 15, 2012, which was the Company’s fiscal interim period ended June 30, 2013 of fiscal year 2014, and the adoption did not impact the Company’s financial condition or results of operations.
	In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). ASU No. 2014-09 provides guidance that companies will recognize revenue to depict the transfer of goods or services to customers in amounts that reflect the payment to which a company expects to be entitled in exchange for those goods or services. InvenSense will be required to implement the new revenue recognition standard for the first quarter of fiscal year 2018. InvenSense is currently evaluating the impact on its consolidated financial statements.
Fair Value Measurements	'
	The Company applies the provisions of ASC 820-10, “Fair Value Measurements”. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (i.e., the “exit price”) in an orderly transaction between market participants at the measurement date. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. ASC 820-10 requires disclosure that establishes a framework for measuring fair value and expands disclosure about fair value measurements. The standard describes a fair value hierarchy based on three levels of inputs that may be used to measure fair value. The inputs for the first two levels are considered observable and the last is unobservable and include the following:
	Level 1—Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities;
	Level 2—Quoted prices in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liability; or
	Level 3—Unobservable inputs in which there is little or no market data, and as a result, prices or valuation techniques are employed that require inputs that are significant to the fair value measurement.

Organization_and_Summary_of_Si2

Organization and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Mar. 30, 2014
Accounting Policies [Abstract]	'
Summary of Activity Related to Product Warranty Liability	'
	The following table summarizes the activity related to the product warranty liability during fiscal 2014, fiscal 2013 and fiscal 2012:
		Fiscal 2014			Fiscal 2013			Fiscal 2012
		(in thousands)
	Beginning balance	$	123		$	361		$	697
	Provision for warranty for the year		59			60			301
	Accruals related to changes in estimate		(71	)		(262	)		(547	)
	Less: actual warranty costs		(31	)		(36	)		(90	)
	Ending balance	$	80		$	123		$	361
Calculation of Basic and Diluted Net Income Per Share	'
	The following table presents the calculation of basic and diluted net income per share:
		Fiscal 2014			Fiscal 2013			Fiscal 2012
		(in thousands, except per share data)
	Net income allocable to common stockholders:
	Numerator:
	Basic:
	Net income	$	6,119		$	51,705		$	36,947
	Non-cumulative dividends on convertible preferred stock		—			—			(1,915	)
	Undistributed earnings allocable to convertible preferred stockholders		—			—			(18,703	)
	Net income allocable to common stockholders—basic	$	6,119		$	51,705		$	16,329
	Diluted:
	Net income	$	6,119		$	51,705		$	36,947
	Non-cumulative dividends on convertible preferred stock		—			—			(1,967	)
	Undistributed earnings allocable to convertible preferred stockholders		—			—			(17,600	)
	Net income allocable to common stockholders—diluted	$	6,119		$	51,705		$	17,380
	Denominator:
	Basic shares:
	Weighted average shares used in computing basic net income per common share		86,520			82,738			41,614
	Diluted shares:
	Weighted average shares used in computing basic net income per common share		86,520			82,738			41,614
	Effect of potentially dilutive securities:
	Stock options and unvested restricted stock		3,367			4,445			5,229
	Common stock warrants		41			176			168
	Weighted average shares used in computing diluted net income per common share		89,928			87,359			47,011
	Net income per common share:
	Basic	$	0.07		$	0.62		$	0.39
	Diluted	$	0.07		$	0.59		$	0.37
Securities Excluded from Computation of Diluted Net Income Per Common Share	'
	The following summarizes the potentially dilutive securities outstanding at the end of each period that were excluded from the computation of diluted net income per common share for the periods presented as their effect would have been antidilutive:
		Fiscal 2014			Fiscal 2013			Fiscal 2012
		(in thousands)
	Employee stock options		1,992			4,498			3,365
	Unvested restricted stock units		1,338			110			2
	Total antidilutive securities		3,330			4,608			3,367
Property and Equipment by Country	'
	Property and equipment by country were as follows:
	Country	March 2014			March 2013
		(in thousands)
	Taiwan	$	16,902		$	6,190
	United States		7,605			2,333
	Other		732			127
		$	25,239		$	8,650
Net Revenues from Unaffiliated Customers by Country	'
	Net revenues from unaffiliated customers by country were as follows:
	Region	Fiscal 2014			Fiscal 2013			Fiscal 2012
		(in thousands)
	Korea	$	112,880		$	69,874		$	39,827
	Japan		45,493			65,663			54,754
	China		43,796			14,742			11,855
	Taiwan		18,737			39,203			34,040
	United States		24,681			16,667			11,916
	Rest of world		6,946			2,485			575
		$	252,533		$	208,634		$	152,967

Cash_Equivalents_and_Available1

Cash Equivalents and Available-for-sale Investments (Tables)	12 Months Ended
	Mar. 30, 2014
Cash And Cash Equivalents [Abstract]	'
Assets Measured at Fair Value on Recurring Basis	'
	Assets measured at fair value on a recurring basis were presented in the Company’s consolidated balance sheet as of March 30, 2014.
		March 2014		Quoted Prices		Significant			Significant
		Balance		in  Active		Other			Other
				Markets for		Observable			Unobservable
				Identical		Inputs			Inputs
				Assets Level 1		Level 2			Level 3
		(in thousands)
	Money Market Funds	$	10,657	$	10,657	$	—		$	—
	Corporate Notes and Bonds		204,683		—		204,683			—
	Municipal Notes and Bonds		3,895		—		3,895			—
	Commercial Paper		8,988		—		8,988			—
	U.S. Agency Securities		2,496		—		2,496			—
	Total	$	230,719	$	10,657	$	220,062		$	—
	Cash equivalents	$	10,657	$	10,657	$	—		$	—
	Short-term investments		91,307		—		91,307			—
	Long-term investments		128,755		—		128,755			—
	Total	$	230,719	$	10,657	$	220,062		$	—
		Mar-14		Gross		Gross			Mar-14
		Amortized Cost		Unrealized		Unrealized			Estimated FMV
				Gain		Loss
		(in thousands)
	Corporate Notes and Bonds	$	204,747	$	—	$	(64	)	$	204,683
	Municipal Notes and Bonds		3,888		7		—			3,895
	Commercial Paper		8,986		2		—			8,988
	U.S. Agency Securities		2,500		—		(4	)		2,496
	Total Available-for-sale investments	$	220,121	$	9	$	(68	)	$	220,062
	Cash equivalents									10,657
	Total Aggregate Fair Value								$	230,719
	The fair values of money market funds were derived from quoted market prices as active markets for these instruments exist. The fair values of corporate notes and bonds, commercial paper, and U.S. Agency Securities were derived from non-binding market consensus prices that are corroborated by observable market data.
	There were no transfers of assets measured at fair value between Level 1 and Level 2 during fiscal 2014.
	March 2013:
	Assets measured at fair value on a recurring basis were presented in the Company’s consolidated balance sheet as of March 31, 2013.
		March 2013		Quoted Prices		Significant			Significant
		Balance		in  Active		Other			Other
				Markets for		Observable			Unobservable
				Identical		Inputs			Inputs
				Assets Level 1		Level 2			Level 3
		(in thousands)
	Money Market Funds	$	22,860	$	22,860	$	—		$	—
	Corporate Notes and Bonds		94,485		—		94,485			—
	Commercial Paper		2,998		—		2,998			—
	U.S. Agency Securities		1,999		—		1,999			—
	Total	$	122,342	$	22,860	$	99,482		$	—
	Cash equivalents	$	22,860	$	22,860	$	—		$	—
	Short-term investments		77,040		—		77,040			—
	Long-term investments		22,442		—		22,442			—
	Total	$	122,342	$	22,860	$	99,482		$	—
		Mar-13		Gross		Gross			Mar-13
		Amortized Cost		Unrealized		Unrealized			Estimated FMV
				Gain		Loss
		(in thousands)
	Corporate Notes and Bonds	$	94,407	$	78	$	—		$	94,485
	Commercial Paper		2,997		1		—			2,998
	U.S. Agency Securities		2,001		—		(2	)		1,999
	Total Available-for-sale investments	$	99,405	$	79	$	(2	)	$	99,482
	Cash equivalents									22,860
	Total Aggregate Fair Value								$	122,342

Balance_Sheet_Details_Tables

Balance Sheet Details (Tables)	12 Months Ended
	Mar. 30, 2014
Organization Consolidation And Presentation Of Financial Statements [Abstract]	'
Inventories	'
	Inventories at March 2014 and March 2013 consist of the following:
		March 2014			March 2013
		(in thousands)
	Work in progress	$	58,641		$	18,803
	Finished goods		14,391			4,959
	Total Inventories	$	73,032		$	23,762
Prepaid Expenses and Other Current Assets	'
	Prepaid expenses and other current assets at March 2014 and March 2013 consist of the following:
		March 2014			March 2013
		(in thousands)
	Prepaid expenses	$	3,495		$	2,209
	Tax receivable		5,932			6,374
	Other receivables		5,356			87
	Deferred tax assets		2,487			951
	Advance to vendors		1,026			2,824
	Other current assets		1,291			857
	Total prepaid expenses and other current assets	$	19,587		$	13,302
Property and Equipment	'
	Property and equipment at March 2014 and March 2013 consist of the following:
		March 2014			March 2013
		(in thousands)
	Production and lab equipment	$	25,890		$	11,654
	Computer equipment and software		4,335			1,124
	Equipment under construction		2,298			1,851
	Leasehold improvements and furniture and fixtures		3,918			923
	Subtotal	$	36,441		$	15,552
	Accumulated depreciation		(11,202	)		(6,902	)
	Property and equipment, net	$	25,239		$	8,650
Accrued Liabilities	'
	Accrued liabilities at March 2014 and March 2013 consist of the following:
		March 2014			March 2013
		(in thousands)
	Payroll-related expenses	$	4,207		$	2,777
	Bonuses		3,019			2,120
	Legal fees		2,527			884
	Accrued contractual coupon interest payable on convertible senior notes		1,158			—
	Deferred revenue		800			—
	Income tax payable		117			96
	Other accrued liabilities		3,157			1,876
	Total accrued liabilities	$	14,985		$	7,753

