Integrated Device Technology (IDTI) 10-K 28 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	23-May-14	Sep. 29, 2013
Document Information [Abstract]	'	'	'
Entity Registrant Name	'INTEGRATED DEVICE TECHNOLOGY INC	'	'
Entity Central Index Key	'0000703361	'	'
Current Fiscal Year End Date	'--03-30	'	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Public Float	'	'	$1,059
Entity Common Stock, Shares Outstanding	'	149,293,619	'
Document Fiscal Year Focus	'2014	'	'
Document Fiscal Period Focus	'FY	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	30-Mar-14	'	'

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 30, 2014	Mar. 31, 2013
Current assets:	'	'
Cash and cash equivalents	$91,211,000	$130,837,000
Short-term investments	362,604,000	166,333,000
Accounts receivable, net of allowances of $3,134 and $2,787	68,904,000	62,083,000
Inventories	49,622,000	56,555,000
Income tax receivable	195,000	192,000
Prepayments and other current assets	12,839,000	24,505,000
Total current assets	585,375,000	440,505,000
Property, plant and equipment, net	69,827,000	74,988,000
Goodwill	135,644,000	144,924,000
Acquisition-related intangible assets, net	18,741,000	48,602,000
Deferred non-current tax assets	762,000	671,000
Other assets	20,611,000	18,889,000
Total assets	830,960,000	728,579,000
Current liabilities:	'	'
Accounts payable	25,442,000	23,244,000
Accrued compensation and related expenses	24,343,000	21,090,000
Deferred income on shipments to distributors	14,006,000	14,539,000
Deferred tax liabilities	1,346,000	1,000,000
Other accrued liabilities	11,525,000	14,652,000
Total current liabilities	76,662,000	74,525,000
Deferred tax liabilities	1,494,000	1,552,000
Long-term income tax payable	266,000	454,000
Other long-term liabilities	18,683,000	22,022,000
Total liabilities	97,105,000	98,553,000
Commitments and contingencies (Note 15)	0	0
Stockholders' equity:	'	'
Preferred stock: $.001 par value: 10,000 shares authorized; no shares issued	0	0
Common stock: $.001 par value: 350,000 shares authorized; 149,996 and 146,253 shares outstanding at March 30, 2014 and March 31, 2013, respectively	150,000	146,000
Additional paid-in capital	2,467,341,000	2,407,998,000
Treasury stock at cost: 94,556 shares and 90,426 shares at March 30, 2014 and March 31, 2013, respectively	-1,021,301,000	-977,296,000
Accumulated deficit	-713,944,000	-802,308,000
Accumulated other comprehensive income	1,609,000	1,486,000
Total stockholders' equity	733,855,000	630,026,000
Total liabilities and stockholders' equity	$830,960,000	$728,579,000

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 30, 2014	Mar. 31, 2013
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Allowance for Receivables	$3,134	$2,787
Preferred stock, par value (in dollars per share)	$0.00	$0.00
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$0.00	$0.00
Common stock, shares authorized (in shares)	350,000,000	350,000,000
Common stock, shares outstanding (in shares)	149,996,000	146,253,000
Treasury stock, at cost (in shares)	94,556,000	90,426,000

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (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]	'	'	'
Revenues	$484,779	$484,452	$526,696
Cost of revenues	211,877	214,728	246,190
Gross profit	272,902	269,724	280,506
Operating expenses:	'	'	'
Research and development	140,799	159,471	158,749
Selling, general and administrative	101,148	117,648	100,277
Total operating expenses	241,947	277,119	259,026
Operating income (loss)	30,955	-7,395	21,480
Gain on divestitures, net	78,632	7,986	20,656
Other-than-temporary impairment loss on investments	0	-1,708	-2,797
Interest income (expense) and other, net	2,707	1,708	-1,118
Income before income taxes from continuing operations	112,294	591	38,221
Income tax expense (benefit)	981	-2,120	268
Net income from continuing operations	111,313	2,711	37,953
Discontinued operations:	'	'	'
Gain from divestiture	0	886	45,939
Loss from discontinued operations before income taxes	-22,938	-23,653	-25,521
Income tax expense (benefit)	11	116	-89
Net income (loss) from discontinued operations	-22,949	-22,883	20,507
Net income (loss)	$88,364	($20,172)	$58,460
Basic net income per share - continuing operations (in dollars per share)	$0.74	$0.02	$0.26
Basic net income (loss) per share - discontinued operations (in dollars per share)	($0.15)	($0.16)	$0.15
Basic net income per share (in dollars per share)	$0.59	($0.14)	$0.41
Diluted net income per share - continuing operations (in dollars per share)	$0.73	$0.02	$0.26
Diluted net income (loss) per share - discontinued operations (in dollars per share)	($0.15)	($0.16)	$0.14
Diluted net income per share (in dollars per share)	$0.58	($0.14)	$0.40
Weighted average shares:	'	'	'
Basic (shares)	149,480	144,014	143,958
Diluted (shares)	153,369	145,678	145,848

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]	'	'	'
Net income (loss)	$88,364	($20,172)	$58,460
Other comprehensive income (loss), net of taxes:	'	'	'
Currency translation adjustments, net of tax	-66	235	-383
Change in net unrealized gain (loss) on investments, net of tax	194	-35	-61
Actuarial loss on post-employment and post-retirement benefit plans, net of tax	-5	-77	0
Total other comprehensive income (loss)	123	123	-444
Comprehensive income (loss)	$88,487	($20,049)	$58,016

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 provided by operating activities:	'	'	'
Net income (loss)	$88,364	($20,172)	$58,460
Adjustments:	'	'	'
Depreciation	20,872	20,089	18,818
Amortization of intangible assets	24,793	20,546	16,489
Goodwill and acquisition-related intangible asset impairment	7,230	0	0
Asset impairment	0	584	0
Gain from divestitures	-78,632	-8,872	-66,595
Stock-based compensation expense, net of amounts capitalized in inventory	13,352	13,272	16,795
Other-than-temporary impairment loss on investments	0	1,708	2,797
Deferred tax provision	-8	-3,492	90
Tax benefit from share-based payment arrangements	0	0	-562
Changes in assets and liabilities (net of amounts acquired):	'	'	'
Accounts receivable, net	-6,821	2,483	21,189
Inventories	2,935	15,510	-4,802
Prepayments and other assets	4,348	15,921	-637
Accounts payable	-144	-3,163	-12,154
Accrued compensation and related expenses	1,847	-6,933	-5,767
Deferred income on shipments to distributors	-533	-245	1,410
Income taxes payable and receivable	-888	929	1,439
Other accrued liabilities and long-term liabilities	-1,086	-4,091	-13,193
Net cash provided by operating activities	75,629	44,074	33,777
Cash flows provided by (used for) investing activities:	'	'	'
Acquisitions, net of cash acquired	0	-68,341	-1,957
Cash in escrow related to acquisitions	6,000	-7,816	0
Proceeds from divestitures	96,299	14,237	70,242
Purchases of property, plant and equipment, net	-17,448	-27,854	-22,396
Purchase of intangible assets	0	0	-5,000
Proceeds from sale of non-marketable security	0	0	2,619
Purchases of short-term investments	-463,283	-207,576	-492,672
Proceeds from sales of short-term investments	231,890	59,850	295,908
Proceeds from maturities of short-term investments	34,422	171,709	200,743
Net cash provided by (used for) investing activities	-112,120	-65,791	47,487
Cash flows provided by (used for) financing activities:	'	'	'
Proceeds from issuance of common stock	46,066	17,395	16,288
Repurchase of common stock	-44,005	0	-67,472
Payment of acquisition related contingent consideration	-5,130	0	0
Excess tax benefit from share-based payment arrangements	0	0	562
Net cash provided by (used for) financing activities	-3,069	17,395	-50,622
Effect of exchange rates on cash and cash equivalents	-66	235	-398
Net increase (decrease) in cash and cash equivalents	-39,626	-4,087	30,244
Cash and cash equivalents at beginning of period	130,837	134,924	104,680
Cash and cash equivalents at end of period	91,211	130,837	134,924
Cash paid for:	'	'	'
Interest	22	1,374	1,184
Income taxes, net of refunds	1,848	-84	-197
Non-cash investing and financing activities:	'	'	'
Additions to property, plant and equipment included in accounts payable	$223	$523	$2,489