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Mar. 30, 2014
Commitments And Contingencies Disclosure [Abstract]	'
Future Minimum Lease Payments under Operating Leases	'
	Future minimum lease payments under operating leases as of March 2014 are as follows:
	Fiscal Years Ending March or April	Amount
		(in thousands)
	2015	$	3,304
	2016		3,791
	2017		3,876
	2018		3,732
	2019		3,844
	Beyond		2,911
	Total	$	21,458

Convertible_Senior_Notes_Table

Convertible Senior Notes (Tables)	12 Months Ended
	Mar. 30, 2014
Debt Disclosure [Abstract]	'
Summary of Principal Amounts and Related Unamortized Discount on Notes	'
	The following table summarizes the principal amounts and related unamortized discount on the Notes (in thousands):
		March 2014
	Principal amount of the Notes	$	175,000
	Unamortized discount on the Notes		39,417
	Net carrying value	$	135,583
Schedule of Interest Expense Recognized Related to Notes	'
	The following table presents the amount of interest expense recognized related to the Notes (in thousands):
		Fiscal 2014
	Contractual coupon interest expense	$	1,158
	Accretion of debt discount		2,835
	Amortization of debt issuance costs		19
	Total interest expense related to the Notes	$	4,012
Schedule of Aggregate Future Principal Debt Maturities	'
	As of March 30, 2014, our aggregate future principal debt maturities are as follows (in thousands):
	Fiscal Year	Amount
	2015 – 2018	$	—
	2019		175,000
	Total	$	175,000

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	12 Months Ended
	Mar. 30, 2014
Equity [Abstract]	'
Stock Option Activities	'
	Stock option activities of the Company under the Plans are as follows (in thousands, except per share amounts):
		Options			Options			Weighted-		Weighted-		Aggregate
		Available			Issued and			Average		Average		Intrinsic
		for Grant			Outstanding			Exercise		Remaining		Value
								Price		Contractual
										Term
										(In Years)
	Balance—April 3, 2011		1,457			8,198		$	2.24
	Increase to stock option pool		11,835
	Options granted (weighted-average fair value of $3.72 per share)		(4,172	)		4,172			8.12
	Options exercised		—			(665	)		2.04
	Options canceled		590			(589	)		4.95
	Balance—April 1, 2012		9,710			11,116			4.31
	Increase to stock option pool		3,236
	Options granted (weighted-average fair value of $5.12 per share)		(4,057	)		4,057			12.13
	Options exercised		—			(3,369	)		1.67
	Options canceled		1,309			(1,309	)		8.53
	Balance—March 31, 2013		10,198			10,495			7.65
	Increase to stock option pool		3,399
	Options granted (weighted-average fair value of $5.90 per share)		(1,578	)		1,578			16.14
	Options exercised		—			(3,221	)		4.47
	Options canceled		576			(576	)		9.71
	Balance—March 30, 2014		12,595			8,276		$	10.37		7.87	$	102,072
	March 30, 2014
	Vested and expected to vest					7,600		$	10.17		7.81	$	95,243
	Exercisable—March 30, 2014					2,852		$	7.27		6.85	$	43,999
	March 31, 2013
	Vested and expected to vest					9,323		$	7.31		7.3	$	36,744
	Exercisable—March 31, 2013					3,886		$	3.68		5.09	$	27,703
Summary of Additional Information Regarding Options Outstanding	'
	Additional information regarding options outstanding as of March 2014 is as follows (in thousands except per share amounts):
	Options Outstanding March 2014
	Exercise	Number			Weighted-			Weighted-		Number		Weighted-
	Price	Outstanding			Average			Average Exercise		Exercisable		Average Exercise
					Remaining			Price of Options				Price of Options
					Contractual Life			Outstanding				Exercisable
					(In Years)
	$0.04 - $0.32		154			2.94		$	0.25		154	$	0.25
	$0.70 - $1.28		252			4.35			0.86		252		0.86
	$2.97 - $5.07		617			5.67			3.26		582		3.27
	$5.13 - $9.81		1,999			7.26			6.87		824		6.64
	$10.00 - $15.24		4,042			8.5			11.79		905		11.82
	$15.58 - $22.70		1,212			9.26			18.29		135		17.86
			8,276			7.87		$	10.37		2,852	$	7.27
Weighted-Average Assumptions in Determining Stock-Based Compensation Expense	'
	The Company used the following weighted-average assumptions in determining stock-based compensation expense for option grants made during fiscal 2014, fiscal 2013 and fiscal 2012.
		Fiscal 2014		Fiscal 2013	Fiscal 2012
	Expected Term	4.7 years		5.4 years	5.8 years
	Volatility	40.1% - 41.9%		42.7% - 48.5%	48.2% - 49.51%
	Risk-free interest rate	0.6% - 2.7%		0.6% - 1.3%	0.7% - 2.4%
	Dividend yield	0%		0%	0%
Restricted Stock Unit and Restricted Stock Activity	'
	Restricted stock unit and restricted stock activity of the Company under the Plans are as follows (in thousands, except per share amounts):
	Restricted stock unit and restricted stock activity	Shares			Weighted average
					grant date
					fair value per share
		(in thousands)
	Nonvested at April 1, 2012		118		$	12.47
	Granted		750			12.08
	Vested		(8	)		17.79
	Forfeited		(54	)		12.48
	Nonvested at March 31, 2013		806			12.05
	Granted		2,952			17.28
	Vested		(251	)		11.84
	Forfeited		(182	)		13.62
	Nonvested at March 30, 2014		3,325		$	16.63
Summary of Total Stock-Based Compensation Cost	'
	Total stock-based compensation cost for the Company’s stock plans for fiscal 2014, fiscal 2013 and fiscal 2012 are as follows:
		Fiscal 2014			Fiscal 2013			Fiscal 2012
		(in thousands)
	Cost of revenue	$	1,296		$	649		$	325
	Research and development		6,218			2,753			1,474
	Selling, general and administrative		8,510			5,117			1,889
	Total employee stock-based compensation expense	$	16,024		$	8,519		$	3,688
Common Stock Reserved for Future Issuance	'
	As of March 2014 and March 2013, common stock reserved for future issuance was as follows (in thousands):
		Number of Shares
	Common stock reserved for issuance	March 2014			March 2013
	Stock Plans:
	Outstanding stock options		8,276			10,495
	Outstanding restricted stock units and restricted stock		3,325			806
	Reserved for future equity incentive grants		9,697			9,383
			21,298			20,684
	Purchase Plan		400			—
	Warrants to purchase common stock		7,995			94
	Total common stock reserved for future issuances		29,693			20,778

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Mar. 30, 2014
Income Tax Disclosure [Abstract]	'
Components of Income Before Taxes	'
	The components of income before taxes are as follows:
		Fiscal 2014			Fiscal 2013			Fiscal 2012
		(in thousands)
	United States	$	(3,817	)	$	11,883		$	19,179
	International		10,006			45,123			27,973
		$	6,189		$	57,006		$	47,152
Summary of Income Tax Expense	'
	Income tax expense was comprised of the following:
		Fiscal 2014			Fiscal 2013			Fiscal 2012
		(in thousands)
	Current:
	Federal	$	1,658		$	5,553		$	10,856
	State		1			6			1
	International		179			142			47
		$	1,838		$	5,701		$	10,904
	Deferred:
	Federal	$	(1,856	)	$	(375	)	$	(777	)
	State		—			(6	)		—
	International		88			(19	)		78
			(1,768	)		(400	)		(699	)
	Income tax provision	$	70		$	5,301		$	10,205
Schedule of Provision for Income Taxes Differs from Amount Computed by Applying Statutory Rates	'
	The provision for income taxes differs from the amount computed by applying the statutory rates as follows:
		Fiscal 2014			Fiscal 2013			Fiscal 2012
	Income tax provision at the federal statutory rate		35	%		35	%		35	%
	Research and development credits		(27.3	)		(2.1	)		(1.0	)
	Foreign tax rate differential		(22.0	)		(25.8	)		(14.7	)
	Non deductible stock compensation		19.5			2.2			2.3
	Other		(4.1	)		—			—
	Effective tax rate		1.1	%		9.3	%		21.6	%
Summary of Components of Deferred Tax Asset	'
	The components of the deferred tax asset are as follows:
		March 2014			March 2013
		(in thousands)
	Deferred tax asset:
	Accrued expenses and reserves	$	1,769		$	841
	Stock based compensation		2,167			1,198
	Research and development credits		4,115			1,618
	Net operating loss carryforwards		1,001			1,011
	Fixed Assets		(44	)		179
	Valuation allowance		(3,761	)		(2,481	)
	Deferred tax asset	$	5,247		$	2,366
Reconciliation of Change in Unrecognized Tax Benefits	'
	A reconciliation of the change in unrecognized tax benefits is as follows:
		For the Period April 3,
		2011 to March 30, 2014
		(in thousands)
	Balance at April 3, 2011	$	1,056
	Increases in unrecognized tax benefits		2,799
	Balance at April 1, 2012	$	3,855
	Increases in unrecognized tax benefits		3,961
	Balance at March 31, 2013	$	7,816
	Increases in unrecognized tax benefits		2,797
	Balance at March 30, 2014	$	10,613

Acquisition_Tables

Acquisition (Tables)	12 Months Ended
	Mar. 30, 2014
Business Combinations [Abstract]	'
Summary of Preliminary Purchase Price of Assets Acquired and Liabilities Assumed	'
	The following table summarizes the preliminary purchase price of the assets acquired and the liabilities assumed as of March 30, 2014, the completion of the acquisition.
		Total Amount
	Assets Acquired	(in thousands)
	Inventories	$	5,107
	Property and equipment, net		4,339
	Intangible assets:
	Developed Technology		28,520
	In-Process Research & Development		7,330
	Customer Relationships		1,560
	Goodwill		50,952
	Total assets acquired		97,808
	Total purchase price (net of $2.2 million of contingent expense reimbursements)	$	97,808
Summary of Fair Value and Estimated Useful Lives of Intangible Assets	'
	The following table represents the estimated useful lives of developed technology and customer relationships:
		Fair Value		Estimated
		Amount		Useful Life
		(in thousands)		(in years)
	Developed Technology	$	28,520		6
	Customer Relationships	$	1,560		7
Summary of Unaudited Proforma of Combined Financial Information	'
	The unaudited pro forma combined supplemental information does not include the effects of any cost savings from operating efficiencies or synergies that may result from the acquisition.
		Fiscal 2014		Fiscal 2013
		(in thousands)
	Revenues	$	276,592	$	275,414
	Net income	$	4,051	$	46,977

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Mar. 30, 2014
Goodwill And Intangible Assets Disclosure [Abstract]	'
Summary of Intangible Assets and Accumulated Amortization	'
	The following table represents intangible assets and accumulated amortization:
		Mar-14
		(in thousands)
		Gross		Accumulated		Net
				Amortization
	Developed Technology	$	28,520	$	1,980	$	,26,540
	Customer Relationships		1,560		93		1,467
	Total intangible assets subject to amortization	$	30,080	$	2,073	$	28,007
Estimated Future Amortization Expense Related to Intangible Assets	'
	The estimated future amortization expense related to intangible assets at March 30, 2014, is as follows:
	Fiscal Year	Estimated
		Amortization
		(in thousands)
	2015	$	4,976
	2016		4,976
	2017		4,976
	2018		4,976
	2019		4,976
	Thereafter		3,127
	Total	$	28,007

Quarterly_Financial_Data_Unaud1

Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Mar. 30, 2014
Quarterly Financial Information Disclosure [Abstract]	'
Summary of Quarterly Financial Data	'
	Fiscal Year 2014:		Three Months Ended
			June  30,			September  29,			December  29,			March  30,
			2013			2013			2013			2014
			(in thousands)
	Net revenue		$	55,910		$	70,941		$	66,684		$	58,998
	Cost of revenue			26,591			34,364			35,094			31,675
	Gross profit			29,319			36,577			31,590			27,323
	Operating expenses:
	Research and development			8,114			9,810			14,522			15,985
	Selling, general and administrative			9,155			11,424			15,663			15,102
	Litigation settlement			—			—			14,500			500
	Total operating expenses			17,269			21,234			44,685			31,587
	Income (loss) from operations			12,050			15,343			(13,095	)		(4,264	)
	Interest (expense)			—			—			(1,464	)		(2,548	)
	Other income (expense), net			80			210			(219	)		96
	Other income (expense), net			80			210			(1,683	)		(2,452	)
	Income (loss) before income taxes			12,130			15,553			(14,778	)		(6,716	)
	Income tax (benefit) provision			1,808			1,945			(2,599	)		(1,084	)
	Net income (loss)		$	10,322		$	13,608		$	(12,179	)	$	(5,632	)
	Basic		$	0.12		$	0.16		$	(0.14	)	$	(0.06	)
	Diluted		$	0.12		$	0.15		$	(0.14	)	$	(0.06	)
	Weighted average shares outstanding in computing net income per share allocable to common stockholders:
	Basic			85,038			86,289			87,047			87,691
	Diluted			87,914			89,778			87,047			87,691
	Fiscal Year 2013:		Three Months Ended
			July 1,			September  30,			December 30,			March  31,
			2012			2012			2012 (1)			2013
			(in thousands)
	Net revenue		$	39,202		$	55,294		$	58,929		$	55,209
	Cost of revenue			17,639			24,923			27,723			27,652
	Gross profit			21,563			30,371			31,206			27,557
	Operating expenses:
	Research and development			5,655			5,918			6,712			6,363
	Selling, general and administrative			6,258			7,202			8,428			7,503
	Total operating expenses			11,913			13,120			15,140			13,866
	Income from operations			9,650			17,251			16,066			13,691
	Interest (expense)			(1	)		(1	)		—			—
	Other income, net			38			55			98			159
	Other income, net			37			54			98			159
	Income before income taxes			9,687			17,305			16,164			13,850
	Income tax (benefit) provision			2,036			3,641			(654	)		278
	Net income		$	7,651		$	13,664		$	16,818		$	13,572
	Basic		$	0.09		$	0.17		$	0.2		$	0.16
	Diluted		$	0.09		$	0.16		$	0.19		$	0.15
	Weighted average shares outstanding in computing net income per share allocable to common stockholders:
	Basic			81,184			82,429			83,218			84,109
	Diluted			87,080			87,257			87,350			87,741
	-1	The three months ended December 30, 2012 includes an income tax benefit of $2.2 million ($0.03 and $0.02 basic and diluted earnings per share, respectively), primarily due to changes in estimate of earnings attributable to domestic versus foreign operations related to prior years.

Organization_and_Summary_of_Si3

Organization and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
	Segment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	'	'	'
Incorporation month and year	'2003-06	'	'
Foreign currency losses	$260,000	$51,000	$43,000
Other than temporary impairments	0	0	0
Allowance for doubtful accounts	0	0	'
Incurred charges related to reserve for sales returns and allowances	134,000	84,000	132,000
Balances for the reserve for sales returns and allowances	91,000	21,000	'
Losses on deposits of cash and cash equivalents	0	0	0
Losses on accounts receivables	0	0	0
Inventory Write-down amount	'	($3,000,000)	$2,200,000
Operating segment by designing, developing, manufacturing and marketing linear and mixed-signal integrated circuits	1	'	'
Leasehold Improvements [Member]	'	'	'
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	'	'	'
Estimated useful lives for leasehold improvements	'Over the shorter of the estimated useful life or the remaining lease term.	'	'
Accounts Receivable [Member]	'	'	'
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	'	'	'
Number of major customers	3	4	'
Minimum percentage of accounts receivable balance required to be significant customers	10.00%	10.00%	'
Accounts Receivable [Member] | Customer One [Member]	'	'	'
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	'	'	'
Percentage of accounts receivable	28.00%	17.00%	'
Accounts Receivable [Member] | Customer Two [Member]	'	'	'
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	'	'	'
Percentage of accounts receivable	19.00%	12.00%	'
Accounts Receivable [Member] | Customer Three [Member]	'	'	'
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	'	'	'
Percentage of accounts receivable	19.00%	10.00%	'
Accounts Receivable [Member] | Customer Four [Member]	'	'	'
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	'	'	'
Percentage of accounts receivable	'	10.00%	'
Net Revenue [Member]	'	'	'
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	'	'	'
Number of major customers	1	3	3
Minimum percentage of revenue balance required to be significant customers	10.00%	10.00%	10.00%
Net Revenue [Member] | Customer One [Member]	'	'	'
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	'	'	'
Percentage of net revenue	35.00%	24.00%	31.00%
Net Revenue [Member] | Customer Two [Member]	'	'	'
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	'	'	'
Percentage of net revenue	'	18.00%	15.00%
Net Revenue [Member] | Customer Three [Member]	'	'	'
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	'	'	'
Percentage of net revenue	'	11.00%	12.00%
Maximum [Member]	'	'	'
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	'	'	'
Period of Company's warranty agreements	'3 years	'	'
Maximum [Member] | Production Equipment [Member]	'	'	'
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	'	'	'
Estimated useful lives	'5 years	'	'
Maximum [Member] | Lab Equipment, Computer Equipment and Software [Member]	'	'	'
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	'	'	'
Estimated useful lives	'5 years	'	'
Minimum [Member] | Production Equipment [Member]	'	'	'
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	'	'	'
Estimated useful lives	'4 years	'	'
Minimum [Member] | Lab Equipment, Computer Equipment and Software [Member]	'	'	'
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	'	'	'
Estimated useful lives	'3 years	'	'