CONSOLIDATED_STATEMENTS_OF_STO

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)	Total	Common Stock and Additional Paid-In Capital [Member]	Treasury Stock [Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
In Thousands, unless otherwise specified
Opening Balance at Apr. 03, 2011	$595,261	$2,343,874	($909,824)	($840,596)	$1,807
Opening Balance (Shares) at Apr. 03, 2011	'	148,352	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'
Net income (loss)	58,460	'	'	58,460	'
Other comprehensive loss	'	'	'	'	-444
Net current-period other comprehensive income (loss)	-444	'	'	'	'
Issuance of common stock	16,288	16,288	'	'	'
Issuance of common stock (Shares)	'	4,231	'	'	'
Repurchase of common stock	-67,472	'	-67,472	'	'
Repurchase of common stock (in shares)	'	-10,389	'	'	'
Excess tax benefit from stock option	562	562	'	'	'
Stock-based compensation expense	16,733	16,733	'	'	'
Closing Balance at Apr. 01, 2012	619,388	2,377,457	-977,296	-782,136	1,363
Closing Balance (Shares) at Apr. 01, 2012	'	142,194	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'
Net income (loss)	-20,172	'	'	-20,172	'
Other comprehensive loss	'	'	'	'	123
Net current-period other comprehensive income (loss)	123	'	'	'	'
Issuance of common stock	17,395	17,395	'	'	'
Issuance of common stock (Shares)	'	4,059	'	'	'
Stock-based compensation expense	13,292	13,292	'	'	'
Closing Balance at Mar. 31, 2013	630,026	2,408,144	-977,296	-802,308	1,486
Closing Balance (Shares) at Mar. 31, 2013	146,253	146,253	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'
Net income (loss)	88,364	'	'	88,364	'
Other comprehensive loss	'	'	'	'	123
Net current-period other comprehensive income (loss)	123	'	'	'	'
Issuance of common stock	46,066	46,066	'	'	'
Issuance of common stock (Shares)	'	7,873	'	'	'
Repurchase of common stock	-44,005	'	-44,005	'	'
Repurchase of common stock (in shares)	'	-4,130	'	'	'
Stock-based compensation expense	13,281	13,281	'	'	'
Closing Balance at Mar. 30, 2014	$733,855	$2,467,491	($1,021,301)	($713,944)	$1,609
Closing Balance (Shares) at Mar. 30, 2014	149,996	149,996	'	'	'

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Mar. 30, 2014
Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies	'
	Summary of Significant Accounting Policies
	Nature of Business.    Integrated Device Technology, Inc. (IDT or the Company) designs, develops, manufactures and markets a broad range of integrated circuits for the advanced communications, computing and consumer industries.
	Basis of Presentation.    The Company's fiscal year is the 52 or 53 week period ending on the Sunday nearest to March 31. Fiscal 2014 included 52 weeks and ended on March 30, 2014. Fiscal 2013 included 52 weeks and ended on March 31, 2013 and fiscal 2012 included 52 weeks and ended on April 1, 2012.
	Principles of Consolidation.   The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All inter-company accounts and transactions have been eliminated.
	Use of Estimates.   The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.
	Cash and Cash Equivalents.  Cash equivalents are highly liquid investments with remaining maturities of three months or less at the time of purchase.
	Investments
	Available-for-Sale Investments.  Investments designated as available-for-sale include marketable debt and equity securities.  Available-for-sale investments are classified as short-term, as these investments generally consist of highly marketable securities that are intended to be available to meet near-term cash requirements.  Marketable securities classified as available-for-sale are reported at market value, with net unrealized gains or losses recorded in accumulated other comprehensive income (loss), a separate component of stockholders' equity, until realized.  Realized gains and losses on investments are computed based upon specific identification, are included in interest income and other, net and have not been significant for all periods presented.
	Non-Marketable Equity Securities.  Non-marketable equity securities are accounted for at historical cost or, if the Company has significant influence over the investee, using the equity method of accounting.
	Other-Than-Temporary Impairment.  All of the Company’s available-for-sale investments and non-marketable equity securities are subject to a periodic impairment review.  Investments are considered to be impaired when a decline in fair value is judged to be other-than-temporary.  This determination requires significant judgment.  For publicly traded investments, impairment is determined based upon the specific facts and circumstances present at the time, including a review of the closing price over the previous six months, general market conditions and the Company’s intent and ability to hold the investment for a period of time sufficient to allow for recovery.  For non-marketable equity securities, the impairment analysis requires the identification of events or circumstances that would likely have a significant adverse effect on the fair value of the investment, including revenue and earnings trends, overall business prospects and general market conditions in the investees’ industry or geographic area.  Investments identified as having an indicator of impairment are subject to further analysis to determine if the investment is other-than-temporarily impaired, in which case the investment is written down to its impaired value.
	Inventories.   Inventories are recorded at the lower of standard cost (which approximates actual cost on a first-in, first-out basis) or market value.  Inventory held at consignment locations is included in finished goods inventory as the Company retains full title and rights to the product.  Inventory valuation includes provisions for excess and obsolete inventory based on management’s forecasts of demand over specific future time horizons and reserves to value the Company's inventory at the lower of cost or market which rely on forecasts of average selling prices (ASPs) in future periods.
	Property, Plant and Equipment.    Property, plant and equipment are stated at cost. Property, plant and equipment acquired in conjunction with mergers or acquisitions are stated at estimated fair value at the time of acquisition.  For financial reporting purposes, depreciation is computed using the straight-line method over estimated useful lives of the assets.  Estimated useful lives for major asset categories are as follows: machinery and equipment, 3 to 5 years; and buildings and improvements, 10 to 30 years. Leasehold improvements are amortized over the shorter of the estimated useful lives of the assets or the remaining term of the lease.
	Long-Lived Assets and Goodwill.   The carrying values of long-lived assets, including purchased intangibles are evaluated whenever events or circumstances indicate that the carrying values may not be recoverable. If estimated undiscounted cash flows are not sufficient to recover the carrying values, the affected assets are considered impaired and are written down to their estimated fair value, which is generally determined on the basis of discounted cash flows or outside appraisals.
	The Company tests for impairment of goodwill and other indefinite-lived assets on an annual basis, or more frequently if indicators of impairment are present.  These tests are performed at the reporting unit level using a two-step, fair-value based approach. The first step, used to determine if impairment possibly exists, is to compare the carrying amount of a reporting unit, including goodwill, to its fair value. If the carrying amount of the reporting unit exceeds the fair value, the second step is to measure the amount of impairment loss by comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill.
	Income Taxes.  The Company accounts for income taxes under an asset and liability approach that requires the expected future tax consequences of temporary differences between book and tax bases of assets and liabilities be recognized as deferred tax assets and liabilities. Generally accepted accounting principles require the Company to evaluate its ability to realize the value of its net deferred tax assets on an ongoing basis. A valuation allowance is recorded to reduce the net deferred tax assets to an amount that will more likely than not be realized. Accordingly, the Company considers various tax planning strategies, forecasts of future taxable income and its most recent operating results in assessing the need for a valuation allowance. In the consideration of the ability to realize the value of net deferred tax assets, recent results must be given substantially more weight than any projections of future profitability. Since the fourth quarter of fiscal 2003, the Company determined that, under applicable accounting principles, it could not conclude that it was more likely than not that the Company would realize the value of its net deferred tax assets. The Company’s assumptions regarding the ultimate realization of these assets remained unchanged in fiscal 2014 and accordingly, the Company continues to record a valuation allowance to reduce its deferred tax assets to the amount that is more likely than not to be realized.
	The Company recognizes the tax liability for uncertain income tax positions on the income tax return based on the two-step process. The first step is to determine whether it is more likely than not that each income tax position would be sustained upon audit. The second step is to estimate and measure the tax benefit as the amount that has a greater than 50% likelihood of being realized upon ultimate settlement with the tax authority. Estimating these amounts requires the Company to determine the probability of various possible outcomes. The Company evaluates these uncertain tax positions on a quarterly basis. This evaluation is based on the consideration of several factors including changes in facts or circumstances, changes in applicable tax law, settlement of issues under audit, and new exposures. If the Company later determines that the exposure is lower or that the liability is not sufficient to cover its revised expectations, the Company adjusts the liability and effect a related change in its tax provision during the period in which the Company makes such determination.
	Revenue Recognition.  The Company’s revenue results from semiconductor products sold through three channels: direct sales to original equipment manufacturers (OEMs) and electronic manufacturing service providers (EMSs), consignment sales to OEMs and EMSs, and sales through distributors.   The Company recognizes revenue when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the price is fixed or determinable, and its ability to collect is reasonably assured.
	Distributors who serve our customers worldwide and distributors who serve our customers in the U.S. and Europe regions, who have stock rotation, price protection and ship from stock pricing adjustment rights, the Company defers revenue and related cost of revenues on sales to these distributors until the product is sold through by the distributor to an end-customer.  Subsequent to shipment to the distributor, the Company may reduce product pricing through price protection based on market conditions, competitive considerations and other factors.  Price protection is granted to distributors on the inventory that they have on hand at the date the price protection is offered.  The Company also grants certain credits to its distributors on specifically identified portions of the distributors’ business to allow them to earn a competitive gross margin on the sale of the Company’s products to their end customers.  As a result of its inability to estimate these credits, the Company has determined that the sales price to these distributors is not fixed or determinable until the final sale to the end-customer.
	In the Asia Pacific region excluding Japan (APAC), the Company has distributors for which revenue is recognized upon shipment, with reserves recorded for the estimated return and pricing adjustment exposures.   The determination of the amount of reserves to be recorded for stock rotation rights requires the Company to make estimates as to the amount of product which will be returned by customers within their limited contractual rights.  The Company utilizes historical return rates to estimate the exposure. In addition, on occasion, the Company can offer pricing adjustments to distributors for product purchased in a given quarter that remains in their inventory.  These amounts are estimated by management based on discussions with customers, assessment of market trends, as well as historical practice.
	Shipping and Handling Costs.  The Company includes shipping and handling costs billed to customers in revenues.  The Company’s shipping and handling costs are included in cost of revenues.
	Stock-based Compensation. The fair value of employee restricted stock units is equal to the market value of the Company’s common stock on the date the award is granted.  For performance-based restricted stock units, the Company is required to assess the probability of achieving certain financial objectives at the end of each reporting period. Based on the assessment of this probability, which requires subjective judgment, the Company records stock-based compensation expense before the performance criteria are actually fully achieved, which may then be reversed in future periods if the Company determines that it is no longer probable that the objectives will be achieved. The expected cost of each award is reflected over the performance period and is reduced for estimated forfeitures.
	The Company estimates the fair value of employee stock options and the right to purchase shares under the employee stock purchase plan using the Black-Scholes valuation model, consistent with the FASB’s authoritative guidance for share-based payments.  Option-pricing models require the input of highly subjective assumptions, including the expected term of options and the expected price volatility of the stock underlying such options.  In addition, the Company is required to estimate the number of stock-based awards that will be forfeited due to employee turnover and true up these forfeiture rates when actual results are different from the Company's estimates.  The Company attributes the value of stock-based compensation to expense on an accelerated method.  Finally, the Company capitalizes into inventory a portion of the periodic stock-based compensation expense that relates to employees working in manufacturing activities.
	The Company updates the expected term of stock option grants annually based on its analysis of the stock option exercise behavior over a period of time.  The interest rate used in the Black-Scholes valuation model to value the stock option is based on the average U.S. Treasury interest rate over the expected term during the applicable quarter.  The Company believes that the implied volatility of its common stock is an important consideration of overall market conditions and a good indicator of the expected volatility of its common stock.  However, due to the limited volume of options freely traded over the counter, the Company believes that implied volatility, by itself, is not representative of the expected volatility of its common stock.  Therefore, the Company's volatility factor used to estimate the fair value of its stock-based awards reflects a blend of historical volatility of its common stock and implied volatility of call options and dealer quotes on call options, generally having a term of less than twelve months.  The Company has not paid, nor does it have current plans to pay dividends on its common stock in the foreseeable future.
	Comprehensive Income (Loss).    Comprehensive income (loss) is comprised of net income and unrealized gains and losses on available-for-sale securities and foreign exchange contracts and changes in pension liabilities. Accumulated other comprehensive income (loss), as presented on the accompanying balance sheets, consists of net unrealized gains and losses on available-for-sale securities and foreign currency translation adjustments, and changes in pension liabilities, net of tax.
	Pensions and Other Post-retirement Plans.    The Company, through its actuaries, utilizes assumptions when estimating the liabilities for pension and other employee benefit plans. These assumptions, where applicable, include the discount rates used to determine the actuarial present value of projected benefit obligations, the rate of increase in future compensation levels, the long-term rate of return on assets and the growth in health care costs. The cost of these benefits is recognized in the Consolidated Financial Statements over an employee’s term of service with the Company, and the accrued benefits are reported as other long-term liabilities on the Consolidated Balance Sheets.
	Translation of Foreign Currencies.    For subsidiaries in which the functional currency is the local currency, gains and losses resulting from translation of foreign currency financial statements into U.S. dollars are recorded as a component of accumulated other comprehensive income. For subsidiaries where the functional currency is the U.S. dollar, gains and losses resulting from the process of remeasuring foreign currency financial statements into U.S. dollars are included in interest income and other, net and have not been significant for all periods presented.
	Certain Risk and Concentrations.    The Company's most significant potential exposure to credit concentration risk includes debt-security investments, foreign exchange contracts and trade accounts receivable.  The Company’s investment policy addresses sector and industry concentrations, credit ratings and maturity dates.  The Company invests its excess cash primarily in highly-rated money market and short-term debt instruments, diversifies its investments and, by policy, invests only in highly-rated securities to minimize credit risk.
	The Company sells integrated circuits to OEMs, distributors and EMSs primarily in the U.S., Europe, Japan and APAC. The Company monitors the financial condition of its major customers, including performing credit evaluations of those accounts which management considers to be high risk, and generally does not require collateral from its customers.   When deemed necessary, the Company may limit the credit extended to certain customers.   The Company’s relationship with the customer, and the customer’s past and current payment experience, are also factored into the evaluation in instances in which limited financial information is available. The Company maintains an allowance for doubtful accounts for probable credit losses, including reserves based upon a percentage of total receivables.  When the Company becomes aware that a specific customer may default on its financial obligation, a specific amount, which takes into account the level of risk and the customer’s outstanding accounts receivable balance, is reserved.  These reserved amounts are classified within selling, general and administrative expenses.  Write-offs of accounts receivable balances were not significant in each of the three fiscal years presented.
	Sales through a distributor, Avnet, represented approximately 12%, 10% and 11% of the Company’s revenues in fiscal 2014, 2013 and 2012, respectively. Sales through another distributor, Maxtek and its affiliates, represented approximately 13% and 15% of the Company’s revenues in fiscal 2013 and 2012, respectively, and sales through another distributor, Uniquest, represented approximately 10%, of the Company's revenues in both fiscal 2013 and 2012. As of March 30, 2014, two distributors represented 15%, and 14%, of the Company’s gross accounts receivable. At March 31, 2013, four distributors represented 15%, 15%, 12% and 11% of the Company’s gross accounts receivable.
	For foreign exchange contracts, the Company manages its potential credit exposure primarily by restricting transactions with only high-credit quality counterparties.
	The semiconductor industry is characterized by rapid technological change, competitive pricing pressures, and cyclical market patterns. The Company's results of operations are affected by a wide variety of factors, including general economic conditions, both at home and abroad; economic conditions specific to the semiconductor industry; demand for the Company's products; the timely introduction of new products; implementation of new manufacturing technologies; manufacturing capacity; the availability and cost of materials and supplies; competition; the ability to safeguard patents and intellectual property in a rapidly evolving market; and reliance on assembly and manufacturing foundries, independent distributors and sales representatives. As a result, the Company may experience substantial period-to-period fluctuations in future operating results due to the factors mentioned above or other factors.
	Product Warranty.    The Company maintains a reserve for obligations it incurs under its product warranty program. The standard warranty period offered is one year, though in certain instances the warranty period may be extended to as long as two years.  Management estimates the fair value of its warranty liability based on actual past warranty claims experience, its policies regarding customer warranty returns and other estimates about the timing and disposition of product returned under the program.
	Recent Accounting Pronouncements.
	Accounting Pronouncements Recently Adopted
	In July 2012, the Financial Accounting Standards Board (“FASB”) issued an amendment to its guidance regarding the testing of indefinite-lived intangible assets for impairment. This amended guidance allows an entity first to assess qualitative factors to determine whether it is more likely than not that an indefinite-lived intangible asset is impaired as a basis for determining whether it is necessary to perform the quantitative impairment test in accordance with the guidance on the impairment of intangible assets other than goodwill. This amended guidance is effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012. The adoption of this guidance had no impact on the Company’s consolidated financial statements.
	Accounting Pronouncements Not Yet Effective for Fiscal 2014
	In February 2013, the FASB issued guidance for the recognition, measurement and disclosure of certain obligations resulting from joint and several liability arrangements for which the total amount is fixed. Such obligations may include debt arrangements, legal settlements and other contractual arrangements. The guidance is effective for fiscal years and interim periods within those fiscal years beginning after December 15, 2013, which is the first quarter of fiscal 2015 for the Company, and should be applied retrospectively to all prior periods presented for those obligations within the scope which existed as of the beginning of the fiscal year of adoption. Early adoption is permitted. The Company is currently evaluating the new guidance.
	In March 2013, the FASB issued guidance on the accounting for the cumulative translation adjustment upon derecognition of certain subsidiaries or groups of assets within a foreign entity or of an investment in a foreign entity. The guidance is effective prospectively for fiscal years and interim periods within those fiscal years beginning after December 15, 2013, which is the first quarter of fiscal 2015 for the Company. Early adoption is permitted. The Company is currently evaluating the new guidance.
	In July 2013, the FASB issued new accounting guidance on the presentation of unrecognized tax benefits. The new guidance requires an entity to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward, except as follows: to the extent a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date under the tax law of the applicable jurisdiction to settle any additional income taxes that would result from the disallowance of a tax position or the tax law of the applicable jurisdiction does not require the entity to use, and the entity does not intend to use the deferred tax  asset for such purpose, then the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. This guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2013, with early adoption permitted. The Company has historically accounted for its unrecognized tax benefits in accordance with this guidance and as such, adoption of this guidance has no impact on its financial position, cash flows or results of operations.