Organization_and_Summary_of_Si4

Organization and Summary of Significant Accounting Policies - Summary of Activity Related to Product Warranty Liability (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Movement In Standard And Extended Product Warranty Increase Decrease [Roll Forward]	'	'	'
Beginning balance	$123	$361	$697
Provision for warranty for the year	59	60	301
Accruals related to changes in estimate	-71	-262	-547
Less: actual warranty costs	-31	-36	-90
Ending balance	$80	$123	$361

Organization_and_Summary_of_Si5

Organization and Summary of Significant Accounting Policies - Calculation of Basic and Diluted Net Income Per Share (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 30, 2014	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 30, 2012	Jul. 01, 2012	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Basic:	'	'	'	'	'	'	'	'	'	'	'
Net income	($5,632)	($12,179)	$13,608	$10,322	$13,572	$16,818	$13,664	$7,651	$6,119	$51,705	$36,947
Non-cumulative dividends on convertible preferred stock	'	'	'	'	'	'	'	'	'	'	-1,915
Undistributed earnings allocable to convertible preferred stockholders	'	'	'	'	'	'	'	'	'	'	-18,703
Net income allocable to common stockholders	'	'	'	'	'	'	'	'	6,119	51,705	16,329
Diluted:	'	'	'	'	'	'	'	'	'	'	'
Net income	-5,632	-12,179	13,608	10,322	13,572	16,818	13,664	7,651	6,119	51,705	36,947
Non-cumulative dividends on convertible preferred stock	'	'	'	'	'	'	'	'	'	'	-1,967
Undistributed earnings allocable to convertible preferred stockholders	'	'	'	'	'	'	'	'	'	'	-17,600
Net income allocable to common stockholders-diluted	'	'	'	'	'	'	'	'	$6,119	$51,705	$17,380
Basic shares:	'	'	'	'	'	'	'	'	'	'	'
Weighted average shares used in computing basic net income per common share	87,691	87,047	86,289	85,038	84,109	83,218	82,429	81,184	86,520	82,738	41,614
Diluted shares:	'	'	'	'	'	'	'	'	'	'	'
Weighted average shares used in computing basic net income per common share	87,691	87,047	86,289	85,038	84,109	83,218	82,429	81,184	86,520	82,738	41,614
Effect of potentially dilutive securities:	'	'	'	'	'	'	'	'	'	'	'
Stock options and unvested restricted stock	'	'	'	'	'	'	'	'	3,367	4,445	5,229
Common stock warrants	'	'	'	'	'	'	'	'	41	176	168
Weighted average shares used in computing diluted net income per common share	87,691	87,047	89,778	87,914	87,741	87,350	87,257	87,080	89,928	87,359	47,011
Net income per common share:	'	'	'	'	'	'	'	'	'	'	'
Basic	($0.06)	($0.14)	$0.16	$0.12	$0.16	$0.20	$0.17	$0.09	$0.07	$0.62	$0.39
Diluted	($0.06)	($0.14)	$0.15	$0.12	$0.15	$0.19	$0.16	$0.09	$0.07	$0.59	$0.37

Organization_and_Summary_of_Si6

Organization and Summary of Significant Accounting Policies - Securities Excluded from Computation of Diluted Net Income Per Common Share (Detail)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'
Total antidilutive securities	3,330	4,608	3,367
Employee Stock Options [Member]	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'
Total antidilutive securities	1,992	4,498	3,365
Unvested Restricted Stock Units [Member]	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'
Total antidilutive securities	1,338	110	2

Organization_and_Summary_of_Si7

Organization and Summary of Significant Accounting Policies - Property and Equipment by Country (Detail) (USD $)	Mar. 30, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Long-lived assets	$25,239	$8,650
Taiwan [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Long-lived assets	16,902	6,190
United States [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Long-lived assets	7,605	2,333
Other [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Long-lived assets	$732	$127

Organization_and_Summary_of_Si8

Organization and Summary of Significant Accounting Policies - Net Revenues from Unaffiliated Customers by Country (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 30, 2012	Jul. 01, 2012	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net revenues from unaffiliated customers	$58,998	$66,684	$70,941	$55,910	$55,209	$58,929	$55,294	$39,202	$252,533	$208,634	$152,967
Korea [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net revenues from unaffiliated customers	'	'	'	'	'	'	'	'	112,880	69,874	39,827
Japan [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net revenues from unaffiliated customers	'	'	'	'	'	'	'	'	45,493	65,663	54,754
China [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net revenues from unaffiliated customers	'	'	'	'	'	'	'	'	43,796	14,742	11,855
Taiwan [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net revenues from unaffiliated customers	'	'	'	'	'	'	'	'	18,737	39,203	34,040
United States [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net revenues from unaffiliated customers	'	'	'	'	'	'	'	'	24,681	16,667	11,916
Other [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net revenues from unaffiliated customers	'	'	'	'	'	'	'	'	$6,946	$2,485	$575

Cash_Equivalents_and_Available2

Cash Equivalents and Available-for-sale Investments - Additional Information (Detail) (USD $)	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012	Apr. 03, 2011	Mar. 31, 2013	Mar. 30, 2014	Mar. 31, 2013	Mar. 30, 2014	Mar. 31, 2013	Mar. 30, 2014	Mar. 31, 2013
					Money Market Funds [Member]	Minimum [Member]	Minimum [Member]	Maximum [Member]	Maximum [Member]	Foreign Subsidiaries [Member]	Foreign Subsidiaries [Member]
Cash and Cash Equivalents [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Cash	$15,300,000	$77,900,000	'	'	'	'	'	'	'	'	'
Cash equivalents	10,700,000	'	'	'	22,900,000	'	'	'	'	'	'
Cash and cash equivalents	26,025,000	100,843,000	153,643,000	28,795,000	'	'	'	'	'	9,800,000	60,700,000
Short-term investments available-for-sale	91,300,000	77,000,000	'	'	'	'	'	'	'	'	'
Long-term investments available-for-sale	128,800,000	22,400,000	'	'	'	'	'	'	'	'	'
Investments available-for-sale total	220,100,000	99,400,000	'	'	'	'	'	'	'	'	'
Investment maturity period	'	'	'	'	'	'1 Year	'1 Year	'2 Years	'5 Years	'	'
Transfers of assets measured at fair value between Level 1 and Level 2	$0	$0	'	'	'	'	'	'	'	'	'

Cash_Equivalents_and_Available3

Cash Equivalents and Available-for-sale Investments - Assets Measured at Fair Value on Recurring Basis (Detail) (USD $)	Mar. 30, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated FMV	$91,307	$77,040
Fair Value, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	230,719	122,342
Fair value of assets	230,719	122,342
Amortized Cost	220,121	99,405
Gross Unrealized Gain	9	79
Gross Unrealized Loss	-68	-2
Estimated FMV	220,062	99,482
Fair Value, Recurring [Member] | Money Market Funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	10,657	22,860
Fair Value, Recurring [Member] | Corporate Notes and Bonds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	204,683	94,485
Amortized Cost	204,747	94,407
Gross Unrealized Gain	'	78
Gross Unrealized Loss	-64	'
Estimated FMV	204,683	94,485
Fair Value, Recurring [Member] | Municipal Notes and Bonds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	3,895	'
Amortized Cost	3,888	'
Gross Unrealized Gain	7	'
Gross Unrealized Loss	'	'
Estimated FMV	3,895	'
Fair Value, Recurring [Member] | Commercial Paper [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	'	2,998
Fair value of assets	8,988	'
Amortized Cost	8,986	2,997
Gross Unrealized Gain	2	1
Gross Unrealized Loss	'	'
Estimated FMV	8,988	2,998
Fair Value, Recurring [Member] | U.S. Agency Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	2,496	1,999
Amortized Cost	2,500	2,001
Gross Unrealized Gain	'	'
Gross Unrealized Loss	-4	-2
Estimated FMV	2,496	1,999
Fair Value, Recurring [Member] | Cash Equivalents [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	10,657	22,860
Fair Value, Recurring [Member] | Short-term Investments [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	91,307	77,040
Fair Value, Recurring [Member] | Long-term Investments [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	128,755	22,442
Fair Value, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	10,657	22,860
Fair Value, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Money Market Funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	10,657	22,860
Fair Value, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Corporate Notes and Bonds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	'	'
Fair Value, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Municipal Notes and Bonds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	'	'
Fair Value, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Commercial Paper [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	'	'
Fair value of assets	'	'
Fair Value, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | U.S. Agency Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	'	'
Fair Value, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Cash Equivalents [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	10,657	22,860
Fair Value, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Short-term Investments [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	'	'
Fair Value, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Long-term Investments [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	'	'
Fair Value, Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	220,062	99,482
Fair Value, Recurring [Member] | Significant Other Observable Inputs Level 2 [Member] | Money Market Funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	'	'
Fair Value, Recurring [Member] | Significant Other Observable Inputs Level 2 [Member] | Corporate Notes and Bonds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	204,683	94,485
Fair Value, Recurring [Member] | Significant Other Observable Inputs Level 2 [Member] | Municipal Notes and Bonds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	3,895	'
Fair Value, Recurring [Member] | Significant Other Observable Inputs Level 2 [Member] | Commercial Paper [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	'	2,998
Fair value of assets	8,988	'
Fair Value, Recurring [Member] | Significant Other Observable Inputs Level 2 [Member] | U.S. Agency Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	2,496	1,999
Fair Value, Recurring [Member] | Significant Other Observable Inputs Level 2 [Member] | Cash Equivalents [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	'	'
Fair Value, Recurring [Member] | Significant Other Observable Inputs Level 2 [Member] | Short-term Investments [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	91,307	77,040
Fair Value, Recurring [Member] | Significant Other Observable Inputs Level 2 [Member] | Long-term Investments [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	128,755	22,442
Fair Value, Recurring [Member] | Significant Other Unobservable Inputs Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	'	'
Fair Value, Recurring [Member] | Significant Other Unobservable Inputs Level 3 [Member] | Money Market Funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	'	'
Fair Value, Recurring [Member] | Significant Other Unobservable Inputs Level 3 [Member] | Corporate Notes and Bonds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	'	'
Fair Value, Recurring [Member] | Significant Other Unobservable Inputs Level 3 [Member] | Municipal Notes and Bonds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	'	'
Fair Value, Recurring [Member] | Significant Other Unobservable Inputs Level 3 [Member] | Commercial Paper [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	'	'
Fair value of assets	'	'
Fair Value, Recurring [Member] | Significant Other Unobservable Inputs Level 3 [Member] | U.S. Agency Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	'	'
Fair Value, Recurring [Member] | Significant Other Unobservable Inputs Level 3 [Member] | Cash Equivalents [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	'	'
Fair Value, Recurring [Member] | Significant Other Unobservable Inputs Level 3 [Member] | Short-term Investments [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	'	'
Fair Value, Recurring [Member] | Significant Other Unobservable Inputs Level 3 [Member] | Long-term Investments [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of assets	'	'