Net_Income_Loss_Per_Share

Net Income (Loss) Per Share	12 Months Ended
	Mar. 30, 2014
Earnings Per Share [Abstract]	'
Net Income Per Share From Continuing Operations	'
	Net Income Per Share From Continuing Operations
	Basic net income per share is computed using the weighted-average number of common shares outstanding during the period.  Diluted net income per share is computed using the weighted-average number of common and dilutive potential common shares outstanding during the period. Potential common shares include employee stock options and restricted stock units. For purposes of computing diluted net income per share, weighted-average potential common shares do not include potential common shares that are anti-dilutive under the treasury stock method.
	The following table sets forth the computation of basic and diluted net income per share:
		Fiscal Year Ended
		March 30,		March 31,		April 1,
	(in thousands, except per share amounts)	2014		2013		2012
	Numerator (basic and diluted):
	Net income from continuing operations	$	111,313	$	2,711	$	37,953
	Denominator:
	Weighted average common shares outstanding, basic	149,480		144,014		143,958
	Dilutive effect of employee stock options and restricted stock units	3,889		1,664		1,890
	Weighted average common shares outstanding, diluted	153,369		145,678		145,848
	Basic net income per share from continuing operations	$	0.74	$	0.02	$	0.26
	Diluted net income per share from continuing operations	$	0.73	$	0.02	$	0.26
	Potential dilutive common shares of 1.5 million, 12.0 million and 11.1 million pertaining to employee stock options, restricted stock and performance stock units were excluded from the calculation of diluted earnings per share for the fiscal years ended March 30, 2014, March 31, 2013 and April 1, 2012, respectively, because the effect would have been anti-dilutive.

Business_Combinations

Business Combinations	12 Months Ended
	Mar. 30, 2014
Business Combinations [Abstract]	'
Business Combinations	'
	Business Combinations
	Termination of Proposed Acquisition of PLX Technology, Inc. (PLX)
	On April 30, 2012, IDT and PLX had entered into an Agreement and Plan of Merger with PLX Technology, Inc. (PLX) for the acquisition of PLX by IDT (the Agreement). On December 19, 2012, the United States Federal Trade Commission (FTC) filed an administrative complaint challenging IDT’s proposed acquisition of PLX. In response to the FTC’s determination to challenge the proposed acquisition of PLX by IDT, effective December 19, 2012, IDT and PLX mutually agreed to terminate the Agreement. Also on December 19, 2012, IDT withdrew its related exchange offer (the Offer) to acquire all of the issued and outstanding shares of common stock, $0.001 par value, of PLX and instructed Computershare, the exchange agent for the Offer, to promptly return all previously tendered shares.
	Associated with the proposed acquisition of PLX, during the fiscal year ended March 31, 2013, the Company incurred approximately $10.7 million in acquisition related costs which were included in selling, general and administrative expense on the Consolidated Statements of Operations.
	Acquisition of NXP B.V.'s Data Converter Business
	On July 19, 2012, the Company completed an acquisition of certain assets related to technology and products developed for communications analog mixed-signal market applications from NXP B.V. for an aggregate cash purchase price of approximately $31.2 million, less a $4.0 million credit from NXP B.V. for certain accrued liabilities assumed by the Company from NXP B.V. resulting in a net aggregate purchase price of $27.2 million. The Company incurred approximately $3.9 million in acquisition related costs, which were included in loss from discontinued operations on the Consolidated Statements of Operations for the fiscal year ended March 31, 2013.
	The assets acquired and liabilities assumed were recognized in the following manner based on their fair values as of July 19, 2012:
	(in thousands)	Fair Value
	Inventories	$	252
	Property, plant and equipment, net	1,125
	Funded pension assets *	666
	Accrued pension liabilities*	(666		)
	Other long-term liabilities	(435		)
	Intangible assets (other than goodwill)	12,500
	Goodwill	13,720
	Total purchase price	$	27,162
	* See Note 16 for information regarding pension plans adopted.
	A summary of the allocation of intangible assets (other than goodwill) is as follows:
	(in thousands)	Fair Value
	Existing technologies	$	7,500
	Customer relationships	2,700
	In-process research and development	1,900
	Non-compete agreements	300
	Backlog	100
	Total	$	12,500
	Goodwill:
	The purchase price in excess of the fair value of the assets and liabilities assumed was recognized as goodwill.
	Identifiable Tangible Assets and Liabilities:
	Assets and liabilities were reviewed and adjusted, if required, to their estimated fair value.
	Inventories – The value allocated to inventories reflects the estimated fair value of the acquired inventory based on the expected sales price of the inventory, less reasonable selling margin.
	Funded pension assets and liabilities – The costs of pension benefits and related liabilities for the employees that were transferred to the Company as a result of the acquisition were determined based on actuarial calculations.
	Intangible Assets:
	Existing technologies consist of NXP's data converter products that have reached technological feasibility and in-process research and development (IPR&D) which consists of projects that have not reached technological feasibility. The Company valued the existing technologies and IPR&D utilizing a multi-period excess earnings method (Excess Earnings Method), which uses the discounted future earnings specifically attributed to these intangible assets, that is, in excess of returns for other assets that contributed to those earnings. The Company utilized discount factors of 26% for the existing technologies. A discount factor of 31% was utilized for IPR&D. The Company valued the backlog using the Excess Earnings Method and a discount rate of 19%.
	Customer relationship and non-competition agreement values have been estimated utilizing a with and without method (With and Without Method), which uses projected cash flows with and without the intangible asset in place. Cash flow differentials are then discounted to present value to arrive at an estimate of fair value for the asset. The Company utilized discount factors of 29% for estimating the value of these intangible assets.
	Discontinued operation:
	The financial results of the acquired NXP's data converter products have been included in the Company's HSC business since the closing of the acquisition. In the third quarter of fiscal 2014, the Company initiated a plan to divest its HSC business. The HSC business was included in the Company’s Communications reportable segment. For financial statements purposes, the results of operations for the HSC business have been segregated from those of the continuing operations and are presented in the Company's consolidated financial statements as discontinued operations (see Note 4).
	Acquisition of Fox Enterprises, Inc.
	On April 30, 2012, the Company completed the acquisition of Fox Enterprises, Inc. (Fox), a leading supplier of frequency control products including crystals and crystal oscillators, in an all-cash transaction for approximately $28.9 million, which included $25.7 million in cash paid at closing and $3.2 million which was recorded as a liability representing the fair value of contingent cash consideration of up to $4.0 million based upon the achievement of future financial milestones, which would be payable after 1 year from the acquisition date. In June 2013, the Company settled the contingent consideration and paid Fox $3.3 million.
	The Company allocated the purchase price to the tangible and intangible assets acquired and liabilities assumed based on their estimated fair values. The excess purchase price over those fair values was recorded as goodwill. The fair values assigned to tangible and intangible assets acquired were based on management estimates and assumptions.
	The Company incurred approximately $0.2 million of acquisition-related costs in fiscal 2013 and these costs were included in selling, general and administrative expenses in the Consolidated Statements of Operations.
	The aggregate purchase price was allocated as follows:
	(in thousands)	Fair Value
	Cash	$	1,080
	Accounts receivable	4,053
	Inventories	2,600
	Prepaid expenses and other current assets	363
	Property, plant and equipment, net	656
	Other long-term assets	1,190
	Accounts payable and accrued expenses	(3,765		)
	Other long-term liabilities	(1,516		)
	Long-term deferred tax liability	(4,549		)
	Intangible assets (other than goodwill)	12,300
	Goodwill	16,509
	Total purchase price	$	28,921
	A summary of the allocation of intangible assets (other than goodwill) is as follows:
	(in thousands)	Fair Value
	Existing technologies	$	7,900
	Customer relationships	2,000
	Trade names and trademarks	1,500
	In-process research and development	900
	Total	$	12,300
	Identifiable Tangible Assets and Liabilities:
	Assets and liabilities were reviewed and adjusted, if required, to their estimated fair value.
Inventories – The value allocated to inventories reflects the estimated fair value of the acquired inventory based on the expected sales price of the inventory, less reasonable selling margin.
Intangible Assets:
The Company valued the existing technologies utilizing a discounted cash flow (DCF) model, which uses forecasts of future revenues and expenses related to the intangible assets. The Company utilized discount factors of 15% for the existing technologies and is amortizing the intangible assets over 5 years on a straight-line basis.
Customer relationship values have been estimated utilizing a DCF model, which uses forecasts of future revenues and expenses related to the intangible asset. The Company utilized discount factors of 15% - 20% for this intangible asset and is amortizing this intangible asset over 4 years on a straight-line basis.
Trade names and trademarks values have been estimated utilizing a DCF model, which uses forecasts of future revenues and expenses related to the intangible asset. The Company utilized a discount factor of 20% for this intangible asset and is amortizing this intangible asset over 3 years on a straight-line basis.
In-process research and development (IPR&D):
The Company utilized the DCF method to value the IPR&D using a discount factor of 21%. This IPR&D was completed and began amortization in fiscal 2013.
The financial results of Fox have been included in the Company’s Consolidated Statements of Operations from April 30, 2012, the closing date of the acquisition. Pro forma earnings information has not been presented because the effect of the acquisition is not material to the Company’s historical financial statements.
Acquisition of Alvand Technologies, Inc.
On April 16, 2012, the Company completed the acquisition of Alvand Technologies Inc., a leading analog integrated circuits company specializing in data converters, for total purchase consideration of approximately $23.3 million, of which $20.5 million was paid in cash at closing and $2.8 million was recorded as a liability representing the fair value of contingent cash consideration of up to $4.0 million based upon the achievement of future product development milestones to be completed within 3 years following the acquisition date. Payments will be made on a proportionate basis upon the completion of each milestone. As of March 31, 2013, the fair value of the contingent consideration was re-measured based on a revised product development forecast for the business and increased $0.5 million to $3.3 million. As of March 30, 2014, the fair value of the contingent consideration was again re-measured based on a revised product development forecast for the business and increased $0.6 million . The change in the fair value of the contingent consideration was recorded in selling, general and administrative expense. During the fiscal year 2014 the Company paid $1.8 million in contingent consideration and the remaining estimated fair value of the unpaid contingent consideration for Alvand Technologies as of March 30, 2014 was $2.1 million.
The Company allocated the purchase price to the tangible and intangible assets acquired and liabilities assumed based on their estimated fair values. The excess purchase price over those fair values was recorded as goodwill. The fair values assigned to tangible and intangible assets acquired were based on management estimates and assumptions.
The Company incurred approximately $0.1 million of acquisition-related costs in fiscal 2013, which are included loss from discontinued operations in the Consolidated Statements of Operations.
The aggregate purchase price was allocated as follows:
(in thousands)	Fair Value
Cash	$	147
Accounts receivable	211
Prepaid expenses	124
Property, plant and equipment, net	15
Accounts payable and other current liabilities	(707		)
Backlog	1,500
Non-competition agreements	2,300
Goodwill	19,712
Total purchase price	$	23,302
Intangible Assets:
Backlog consists of existing contracts. The Company valued the one-year of contractual backlog by calculating the present value of the projected cash flows that are expected to be generated by the backlog utilizing a discount factor of 15%. The Company amortized this intangible asset over 1 year on a straight-line basis.
The Company valued non-competition agreements estimating cash flows with and without non-competition agreements. The projected cash flows were discounted using a discount factor of 22%.
Discontinued operation:
The financial results of Alvand Technologies have been included in the Company’s HSC business since the closing of the acquisition. In the third quarter of fiscal 2014, the Company initiated a plan to divest its HSC business. The HSC business was included in the Company’s Communications reportable segment. For financial statements purposes, the results of operations for the HSC business have been segregated from those of the continuing operations and are presented in the Company's consolidated financial statements as discontinued operations (see Note 4).

Discontinued_Operations

Discontinued Operations	12 Months Ended
	Mar. 30, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
Discontinued Operations	'
	Discontinued Operations
	High-Speed Converter (“HSC”) Business
	In the third quarter of fiscal 2014, the Company initiated a project to divest its HSC business. The Company believes that this divestiture will allow it to strengthen its focus on its analog-intensive mixed-signal, timing and synchronization, and interface and connectivity solutions. The Company envisions fully divesting its HSC business within the twelve months from the initiation date of the plan and has classified these assets as held for sale and accordingly these assets are no longer being depreciated or amortized. At March 30, 2014, the HSC business long-lived assets classified as held for sale were $9.5 million and consisted of $2.9 million in fixed assets and $6.6 million in intangible assets. The fair value of the HSC business was based on the estimated sales price less estimated disposal costs.
	The HSC business was included in the Company’s Communications reportable segment. For financial statements purposes, the results of operations for the HSC business have been segregated from those of the continuing operations and are presented in the Company's consolidated financial statements as discontinued operations.
	The results of the HSC business discontinued operations for the fiscal years 2014, 2013 and 2012 were as follows (in thousands):
		For the Twelve Months Ended,
		March 30, 2014				March 31, 2013				April 1, 2012
	Revenues	$	3,466			$	2,784			$	—
	Cost of revenue	2,935				2,908				—
	Goodwill and long-lived assets impairment	4,797				—				—
	Operating expenses	18,622				18,398				630
	Other income (expenses)	(50		)		—				—
	Income tax expense	11				113				—
	Net loss from discontinued operations	$	(22,949	)		$	(18,635	)		$	(630	)
	Video Business
	On September 26, 2011, the Company completed the transfer of certain assets related to IDT’s Hollywood Quality Video (HQV) and Frame Rate Conversion (FRC) video processing product lines to Qualcomm pursuant to an Asset Purchase Agreement. The sale of these HQV and FRC video processing assets was intended to allow the Company to intensify focus on its analog-intensive mixed-signal, timing, and interface and solutions. Upon the closing of the transaction, Qualcomm paid the Company $58.7 million in cash consideration, of which $6.0 million was held in an escrow account for a period of two years and during fiscal 2014 this amount was received in full. The Company’s HQV and FRC product lines represented a significant portion of the Company’s video business assets. In the second quarter of fiscal 2012, the Company recorded a gain of $45.9 million related to this divestiture. The following table summarizes the components of the gain (in thousands):
		Amount
	Cash proceeds from sale (including amounts held in escrow)	$	58,744
	Less book value of assets sold and direct costs related to the sale:
	Fixed assets	(434		)
	Goodwill	(8,568		)
	Intangible assets	(1,818		)
	License	(525		)
	Transaction and other costs	(1,460		)
	Gain on divestiture	$	45,939
	On August 1, 2012, the Company completed the transfer of the remaining assets of its video business to Synaptics for $5.0 million in cash pursuant to an Asset Purchase Agreement. In connection with the divestiture, 47 employees were transferred to Synaptics. In the second quarter of fiscal 2013, the Company recorded a gain of $0.9 million related to this divestiture. The following table summarizes the components of the gain (in thousands):
		Amount
	Cash proceeds from sale	$	5,000
	Less book value of assets sold and direct costs related to the sale:
	Fixed assets	(1,963		)
	Goodwill	(700		)
	Inventories	(1,288		)
	Transaction and other costs	(163		)
	Gain on divestiture	$	886
	Prior to second quarter of fiscal 2012, the video business was part of the Company’s Computing and Consumer reportable segment. For financial statement purposes, the results of operations for the video business are presented in the Company's consolidated financial statements as discontinued operations.
	The results of discontinued operations for the fiscal years 2013 and 2012 are as follows (in thousands):
				For the Fiscal Year Ended
				March 31, 2013				April 1, 2012
	Revenues			$	2,429			$	9,620
	Cost of revenue			3,006				11,271
	Operating expenses			4,554				23,240
	Gain on divestiture			886				45,939
	Income tax expense (benefit)			3				(89		)
	Net income (loss) from discontinued operations			$	(4,248	)		$	21,137