Balance_Sheet_Details_Inventor

Balance Sheet Details - Inventories (Detail) (USD $)	Mar. 30, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Work in progress	$58,641	$18,803
Finished goods	14,391	4,959
Total Inventories	$73,032	$23,762

Balance_Sheet_Details_Prepaid_

Balance Sheet Details - Prepaid Expenses and Other Current Assets (Detail) (USD $)	Mar. 30, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Balance Sheet Related Disclosures [Abstract]	'	'
Prepaid expenses	$3,495	$2,209
Tax receivable	5,932	6,374
Other receivables	5,356	87
Deferred tax assets	2,487	951
Advance to vendors	1,026	2,824
Other current assets	1,291	857
Total prepaid expenses and other current assets	$19,587	$13,302

Balance_Sheet_Details_Property

Balance Sheet Details - Property and Equipment (Detail) (USD $)	Mar. 30, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Subtotal	$36,441	$15,552
Accumulated depreciation	-11,202	-6,902
Property and equipment, net	25,239	8,650
Production and Lab Equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Subtotal	25,890	11,654
Computer Equipment and Software [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Subtotal	4,335	1,124
Equipment Under Construction [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Subtotal	2,298	1,851
Leasehold Improvements and Furniture and Fixtures [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Subtotal	$3,918	$923

Balance_Sheet_Details_Addition

Balance Sheet Details - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Balance Sheet Related Disclosures [Abstract]	'	'	'
Depreciation expense	$4,492	$1,998	$1,992

Balance_Sheet_Details_Accrued_

Balance Sheet Details - Accrued Liabilities (Detail) (USD $)	Mar. 30, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Accrued Liabilities [Line Items]	'	'
Payroll-related expenses	$4,207	$2,777
Bonuses	3,019	2,120
Legal fees	2,527	884
Deferred revenue	800	'
Income tax payable	117	96
Other accrued liabilities	3,157	1,876
Total accrued liabilities	14,985	7,753
Convertible Senior Notes [Member]	'	'
Accrued Liabilities [Line Items]	'	'
Accrued contractual coupon interest payable on convertible senior notes	$1,158	'

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended		12 Months Ended
	Feb. 09, 2014	Mar. 30, 2014	Dec. 29, 2013	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012	Apr. 03, 2011
				Claim
Other Commitments [Line Items]	'	'	'	'	'	'	'
Non-cancelable operating leases terms	'	'	'	'The Company has non-cancelable operating leases for its facilities through fiscal year 2020.	'	'	'
Operating leases, expiration date	'	'	'	'2020	'	'	'
Rental expense	'	'	'	$5,600,000	$2,000,000	$1,700,000	'
Contributions	'	'	'	43,000	'	'	'
Patent infringement complaints filed dates, description	'	'	'	'On May 16, 2012, and again on March 11, 2013 STMicroelectronics, Inc. ("STI") filed patent infringement complaints ("ST Microelectronics Patent Litigation I and II") against the Company, alleging infringement of certain of their patents (collectively, the "Asserted Patents").	'	'	'
Minimum number of claims of Asserted Patents	'	'	'	1	'	'	'
Litigation and proceedings settlement	15,000,000	'	'	'	'	'	'
Pre-tax charge	'	500,000	14,500,000	15,000,000	'	'	'
Indemnification costs	'	'	'	'	$0	$0	$0
ST Microelectronics Patent Litigation I [Member]	'	'	'	'	'	'	'
Other Commitments [Line Items]	'	'	'	'	'	'	'
Patent infringement complaints filed date	'	'	'	16-May-12	'	'	'
ST Microelectronics Patent Litigation II [Member]	'	'	'	'	'	'	'
Other Commitments [Line Items]	'	'	'	'	'	'	'
Patent infringement complaints filed date	'	'	'	11-Mar-13	'	'	'

Commitments_and_Contingencies_2

Commitments and Contingencies - Future Minimum Lease Payments under Operating Leases (Detail) (USD $)	Mar. 30, 2014
In Thousands, unless otherwise specified
Leases [Abstract]	'
2015	$3,304
2016	3,791
2017	3,876
2018	3,732
2019	3,844
Beyond	2,911
Total	$21,458

Convertible_Senior_Notes_Addit

Convertible Senior Notes - Additional Information (Detail) (USD $)

12 Months Ended

0 Months Ended

1 Months Ended

12 Months Ended

12 Months Ended

Share data in Millions, except Per Share data, unless otherwise specified

Mar. 30, 2014

Mar. 30, 2014

Nov. 30, 2013

Nov. 07, 2013

Nov. 07, 2013

Nov. 07, 2013

Mar. 30, 2014

Mar. 30, 2014

Mar. 30, 2014

Mar. 30, 2014

Mar. 30, 2014

Mar. 30, 2014

Mar. 30, 2014

Mar. 30, 2014

Convertible Senior Notes Due 2018 [Member]

Convertible Senior Notes Due 2018 [Member]

Warrant Sold [Member]

Convertible Notes Hedges Purchased [Member]

Convertible Notes Hedges Purchased [Member]

Significant Other Observable Inputs Level 2 [Member]

Equity Component [Member]

Debt Discount [Member]

Other Non-current Assets [Member]

Coupon Rate Plus [Member]

Non-Cash Accretion Expense [Member]

Condition One [Member]

Second Condition [Member]

Hedge_Strategies

Days

Days

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible senior notes, issuance date

'2013-11

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible senior notes, principal amount

$175,000,000

'

$175,000,000

'

'

'

'

'

'

'

'

'

'

'

Convertible senior notes, maturity date

1-Nov-18

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible senior notes, Stated interest rate

'

1.75%

1.75%

'

'

'

'

'

'

'

'

'

'

'

Convertible senior notes, interest payment terms

'The Notes pay interest in cash semi-annually (May and November) at a rate of 1.75% per annum.

'

'

'

'

'

'

'

'

'

'

'

'

'

Net proceeds after issuance costs

169,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible senior notes, terms of conversion

'On or after August 1, 2018 until the maturity date, the Notes may be converted at the option of the holders. Holders may convert the Notes at their option prior to August 1, 2018 only under the following circumstances: 1) During any calendar quarter commencing after the calendar quarter ending on March 31, 2014 (and only during such calendar quarter), if the last reported sale price of the Companybs common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day; 2) During the five business day period after any five consecutive trading day period in which the btrading priceb per $1,000 principal amount of notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of our common stock and the conversion rate on each such trading day; or 3) Upon the occurrence of specified corporate events, including if there is a fundamental change.

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible senior notes, conversion date

1-Aug-18

'

'

'

'

'

'

'

'

'

'

'

'

'

Threshold trading days

'

'

'

'

'

'

'

'

'

'

'

'

20

5

Threshold consecutive trading days

'

'

'

'

'

'

'

'

'

'

'

'

'30 days

'5 days

Threshold percentage of conversion price

'

'

'

'

'

'

'

'

'

'

'

'

130.00%

98.00%

Convertible senior notes, face amount per note

1,000

'

'

'

'

'

'

'

'

'

'

'

'

1,000

Convertible senior notes, conversion ratio

45.683

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible senior notes, conversion price

$21.89

'

'

'

'

'

'

'

'

'

'

'

'

'

Notes issued

135,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible senior notes, debt discount

39,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-convertible debt borrowing rate

7.30%

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible senior notes, issuance cost

'

'

'

'

'

'

'

2,500,000

3,000,000

250,000

'

'

'

'

Convertible senior notes, remaining amortization period

'4 years 7 months 6 days

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible senior notes, effective interest rate description

'The effective interest rate of the Notes is 7.84% per annum (1.75% coupon rate plus 6.09% of non-cash accretion expense).