Other_Divestitures_not_account

Other Divestitures (not accounted as discontinued operations)	12 Months Ended
	Mar. 30, 2014
Divestitures [Abstract]	'
Other Divestitures (not accounted for as discontinued operations)	'
	Other Divestitures (not accounted for as discontinued operations)
	Sale of Certain Assets of Audio Business
	On December 13, 2013, Integrated Device Technology, Inc. and Integrated Device Technology (Malaysia) Sdn. Bhd., a wholly-owned subsidiary of IDT (collectively “IDT”), completed the sale of certain assets of its Audio business to Stravelis, Inc. for $0.2 million in cash and up to a maximum of $1.0 million additional consideration contingent upon future revenues. The Company estimates the fair value of the contingent consideration to be zero based on the estimated probability of attainment of future revenue targets. In addition, the Company recorded a $0.3 million liability for services to be provided at no charge by IDT for the first year following the acquisition date. The Company recorded a loss of $3.7 million on divestiture related to this transaction in the third quarter of fiscal 2014.
	The following table summarizes the components of the loss on divestiture (in thousands):
			Amount
	Cash proceeds from sale		$	200
	Maximum contingent consideration		1,000
	Total consideration		$	1,200
	Fair value adjustment to contingent consideration		$	(1,000	)
	Fair value adjustment to transitional services agreement		(300		)
	Fixed assets		(135		)
	Inventories		(3,051		)
	Other assets		(304		)
	Transaction and other costs		(126		)
	Loss on divestiture		$	(3,716	)
	Prior to the divestiture, this business was part of a larger cash-flow generating product group and did not, on its own, represent a separate operation of the Company and, therefore, this sale did not qualify as discontinued operations.
	Sale of Certain Assets of PCI Express ("PCIe") Enterprise Flash Controller Business
	On July 12, 2013, Integrated Device Technology, Inc. and Integrated Device Technology (Malaysia) Sdn. Bhd., a wholly-owned subsidiary of IDT (collectively “IDT”), completed the sale of certain assets of its PCI Express ("PCIe") enterprise flash controller business to PMC-Sierra, Inc.(“PMC”), for $96.1 million in cash.
	The Company recorded a gain of $82.3 million on divestiture related to this transaction in the second quarter of fiscal 2014.
	The following table summarizes the components of the gain on divestiture (in thousands):
			Amount
	Cash proceeds from sale		$	96,099
	Less book value of assets sold and direct costs related to the sale:
	Fixed assets		(1,312		)
	Inventories		(876		)
	Goodwill allocation		(7,323		)
	Transaction and other costs		(4,239		)
	Gain on divestiture		$	82,349
	Pursuant to the terms of the Asset Purchase Agreement (the "Purchase Agreement") by and among IDT and PMC, dated May 29, 2013, IDT sold (i) substantially all of the assets that were used by IDT and its subsidiaries in the business of designing, developing, manufacturing, testing, marketing, supporting, maintaining, distributing, provisioning and selling non-volatile memory (flash) controllers and (ii) all technology and intellectual property rights owned by IDT or any of its subsidiaries and used exclusively in, or developed exclusively for use in, (a) switching circuits having the primary function of flexible routing of data from/to multiple switch interface ports, where all switch interface ports conform to the PCIe protocol, or (b) circuits having the primary function of executing all of the capturing, re-timing, re-generating and re-transmitting PCIe signals to help extend the physical reach of the signals in a system (the “Disposition”).
	In connection with the closing of the Disposition, a license agreement was entered into by IDT and a subsidiary of PMC simultaneously with the Purchase Agreement, whereby IDT will license certain intellectual property rights and technology to PMC, and PMC will license back to IDT certain of the intellectual property rights and technology acquired by PMC in the Disposition.
	In connection with the closing of the Disposition, IDT and PMC also entered into (a) a transition services agreement and (b) a five year supply agreement, whereby IDT will supply wafers for certain products to PMC.
	Prior to the divestiture, the operating results for IDTs PCIe flash controller business were included in the Company's Computing and Consumer reportable segment. The PCIe enterprise flash controller business was part of a larger cash-flow generating product group and did not, on its own, represent a separate operation of the Company and, therefore, this sale did not qualify as discontinued operations for reporting purposes.
	Sale of Smart Meter Business
	On March 7, 2013, the Company completed the sale of its smart metering business and related assets to Atmel Corporation for $10.3 million in cash, of which $1.0 million was held in an escrow account for a period of one year and was received in full in fiscal 2014. In the fourth quarter of fiscal 2013, the Company recorded a gain of $8.0 million related to this divestiture. Prior to the divestiture, the smart meter business was part of a larger cash-flow generating product group and did not, on its own, represent a separate operation of the Company and, therefore, this sale did not qualify as discontinued operations. The following table summarizes the components of the gain on divestiture (in thousands):
		Amount
	Cash proceeds from sale	$	10,264
	Less book value of assets sold and direct costs related to the sale:
	Fixed assets	(22		)
	Inventories	(1,299		)
	Transaction and other costs	(957		)
	Gain on divestiture	$	7,986
	Wafer fabrication facility
	On January 31, 2012, the Company completed the sale of a wafer fabrication facility located in Hillsboro, Oregon and related assets and specific liabilities to Jireh Semiconductor Incorporated, an Oregon corporation and wholly-owned subsidiary of Alpha and Omega Semiconductor Limited (AOS) for $26.3 million in cash, of which $5.0 million was received as a purchase option deposit in fiscal 2011. The following table summarizes the components of the gain on divestiture (in thousands):
		Amount
	Cash proceeds from sale	$	26,330
	Assets sold:
	Fixed assets, net	(3,131		)
	Other assets	(1,362		)
	Liabilities transferred	476
	Transaction and other costs	(1,657		)
	Gain on divestiture	$	20,656

Fair_Value_Measurement

Fair Value Measurement	12 Months Ended
	Mar. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurement	'
	Fair Value Measurement
	Fair value measurement is the price that would be received from selling an asset or paid to transfer a liability 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 assets or liabilities.  When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, the Company considers the principal or most advantageous market in which it would transact.
	Fair Value Hierarchy
	The three levels of inputs that may be used to measure fair value are as follows:
	Level 1: Quoted market prices for identical assets or liabilities in active markets at the measure date.
	Level 2: Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data.
	Level 3: Inputs reflect management’s best estimate of what market participants would use in pricing the asset or liability at the measurement date.  The inputs are unobservable in the market and significant to the instrument’s valuation.
	The following table summarizes the Company’s financial assets and liabilities measured at fair value on a recurring basis as of March 30, 2014:
		Fair Value at Reporting Date Using
	(in thousands)	Quoted Prices in			Significant Other		Significant Unobservable Inputs		Total Balance
		Active Markets for			Observable Inputs		(Level 3)
		Identical Assets			(Level 2)
		(Level 1)
	Cash equivalents and short-term investments:
	U.S. government treasuries and agencies securities	$	112,253		$	—	$	—	$	112,253
	Money market funds	53,430			—		—		53,430
	Asset-backed securities	—			22,332		—		22,332
	Corporate bonds	—			199,806		—		199,806
	International government bonds	—			3,014		—		3,014
	Corporate commercial paper	—			6,246		—		6,246
	Bank deposits	—			18,538		—		18,538
	Repurchase agreements	—			46		—		46
	Municipal bonds	—			9,210		—		9,210
	Total assets measured at fair value	$	165,683		$	259,192	$	—	$	424,875
	Liabilities:
	Fair value of contingent consideration	—			—		2,140		2,140
	Total liabilities measured at fair value	$	—		$	—	$	2,140	$	2,140
	The following table summarizes the Company’s financial assets and liabilities measured at fair value on a recurring basis as of March 31, 2013:
		Fair Value at Reporting Date Using
		Quoted Prices in			Significant Other		Significant Unobservable Inputs		Total
		Active Markets for			Observable Inputs		(Level 3)
		Identical Assets			(Level 2)
	(in thousands)	(Level 1)
	Cash equivalents and short-term investments:
	U.S. government treasuries and agencies securities	$	87,379		$	—	$	—	$	87,379
	Money market funds	79,083			—		—		79,083
	Asset-backed securities				9,855				9,855
	Corporate bonds	—			58,716		—		58,716
	International government bonds	—			3,066				3,066
	Bank deposits	—			16,583		—		16,583
	Municipal bonds	—			2,094		—		2,094
	Total assets measured at fair value	$	166,462		$	90,314	$	—	$	256,776
	Liabilities:
	Fair value of contingent consideration	—			—		6,695		6,695
	Total liabilities measured at fair value	$	—		$	—	$	6,695	$	6,695
	U.S. government treasuries and U.S. government agency securities as of March 30, 2014 and March 31, 2013 do not include any U.S. government guaranteed bank issued paper. Corporate bonds include bank-issued securities that are guaranteed by the Federal Deposit Insurance Corporation (FDIC).
	The securities in Level 1 are highly liquid and actively traded in exchange markets or over-the-counter markets. Level 2 fixed income securities are priced using quoted market prices for similar instruments, non-binding market prices that are corroborated by observable market data.
	In connection with the acquisitions of Fox Enterprises and Alvand Technologies (See "Note 3 - Business Combinations"), liabilities were recognized for the Company’s estimate of the fair value of contingent consideration on the acquisition dates based on probability-based forecasted revenues, gross profits and attainment of product development milestones. These fair value measurements are based on significant inputs not observed in the market and thus represent a Level 3 measurement, which reflect the Company’s own assumptions concerning future revenues, gross profit and product development milestones of the acquired businesses in measuring fair value. During the fiscal year 2014, the Company settled the contingent consideration with Fox and paid $3.3 million to the former shareholders of Fox. Also during the fiscal year 2014 the Company paid $1.8 million in contingent consideration for Alvand Technologies. The remaining estimated fair value of the contingent consideration for Alvand Technologies as of March 30, 2014 was $2.1 million.
	The following table summarizes the change in the fair value of liabilities measured using significant unobservable inputs (Level 3) for fiscal 2014:
	(in thousands)	Estimated Fair Value
	Balance as of March 31, 2013	$	6,695
	Changes of fair value during the year	575
	Payment made during the year	(5,130		)
	Balance as of March 30, 2014	$	2,140
	Cash equivalents are highly liquid investments with original maturities of three months or less at the time of purchase. The Company maintains its cash and cash equivalents with reputable major financial institutions.  Deposits with these banks may exceed the FDIC insurance limits or similar limits in foreign jurisdictions. These deposits typically may be redeemed upon demand and, therefore, bear minimal risk.  While the Company monitors daily the cash balances in its operating accounts and adjusts the balances as appropriate, these balances could be affected if one or more of the financial institutions with which the Company deposits fails or is subject to other adverse conditions in the financial markets.  As of March 30, 2014, the Company has not experienced any losses in its operating accounts.
	All of the Company’s available-for-sale investments are subject to a periodic impairment review. Investments are considered to be impaired when a decline in fair value is judged to be other-than-temporary. This determination requires significant judgment. For publicly traded investments, impairment is determined based upon the specific facts and circumstances present at the time, including a review of the closing price over the length of time, general market conditions and the Company’s intent and ability to hold the investment for a period of time sufficient to allow for recovery. Although the Company believes its portfolio continues to be comprised of sound investments due to high credit ratings and government guarantees of the underlying investments, a further decline in the capital and financial markets would adversely impact the market values of its investments and their liquidity. The Company continually monitors the credit risk in its portfolio and future developments in the credit markets and makes appropriate changes to its investment policy as deemed necessary.  The Company did not record any impairment charges related to its available-for-sale investments in fiscal 2014 and 2013.

Investments

Investments	12 Months Ended
	Mar. 30, 2014
Investments, Debt and Equity Securities [Abstract]	'
Investments	'
	Investments
	Available-for-Sale Securities
	Available-for-sale investments at March 30, 2014 were as follows:
		Cost			Gross			Gross			Estimated Fair
	(in thousands)				Unrealized			Unrealized			Value
					Gains			Losses
	U.S. government treasuries and agencies securities	$	112,268		$	76		$	(91	)	$	112,253
	Money market funds	53,430			—			—			53,430
	Asset-backed securities	22,330			11			(9		)	22,332
	Corporate bonds	199,598			335			(127		)	199,806
	International government bonds	3,023			—			(9		)	3,014
	Corporate commercial paper	6,246			—			—			6,246
	Bank deposits	18,538			—			—			18,538
	Repurchase agreements	46			—			—			46
	Municipal bonds	9,196			32			(18		)	9,210
	Total available-for-sale investments	424,675			454			(254		)	424,875
	Less amounts classified as cash equivalents	(62,271		)	—			—			(62,271		)
	Short-term investments	$	362,404		$	454		$	(254	)	$	362,604
	Available-for-sale investments at March 31, 2013 were as follows:
		Cost			Gross			Gross			Estimated Fair
	(in thousands)				Unrealized			Unrealized			Value
					Gains			Losses
	U.S. government treasuries and agencies securities	$	87,356		$	24		$	(1	)	$	87,379
	Money market funds	79,083			—			—			79,083
	Asset-backed securities	9,860			2			(7		)	9,855
	Corporate bonds	58,733			33			(50		)	58,716
	International government bonds	3,069			1			(4		)	3,066
	Bank deposits	16,583			—			—			16,583
	Municipal bonds	2,089			5			—			2,094
	Total available-for-sale investments	256,773			65			(62		)	256,776
	Less amounts classified as cash equivalents	(90,443		)	—			—			(90,443		)
	Short-term investments	$	166,330		$	65		$	(62	)	$	166,333
	The cost and estimated fair value of available-for-sale debt securities at March 30, 2014, by contractual maturity, were as follows:
	(in thousands)	Amortized			Estimated Fair
		Cost			Value
	Due in 1 year or less	$	173,850		$	173,891
	Due in 1-2 years	101,275			101,378
	Due in 2-5 years	149,550			149,606
	Total investments in available-for-sale debt securities	$	424,675		$	424,875
	The cost and estimated fair value of available-for-sale debt securities at March 31, 2013, by contractual maturity, were as follows:
	(in thousands)	Amortized			Estimated Fair
		Cost			Value
	Due in 1 year or less	$	186,747		$	186,771
	Due in 1-2 years	25,053			25,038
	Due in 2-5 years	44,973			44,967
	Total investments in available-for-sale debt securities	$	256,773		$	256,776
	The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses as of March 30, 2014, aggregated by investment category and length of time that individual securities have been in a continuous loss position.
		Less Than 12 Months						12 Months or Greater						Total
	(in thousands)	Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
		Value			Loss			Value			Loss			Value		Loss
	Corporate bonds	$	52,783		$	(127	)	$	—		$	—		$	52,783	$	(127	)
	Asset-backed securities	11,156			(9		)	—			—			11,156		(9		)
	U.S. government treasuries and agencies securities	36,403			(91		)	—			—			36,403		(91		)
	Municipal bonds	$	4,000		$	(18	)	—			—			4,000		(18		)
	International government bonds	3,014			(9		)	—			—			3,014		(9		)
	Total	$	107,356		$	(254	)	$	—		$	—		$	107,356	$	(254	)
	The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses, as of March 31, 2013, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position.
		Less Than 12 Months						12 Months or Greater						Total
		Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
	(in thousands)	Value			Loss			Value			Loss			Value		Loss
	Corporate bonds	$	32,009		$	(50	)	$	—		$	—		$	32,009	$	(50	)
	Asset-backed securities	6,473			(7		)							6,473		(7		)
	U.S. government treasuries and agencies securities	3,324			(1		)	—			—			3,324		(1		)
International government bonds	1,007			(4		)	—			—			1,007		(4		)
Total	$	42,813		$	(62	)	$	—		$	—		$	42,813	$	(62	)
Currently, a significant portion of the Company’s available-for-sale investments that it holds are high grade instruments.  As of March 30, 2014, the unrealized losses on the Company’s available-for-sale investments represented an insignificant amount in relation to its total available-for-sale portfolio. Substantially all of the Company’s unrealized losses on its available-for-sale marketable debt instruments can be attributed to fair value fluctuations in an unstable credit environment that resulted in a decrease in the market liquidity for debt instruments.  Because the Company has the ability to hold these investments until a recovery of fair value, which may be maturity, the Company did not consider these investments to be other-than-temporarily impaired at March 30, 2014 or March 31, 2013.
Non-Marketable Equity Securities
The Company accounts for its equity investments in privately held companies under the cost method.  These investments are subject to periodic impairment review and measured and recorded at fair value when they are deemed to be other-than-temporarily impaired. In determining whether a decline in value of its investment has occurred and is other than temporary, an assessment was made by considering available evidence, including the general market conditions, the investee’s financial condition, near-term prospects, market comparables and subsequent rounds of financing.   The valuation also takes into account the investee’s capital structure, liquidation preferences for its capital and other economic variables. The valuation methodology for determining the decline in value of non-marketable equity securities is based on inputs that require management's judgment.
During fiscal 2013, the Company determined that the carrying values of two of its non-marketable private equity investments were impaired and recorded a $1.7 million other-than-temporary impairment loss during the period. During fiscal 2012 the Company determined that the carrying values of two of its non-marketable private equity investments were impaired and recorded a $3.4 million other-than-temporary impairment loss during the period. Also during fiscal 2012, the Company sold a non-marketable equity security for $2.6 million and recorded a gain on sale of $0.6 million in the period. The aggregate carrying value of the Company’s non-marketable equity securities was zero as of March 30, 2014 and March 31, 2013, respectively.  The Company did not recognize any impairment loss in fiscal 2014.