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible senior notes, effective interest rate

7.84%

'

'

'

'

'

'

'

'

'

1.75%

6.09%

'

'

Call options

'

'

'

8

8

8

'

'

'

'

'

'

'

'

Common stock at exercise price

'

'

'

28.66

21.89

21.89

'

'

'

'

'

'

'

'

Conversion of shares in convertible note

'

'

'

'

'

0.045683

'

'

'

'

'

'

'

'

Aggregate price for convertible Note Hedge

39,118,000

'

'

'

39,100,000

'

'

'

'

'

'

'

'

'

Proceeds from call options

25,643,000

'

'

25,600,000

'

'

'

'

'

'

'

'

'

'

Fair value of convertible notes

'

'

'

'

'

'

$216,900,000

'

'

'

'

'

'

'

Convertible_Senior_Notes_Summa

Convertible Senior Notes - Summary of Principal Amounts and Related Unamortized Discount on Notes (Detail) (USD $)	Mar. 30, 2014
In Thousands, unless otherwise specified
Debt Disclosure [Abstract]	'
Principal amount of the Notes	$175,000
Unamortized discount on the Notes	39,417
Net carrying value	$135,583

Convertible_Senior_Notes_Sched

Convertible Senior Notes - Schedule of Interest Expense Recognized Related to Notes (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014
Debt Disclosure [Abstract]	'
Contractual coupon interest expense	$1,158
Accretion of debt discount	2,835
Amortization of debt issuance costs	19
Total interest expense related to the Notes	$4,012

Convertible_Senior_Notes_Sched1

Convertible Senior Notes - Schedule of Aggregate Future Principal Debt Maturities (Detail) (USD $)	Mar. 30, 2014
In Thousands, unless otherwise specified
Debt Disclosure [Abstract]	'
2015 - 2018	'
2019	175,000
Total	$175,000

Stockholders_Equity_Additional

Stockholders' Equity - Additional Information (Detail) (USD $)

12 Months Ended

1 Months Ended

12 Months Ended

Mar. 30, 2014

Mar. 31, 2013

Apr. 01, 2012

Mar. 31, 2013

Jul. 31, 2011

Mar. 30, 2014

Mar. 30, 2014

Mar. 31, 2013

Mar. 31, 2013

Mar. 30, 2014

Mar. 31, 2013

Apr. 01, 2012

Mar. 30, 2014

Mar. 31, 2013

Mar. 31, 2013

Mar. 30, 2014

Chief Executive Officer [Member]

2011 Stock Incentive Plan [Member]

2013 Employee Stock Purchase Plan [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Employee Stock Options [Member]

Employee Stock Options [Member]

Employee Stock Options [Member]

Market-Based Awards [Member]

Market-Based Awards [Member]

Market-Based Awards [Member]

Restricted Stock Units and Restricted Stock [Member]

Maximum [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock outstanding percentage

'

'

'

'

4.00%

'

'

'

'

'

'

'

'

'

'

'

Increase and decrease of common stock

'

'

'

'

3,400,000

'

'

'

'

'

'

'

'

'

'

'

Reserved for issuance of shares

21,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Company's common stock for owners, more than

'

'

'

'

'

'

10.00%

'

'

'

'

'

'

'

'

'

Stock options vesting period

'

'10 years

'

'4 years

'

'

'

'5 years

'6 years 2 months 12 days

'4 years

'

'

'

'

'

'

Nonqualified stock options may be granted at an exercise price, not less than

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock, for an exercise price of not less than

110.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock options expiration period

'10 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum employee subscription percentage

'

'

'

'

'

10.00%

'

'

'

'

'

'

'

'

'

'

Purchase Plan description

'

'

'

'

'

'The purchase price of stock under the Purchase Plan is equal to 85% of the lower of (i) the fair market value of the Company's common stock on the first day of each offering period, or (ii) the fair market value of the Company's common stock on the purchase date (as defined in the Purchase Plan). Each offering period consists of one purchase period of approximately six months duration.

'

'

'

'

'

'

'

'

'

'

Purchase price of stock under the Purchase Plan

'

'

'

'

'

85.00%

'

'

'

'

'

'

'

'

'

'

Shares purchased

'

'

'

'

'

0

'

'

'

'

'

'

'

'

'

'

Shares reserved for future issuance under the Purchase Plan

29,693,000

20,778,000

'

'

'

400,000

'

'

'

'

'

'

'

'

'

'

Compensation expense recognized

$16,024,000

$8,519,000

$3,688,000

'

'

$200,000

'

'

'

'

'

'

'

'

'

'

Aggregate intrinsic value of the stock options exercised

39,400,000

36,100,000

5,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Unamortized stock-based compensation expense, reduced for estimated forfeitures and related to non-vested options

19,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrecognized expense of stock option, period for recognition

'5 years

'

'

'

'

'

'

'

'

'2 years 8 months 12 days

'

'

'

'

'

'3 years 6 months

Number of shares to be purchased under granted options

'

'

'

622,115

'

'

'

'

'

'

'

'

'

'

'

'

Price per shares to be purchased under granted options

'

'

'

$11.57

'

'

'

'

'

'

'

'

'

'

'

'

Minimum stock price cross thresholds, one

'

'

'

$15

'

'

'

'

'

'

'

'

'

'

'

'

Minimum stock price cross thresholds, two

'

'

'

$17.50

'

'

'

'

'

'

'

'

'

'

'

'

Minimum stock price cross thresholds, three

'

'

'

$20

'

'

'

'

'

'

'

'

'

'

'

'

Number of days to determine closing price under condition

'

'

'

'20 days

'

'

'

'

'

'

'

'

'

'

'

'

Assumptions in estimating the fair value of the shares, expected volatility

'

'

'

'

'

'

'

'

'

'

'

'

'

46.50%

'

'

Assumptions in estimating the fair value of the shares, expected dividends

'

'

'

'

'

'

'

'

'

0.00%

0.00%

0.00%

'

0.00%

'

'

Assumptions in estimating the fair value of the shares, risk-free rate

'

'

'

'

'

'

'

'

'

'

'

'

'

0.80%

'

'

Weighted-average fair value

$5.90

$5.12

$3.72

'

'

'

'

'

'

'

'

'

'

'

$4.87

'

Number of options exercised

3,221,000

3,369,000

665,000

'

'

'

'

'

'

'

'

'

0

0

'

'

Total unrecognized compensation cost

$1,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$50,600,000

Stockholders_Equity_Stock_Opti

Stockholders' Equity - Stock Option Activities (Detail) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'	'
Options Available for Grant, Beginning Balance	10,198	9,710	1,457
Options Available for Grant, Increase to stock option pool	3,399	3,236	11,835
Options Available for Grant, Options granted	-1,578	-4,057	-4,172
Options Available for Grant, Options exercised	'	'	'
Options Available for Grant, Options canceled	576	1,309	590
Options Available for Grant, Ending Balance	12,595	10,198	9,710
Options Issued and Outstanding, Beginning Balance	10,495	11,116	8,198
Options Issued and Outstanding, Options granted	1,578	4,057	4,172
Options Issued and Outstanding, Options exercised	-3,221	-3,369	-665
Options Issued and Outstanding, Options canceled	-576	-1,309	-589
Options Issued and Outstanding, Ending Balance	8,276	10,495	11,116
Weighted-Average Exercise Price, Beginning Balance	$7.65	$4.31	$2.24
Options Issued and Outstanding, Vested and expected to vest	7,600	9,323	'
Weighted-Average Exercise Price, Options granted	$16.14	$12.13	$8.12
Options Issued and Outstanding, Exercisable	2,852	3,886	'
Weighted-Average Exercise Price, Options exercised	$4.47	$1.67	$2.04
Weighted-Average Exercise Price, Options canceled	$9.71	$8.53	$4.95
Weighted-Average Exercise Price, Ending Balance	$10.37	$7.65	$4.31
Weighted-Average Exercise Price, Vested and expected to vest	$10.17	$7.31	'
Weighted-Average Exercise Price, Exercisable	$7.27	$3.68	'
Weighted-Average Remaining Contractual Term (In Years), Ending Balance	'7 years 10 months 13 days	'	'
Weighted-Average Remaining Contractual Term (In Years), Vested and expected to vest	'7 years 9 months 22 days	'7 years 3 months 18 days	'
Weighted-Average Remaining Contractual Term (In Years), Exercisable	'6 years 10 months 6 days	'5 years 1 month 2 days	'
Aggregate Intrinsic Value, Ending Balance	$102,072	'	'
Aggregate Intrinsic Value, Vested and expected to vest	95,243	36,744	'
Aggregate Intrinsic Value, Exercisable	$43,999	$27,703	'

Stockholders_Equity_Stock_Opti1

Stockholders' Equity - Stock Option Activities (Parenthetical) (Detail) (USD $)	12 Months Ended
	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'	'
Weighted-average fair value per share	$5.90	$5.12	$3.72

Stockholders_Equity_Summary_of

Stockholders' Equity - Summary of Additional Information Regarding Options Outstanding (Detail) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 30, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Number Outstanding	8,276
Weighted-Average Remaining Contractual Life (In Years)	'7 years 10 months 13 days
Weighted-Average Exercise Price of Options Outstanding	$10.37
Number Exercisable	2,852
Weighted-Average Exercise Price of Options Exercisable	$7.27
0.04 - 0.32 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Exercise Price Lower Limit	$0.04
Exercise Price Upper Limit	$0.32
Number Outstanding	154
Weighted-Average Remaining Contractual Life (In Years)	'2 years 11 months 9 days
Weighted-Average Exercise Price of Options Outstanding	$0.25
Number Exercisable	154
Weighted-Average Exercise Price of Options Exercisable	$0.25
0.70 - 1.28 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Exercise Price Lower Limit	$0.70
Exercise Price Upper Limit	$1.28
Number Outstanding	252
Weighted-Average Remaining Contractual Life (In Years)	'4 years 4 months 6 days
Weighted-Average Exercise Price of Options Outstanding	$0.86
Number Exercisable	252
Weighted-Average Exercise Price of Options Exercisable	$0.86
2.97 - 5.07 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Exercise Price Lower Limit	$2.97
Exercise Price Upper Limit	$5.07
Number Outstanding	617
Weighted-Average Remaining Contractual Life (In Years)	'5 years 8 months 1 day
Weighted-Average Exercise Price of Options Outstanding	$3.26
Number Exercisable	582
Weighted-Average Exercise Price of Options Exercisable	$3.27
5.13 - 9.81 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Exercise Price Lower Limit	$5.13
Exercise Price Upper Limit	$9.81
Number Outstanding	1,999
Weighted-Average Remaining Contractual Life (In Years)	'7 years 3 months 4 days
Weighted-Average Exercise Price of Options Outstanding	$6.87
Number Exercisable	824
Weighted-Average Exercise Price of Options Exercisable	$6.64
10.00 - 15.24 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Exercise Price Lower Limit	$10
Exercise Price Upper Limit	$15.24
Number Outstanding	4,042
Weighted-Average Remaining Contractual Life (In Years)	'8 years 6 months
Weighted-Average Exercise Price of Options Outstanding	$11.79
Number Exercisable	905
Weighted-Average Exercise Price of Options Exercisable	$11.82
15.58 - 22.70 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Exercise Price Lower Limit	$15.58
Exercise Price Upper Limit	$22.70
Number Outstanding	1,212
Weighted-Average Remaining Contractual Life (In Years)	'9 years 3 months 4 days
Weighted-Average Exercise Price of Options Outstanding	$18.29
Number Exercisable	135
Weighted-Average Exercise Price of Options Exercisable	$17.86

Stockholders_Equity_WeightedAv

Stockholders' Equity - Weighted-Average Assumptions in Determining Stock-Based Compensation Expense (Detail) (Employee Stock Options [Member])	12 Months Ended
	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Employee Stock Options [Member]	'	'	'
Expected Term	'4 years 8 months 12 days	'5 years 4 months 24 days	'5 years 9 months 18 days
Volatility, Minimum	40.10%	42.70%	48.20%
Volatility, Maximum	41.90%	48.50%	49.51%
Risk-free interest rate, Minimum	0.60%	0.60%	0.70%
Risk-free interest rate, Maximum	2.70%	1.30%	2.40%
Dividend yield	0.00%	0.00%	0.00%

Stockholders_Equity_Restricted

Stockholders' Equity - Restricted Stock Unit and Restricted Stock Activity (Detail) (Restricted Stock Units and Restricted Stock [Member], USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013
Restricted Stock Units and Restricted Stock [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Shares Nonvested, Beginning period	806	118
Shares, Granted	2,952	750
Shares, Vested	-251	-8
Shares, Forfeited	-182	-54
Shares Nonvested, Ending period	3,325	806
Weighted average grant date fair value per share, Nonvested Beginning period	$12.05	$12.47
Weighted average grant date fair value per share, Granted	$17.28	$12.08
Weighted average grant date fair value per share, Vested	$11.84	$17.79
Weighted average grant date fair value per share, Forfeited	$13.62	$12.48
Weighted average grant date fair value per share, Nonvested Ending period	$16.63	$12.05

Stockholders_Equity_Summary_of1

Stockholders' Equity - Summary of Total Stock-Based Compensation Cost (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Total stock-based compensation expense	$16,024	$8,519	$3,688
Cost of Revenue [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Total stock-based compensation expense	1,296	649	325
Research and Development [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Total stock-based compensation expense	6,218	2,753	1,474
Selling, General and Administrative [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Total stock-based compensation expense	$8,510	$5,117	$1,889

Stockholders_Equity_Common_Sto

Stockholders' Equity - Common Stock Reserved for Future Issuance (Detail)	Mar. 30, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Shares available for future issuance	21,298	20,684
Warrants to purchase common stock	7,995	94
Total common stock reserved for future issuances	29,693	20,778
2013 Employee Stock Purchase Plan [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Total common stock reserved for future issuances	400	'
Employee Stock Options [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Shares available for future issuance	8,276	10,495
Restricted Stock Units and Restricted Stock [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Shares available for future issuance	3,325	806
Reserved for Future Equity Incentive Grants [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Shares available for future issuance	9,697	9,383

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)

3 Months Ended

12 Months Ended

Mar. 30, 2014

Dec. 29, 2013

Sep. 29, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 30, 2012

Sep. 30, 2012

Jul. 01, 2012

Mar. 30, 2014

Mar. 31, 2013

Apr. 01, 2012

Apr. 03, 2011

Income Taxes Disclosure [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Income tax provision

($1,084,000)

($2,599,000)

$1,945,000

$1,808,000

$278,000

($654,000)

$3,641,000

$2,036,000

$70,000

$5,301,000

$10,205,000

'

Provision made on the excess of the amount for financial reporting over the tax basis of investments in foreign subsidiaries

88,400,000

'

'

'

78,000,000

'

'

'

88,400,000

78,000,000

'

'

Increase in equity due to deferred tax assets realization

'

'

'

'

'

'

'

'

4,839,000

7,077,000

'

'

Valuation allowance increase

'

'

'

'

'

'

'

'

1,300,000

700,000

'

'

Unrecognized tax benefits

10,613,000

'

'

'

7,816,000

'

'

'

10,613,000

7,816,000

3,855,000

1,056,000

Unrecognized tax positions

8,300,000

'

'

'

'

'

'

'

8,300,000

'

'

'

Unrecognized tax benefits offset

2,300,000

'

'

'

'

'

'

'

2,300,000

'

'

'

Unrecognized tax benefits offset by valuation allowance

1,500,000

'

'

'

'

'

'

'

1,500,000

'

'

'

Unrecognized tax benefit offset by change in adjustments to other tax account

800,000

'

'

'

'

'

'

'

800,000

'

'

'

Accrued interest related to uncertain tax matters

200,000

'

'

'

'

'

'

'

200,000

'

'

'

California [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Income Taxes Disclosure [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Operating loss carryforward, expiry period

'

'

'

'

'

'

'

'

'Between 2017 and 2022

'

'

'

State and Local Jurisdiction [Member] | California [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Income Taxes Disclosure [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Net operating loss carryforwards

17,800,000

'

'

'

'

'

'

'

17,800,000

'

'

'

Research tax credit carryforwards

5,600,000

'

'

'

'

'

'

'

5,600,000

'

'

'

Federal [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Income Taxes Disclosure [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Net operating loss carryforwards

5,300,000

'

'

'

'

'

'

'

5,300,000

'

'

'

Deferred tax assets net operating losses carryforward expiration period

'

'

'

'

'

'

'

'

'20 years

'

'

'

Research tax credit carryforwards

$4,000,000

'

'

'

'

'

'

'

$4,000,000

'

'

'

Federal [Member] | Minimum [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Income Taxes Disclosure [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Tax credit carryforward, expiry period

'

'

'

'

'

'

'

'

'2032

'

'

'

Federal [Member] | Maximum [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Income Taxes Disclosure [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Tax credit carryforward, expiry period

'

'

'

'

'

'

'

'

'2034

'

'

'

Income_Taxes_Components_of_Inc

Income Taxes - Components of Income Before Taxes (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 30, 2012	Jul. 01, 2012	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Income Tax Disclosure [Abstract]	'	'	'	'	'	'	'	'	'	'	'
United States	'	'	'	'	'	'	'	'	($3,817)	$11,883	$19,179
International	'	'	'	'	'	'	'	'	10,006	45,123	27,973
Income before income taxes	($6,716)	($14,778)	$15,553	$12,130	$13,850	$16,164	$17,305	$9,687	$6,189	$57,006	$47,152

Income_Taxes_Summary_of_Income

Income Taxes - Summary of Income Tax Expense (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 30, 2012	Jul. 01, 2012	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Current:	'	'	'	'	'	'	'	'	'	'	'
Federal	'	'	'	'	'	'	'	'	$1,658	$5,553	$10,856
State	'	'	'	'	'	'	'	'	1	6	1
International	'	'	'	'	'	'	'	'	179	142	47
Total Current	'	'	'	'	'	'	'	'	1,838	5,701	10,904
Deferred:	'	'	'	'	'	'	'	'	'	'	'
Federal	'	'	'	'	'	'	'	'	-1,856	-375	-777
State	'	'	'	'	'	'	'	'	'	-6	'
International	'	'	'	'	'	'	'	'	88	-19	78
Total Deferred	'	'	'	'	'	'	'	'	-1,768	-400	-699
Income tax provision	($1,084)	($2,599)	$1,945	$1,808	$278	($654)	$3,641	$2,036	$70	$5,301	$10,205

Income_Taxes_Schedule_of_Provi

Income Taxes - Schedule of Provision for Income Taxes Differs from Amount Computed by Applying Statutory Rates (Detail)	12 Months Ended
	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Income Tax Disclosure [Abstract]	'	'	'
Income tax provision at the federal statutory rate	35.00%	35.00%	35.00%
Research and development credits	-27.30%	-2.10%	-1.00%
Foreign tax rate differential	-22.00%	-25.80%	-14.70%
Non deductible stock compensation	19.50%	2.20%	2.30%
Other	-4.10%	'	'
Effective tax rate	1.10%	9.30%	21.60%

Income_Taxes_Summary_of_Compon

Income Taxes - Summary of Components of Deferred Tax Asset (Detail) (USD $)	Mar. 30, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Income Tax Disclosure [Abstract]	'	'
Accrued expenses and reserves	$1,769	$841
Stock based compensation	2,167	1,198
Research and development credits	4,115	1,618
Net operating loss carryforwards	1,001	1,011
Fixed Assets	-44	179
Valuation allowance	-3,761	-2,481
Deferred tax asset	$5,247	$2,366

Income_Taxes_Reconciliation_of

Income Taxes - Reconciliation of Change in Unrecognized Tax Benefits (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Income Tax Disclosure [Abstract]	'	'	'
Beginning Balance	$7,816	$3,855	$1,056
Increases in unrecognized tax benefits	2,797	3,961	2,799
Ending Balance	$10,613	$7,816	$3,855

Acquisition_Additional_Informa

Acquisition - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended	12 Months Ended
	Oct. 31, 2013	Mar. 30, 2014	Mar. 30, 2014
Business Acquisition [Line Items]	'	'	'
Business acquisition, purchase price	$100,000,000	'	'
Business acquisition, contingent future expense reimbursements	2,200,000	'	2,200,000
Business acquisition, contingent cash payment	70,000,000	'	'
Business acquisition, fair value of contingent consideration	0	'	'
Acquisition related costs	'	'	2,100,000
Increase to fixed assets, based on fair market value	'	100,000	'
Decrease in the fair value assigned to goodwill	'	-100,000	'
Fair value of intangible assets	'	37,400,000	37,400,000
Analog Devices, Inc. [Member]	'	'	'
Business Acquisition [Line Items]	'	'	'
Business acquisition, agreement date	'	'	14-Oct-13
Business acquisition, effective date	'	'	31-Oct-13
Developed Technology [Member]	'	'	'
Business Acquisition [Line Items]	'	'	'
Fair value of intangible assets	'	28,520,000	28,520,000
Estimated useful life of intangible assets	'	'	'6 years
Customer Relationships [Member]	'	'	'
Business Acquisition [Line Items]	'	'	'
Fair value of intangible assets	'	$1,560,000	$1,560,000
Estimated useful life of intangible assets	'	'	'7 years

Acquisition_Summary_of_Prelimi

Acquisition - Summary of Preliminary Purchase Price of Assets Acquired and Liabilities Assumed (Detail) (USD $)	Mar. 30, 2014
In Thousands, unless otherwise specified
Assets Acquired	'
Inventories	$5,107
Property and equipment, net	4,339
Intangible assets	37,400
Goodwill	50,952
Total assets acquired	97,808
Total purchase price (net of $2.2 million of contingent expense reimbursements)	97,808
Developed Technology [Member]	'
Assets Acquired	'
Intangible assets	28,520
In-Process Research & Development [Member]	'
Assets Acquired	'
Intangible assets	7,330
Customer Relationships [Member]	'
Assets Acquired	'
Intangible assets	$1,560

Acquisition_Summary_of_Prelimi1

Acquisition - Summary of Preliminary Purchase Price of Assets Acquired and Liabilities Assumed (Parenthetical) (Detail) (USD $)	0 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Mar. 30, 2014
Business Combinations [Abstract]	'	'
Contingent expense reimbursements	$2.20	$2.20

Acquisition_Summary_of_Fair_Va

Acquisition - Summary of Fair Value and Estimated Useful Lives of Intangible Assets (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014
Acquired Finite-Lived Intangible Assets [Line Items]	'
Fair Value Amount	$37,400
Developed Technology [Member]	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
Fair Value Amount	28,520
Estimated Useful Life	'6 years
Customer Relationships [Member]	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
Fair Value Amount	$1,560
Estimated Useful Life	'7 years

Acquisition_Summary_of_Unaudit

Acquisition - Summary of Unaudited Proforma of Combined Financial Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013
Business Combinations [Abstract]	'	'
Revenues	$276,592	$275,414
Net income	$4,051	$46,977

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended	5 Months Ended	12 Months Ended
	Mar. 30, 2014	Mar. 30, 2014	Mar. 30, 2014
Goodwill And Intangible Assets Disclosure [Abstract]	'	'	'
Changes in carrying amount of goodwill	'	$0	'
Decrease in goodwill due to adjustment in preliminary purchase price allocation	-100,000	'	'
Increase to fixed assets, based on fair market value	100,000	'	'
Amortization for acquired intangible assets	'	'	$2,073,000

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets - Summary of Intangible Assets and Accumulated Amortization (Detail) (USD $)	Mar. 30, 2014
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]	'
Intangible assets, Gross	$30,080
Intangible assets, Accumulated Amortization	2,073
Intangible assets, Net	28,007
Developed Technology [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Intangible assets, Gross	28,520
Intangible assets, Accumulated Amortization	1,980
Intangible assets, Net	26,540
Customer Relationships [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Intangible assets, Gross	1,560
Intangible assets, Accumulated Amortization	93
Intangible assets, Net	$1,467

Goodwill_and_Intangible_Assets4

Goodwill and Intangible Assets - Estimated Future Amortization Expense Related to Intangible Assets (Detail) (USD $)	Mar. 30, 2014
In Thousands, unless otherwise specified
Goodwill And Intangible Assets Disclosure [Abstract]	'
2015	$4,976
2016	4,976
2017	4,976
2018	4,976
2019	4,976
Thereafter	3,127
Intangible assets, Net	$28,007

Quarterly_Financial_Data_Unaud2

Quarterly Financial Data (Unaudited) - Summary of Quarterly Financial Data (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 30, 2014	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 30, 2012	Jul. 01, 2012	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Quarterly Financial Information Disclosure [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Net revenue	$58,998	$66,684	$70,941	$55,910	$55,209	$58,929	$55,294	$39,202	$252,533	$208,634	$152,967
Cost of revenue	31,675	35,094	34,364	26,591	27,652	27,723	24,923	17,639	127,724	97,937	67,571
Gross profit	27,323	31,590	36,577	29,319	27,557	31,206	30,371	21,563	124,809	110,697	85,396
Operating expenses:	'	'	'	'	'	'	'	'	'	'	'
Research and development	15,985	14,522	9,810	8,114	6,363	6,712	5,918	5,655	48,431	24,648	19,672
Selling, general and administrative	15,102	15,663	11,424	9,155	7,503	8,428	7,202	6,258	51,344	29,391	18,710
Litigation settlement	500	14,500	'	'	'	'	'	'	15,000	'	'
Total operating expenses	31,587	44,685	21,234	17,269	13,866	15,140	13,120	11,913	114,775	54,039	38,382
Income (loss) from operations	-4,264	-13,095	15,343	12,050	13,691	16,066	17,251	9,650	10,034	56,658	47,014
Interest (expense)	-2,548	-1,464	'	'	'	'	-1	-1	-4,012	-2	-22
Other income (expense), net	96	-219	210	80	159	98	55	38	167	350	160
Other income (expense), net	-2,452	-1,683	210	80	159	98	54	37	-3,845	348	138
Income before income taxes	-6,716	-14,778	15,553	12,130	13,850	16,164	17,305	9,687	6,189	57,006	47,152
Income tax (benefit) provision	-1,084	-2,599	1,945	1,808	278	-654	3,641	2,036	70	5,301	10,205
Net income (loss)	($5,632)	($12,179)	$13,608	$10,322	$13,572	$16,818	$13,664	$7,651	$6,119	$51,705	$36,947
Basic	($0.06)	($0.14)	$0.16	$0.12	$0.16	$0.20	$0.17	$0.09	$0.07	$0.62	$0.39
Diluted	($0.06)	($0.14)	$0.15	$0.12	$0.15	$0.19	$0.16	$0.09	$0.07	$0.59	$0.37
Weighted average shares outstanding in computing net income per share allocable to common stockholders:	'	'	'	'	'	'	'	'	'	'	'
Basic	87,691	87,047	86,289	85,038	84,109	83,218	82,429	81,184	86,520	82,738	41,614
Diluted	87,691	87,047	89,778	87,914	87,741	87,350	87,257	87,080	89,928	87,359	47,011

Quarterly_Financial_Data_Unaud3

Quarterly Financial Data (Unaudited) - Summary of Quarterly Financial Data (Parenthetical) (Detail) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 30, 2012
Quarterly Financial Information Disclosure [Abstract]	'
Income tax expense (benefit) related to prior periods adjustments	($2.20)
Diluted earnings per share	$0.02
Basic earnings per share	$0.03