StockBased_Employee_Compensati

Stock-Based Employee Compensation	12 Months Ended
	Mar. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock-Based Employee Compensation	'
	Stock-Based Employee Compensation
	Equity Incentive Programs
	The Company currently issues awards under three equity-based plans in order to provide additional incentive and retention to directors and employees who are considered to be essential to the long-range success of the Company.  These plans are further described below.
	2004 Equity Plan (2004 Plan)
	In September 2004, the Company’s stockholders approved the 2004 Plan.  On July 21, 2010, the Board of Directors of the Company approved an amendment to the Company’s 2004 Plan to increase the number of shares of common stock reserved for issuance thereunder from 28,500,000 shares to 36,800,000 shares (an increase of 8,300,000 shares), provided, however, that the aggregate number of common shares available for issuance under the 2004 Plan is reduced by 1.74 shares for each common share delivered in settlement of any full value award, which are awards other than stock options and stock appreciation rights, that are granted under the 2004 Plan on or after September 23, 2010.  On September 23, 2010, the stockholders of the Company approved the proposed amendment described above, which also includes certain other changes to the 2004 Plan, including an extension of the term of the 2004 Plan. Options granted by the Company under the 2004 Plan generally expire seven years from the date of grant and generally vest over a four-year period from the date of grant, with one-quarter of the shares of common stock vesting on the one-year anniversary of the grant date and the remaining shares vesting monthly for the 36 months thereafter.  The exercise price of the options granted by the Company under the 2004 Plan shall not be less than 100% of the fair market value for a common share subject to such option on the date the option is granted.  Full value awards made under the 2004 Plan shall become vested over a period of not less than 3 years (or, if vesting is performance-based, over a period of not less than one year) following the date such award is made; provided, however, that full value awards that result in the issuance of an aggregate of up to 5% of common stock available under the 2004 Plan may be granted to any one or more participants without respect to such minimum vesting provisions.   As of March 30, 2014, there were 14.6 million shares available for future grant under the 2004 Plan.
	Compensation Expense
	The following table summarizes stock-based compensation expense by line items appearing in the Company’s Consolidated Statement of Operations:
		Fiscal Year Ended
	(in thousands)	March 30,				March 31,				April 1,
		2014				2013				2012
	Cost of revenue	$	1,189			$	1,113			$	1,784
	Research and development	5,601				6,692				8,566
	Selling, general and administrative	5,887				5,250				5,983
	Discontinued operations	675				217				400
	Total stock-based compensation expense	$	13,352			$	13,272			$	16,733
	The amount of stock-based compensation expense that was capitalized during the periods presented above was immaterial. Stock-based compensation expense recognized in the Consolidated Statements of Operations is based on awards ultimately expected to vest.  The authoritative guidance for stock-based compensation requires forfeitures to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. The Company attributes the value of stock-based compensation to expense on an accelerated method.
	Valuation Assumptions
	The Company uses the Black-Scholes option-pricing model as its method of valuation for stock-based awards. The Company’s determination of the fair value of stock-based payment awards on the date of grant using an option-pricing model is affected by the Company’s stock price, as well as assumptions regarding a number of subjective variables. These variables include, but are not limited to, the Company’s expected stock price volatility over the term of the awards, as well as the expected term of the awards.
		Fiscal Year Ended
		March 30,				March 31,				April 1,
		2014				2013				2012
	Stock option plans:
	Expected term	4.60 years				4.64 years				4.31 years
	Risk-free interest rate	0.95		%		0.73		%		1.33		%
	Volatility	40.1		%		45		%		43.5		%
	Dividend yield	—		%		—		%		—		%
	Weighted-average grant-date fair value	$	2.99			$	2.18			$	2.86
	ESPP:
	Expected term	0.25 years				0.25 years				0.25 years
	Risk-free interest rate	0.06		%		0.08		%		0.03		%
	Volatility	35.5		%		35		%		47.7		%
	Dividend yield	—		%		—		%		—		%
	Weighted-average grant-date fair value	$	1.89			$	1.42			$	1.53
	The following is a summary of the Company's stock option activity and related weighted average exercise prices for each category:
		Fiscal 2014
	(shares in thousands)	Shares			Price
	Beginning stock options outstanding	12,817			$	7.12
	Granted	1,946			8.67
	Exercised (1)	(5,766	)		6.48
	Canceled	(3,395	)		8.95
	Ending stock options outstanding	5,602			$	7.21
	Ending stock options exercisable	3,210			$	6.99
	-1	Upon exercise, the Company issues new shares of common stock.
	The following is a summary of information about stock options outstanding at March 30, 2014:
			Options Outstanding						Options Exercisable
	Range of Exercise Prices		Number Outstanding (in thousands)		Weighted-Average		Weighted-Average		Number Exercisable (in thousands)		Weighted-Average
					Remaining Contractual Life		Exercise Price				Exercise Price
					(in years)
	4.84 - 5.33		653		3.5		$5.18		449		$5.13
	5.40-5.75		654		3.58		5.71		542		5.72
	5.77 - 5.77		969		5.1		5.77		348		5.77
	5.79-6.00		752		2.08		5.93		707		5.93
	6.04-7.24		358		3.93		6.75		233		6.69
	7.67-7.67		626		6.13		7.67		—		—
	7.81-8.22		106		2.47		8.02		87		8.06
	8.49-8.49		809		4.06		8.49		518		8.49
	8.69-12.51		583		4.84		11.82		233		11.86
	14.15-16.26		92		0.13		15.01		93		15.01
			5,602		4.06		$7.21		3,210		$6.99
	As of March 30, 2014, the weighted-average remaining contractual life of stock options outstanding was 4.06 years and the aggregate intrinsic value was $26.9 million.  The weighted-average remaining contractual life of stock options exercisable was 3.03 years and the aggregate intrinsic value was $16.3 million.  Unrecognized compensation cost related to non-vested stock options, net of estimated forfeitures, was $2.3 million and will be recognized over a weighted-average period of 1.15 years.
	As of March 30, 2014, stock options vested and expected to vest totaled approximately 5.1 million with a weighted-average exercise price of $7.15 and a weighted-average remaining contractual life of 3.91 years.  The aggregate intrinsic value as of March 30, 2014 was approximately $25.0 million.
	Restricted Stock Units
	Restricted stock units granted by the Company under the 2004 Plan generally vest over at least a three year period from the grant date with one-third of restricted stock units vesting on each one-year anniversary. As of March 30, 2014, 2.9 million restricted stock unit awards were outstanding under the 2004 Plan.
The following table summarizes the Company’s restricted stock unit activity and related weighted-average exercise prices for each category:
	Fiscal 2014
(shares in thousands)	Shares			Weighted-
				Average
				Grant Date
				Fair Value
				Per Share
Beginning RSUs outstanding	2,591			$	6.26
Granted	2,123			8.17
Released	(901	)		6.26
Forfeited	(889	)		6.98
Ending RSUs outstanding	2,924			$	7.43
As of March 30, 2014, restricted stock units expected to vest totaled approximately 2.4 million with a weighted-average remaining contract life of 1.24 years.  The aggregate intrinsic value was approximately $29.0 million.
Performance-Based Stock Units
In fiscal 2013, the Compensation Committee (the Committee) of the Board of Directors of IDT approved the Company’s Executive Retention Plan (the Retention Plan), in which each of the President and Chief Executive Officer’s direct reports are eligible to participate. The Retention Plan provides for the grant of performance-based stock units under the 2004 Plan which vest and convert into between zero and one and a half shares of the Company's common stock based on the level of achievement of pre-established performance goals during a specified performance period. The initial performance period under the Retention Plan is the Company’s fiscal year 2014 for which performance goals related to the Company’s annual non-GAAP operating margin and revenue growth relative to a peer group of companies, weighted 60% and 40%, respectively, were established by the Committee. Any shares of Company common stock earned by performance stock unit holders will vest and be issued in two equal installments, the first on the date the Committee determines the achievement of the performance goals and the second on the first anniversary of such determination. Management evaluates, on a quarterly basis, the likelihood of the Company meeting its performance metrics in determining stock-based compensation expense for the Retention Plan.
In addition, the Committee approved the Company's Key Talent Incentive Plan (Incentive Plan). The Incentive Plan provides for the grant of performance-based stock units under the 2004 Plan which vest and convert into one share of the Company's common stock based on the level of achievement of pre-established performance goals during a specified performance period. The initial performance period under the Incentive Plan is the Company's fourth quarter of fiscal 2013 through the fourth quarter of fiscal 2016 for which performance goals relate to cumulative revenue targets for a specific product group. Any shares of Company common stock earned by performance stock unit holders will vest and be issued quarterly based on the achievement of the performance goals. Management evaluates, on a quarterly basis, the likelihood of the Company meeting its performance metrics in determining stock-based compensation expense for the Incentive Plan.
The following table summarizes the Company’s performance stock unit activity and related weighted-average exercise prices for each category:
	Fiscal 2014
(shares in thousands)	Shares			Weighted-
				Average
				Grant Date
				Fair Value
				Per Share
Beginning PSUs outstanding	744			$	7.5
Granted	491			8.46
Released	—			—
Forfeited	(431	)		8.04
Ending PSUs outstanding	804			$	7.79
As of March 30, 2014, performance stock units expected to vest totaled approximately 0.6 million with a weighted-average remaining contract life of 1.20 years.  The aggregate intrinsic value was approximately $7.6 million.
2009 Employee Stock Purchase Plan (2009 ESPP)
On June 18, 2009, the Board approved implementation of the 2009 Employee Stock Purchase Plan (2009 ESPP) and authorized the reservation and issuance of up to 9,000,000 shares of the Company’s common stock, subject to stockholder approval. On September 17, 2009, the Company’s stockholders approved the plan at the 2009 Annual Meeting of Stockholders.  The 2009 ESPP is intended to be implemented in successive quarterly purchase periods commencing on the first day of each fiscal quarter of the Company.  In order to maintain its qualified status under Section 423 of the Internal Revenue Code, the 2009 ESPP imposes certain restrictions, including the limitation that no employee is permitted to participate in the 2009 ESPP if the rights of such employee to purchase common stock of the Company under the 2009 ESPP and all similar purchase plans of the Company or its subsidiaries would accrue at a rate which exceeds $25,000 of the fair market value of such stock (determined at the time the right is granted) for each calendar year. At the 2012 annual meeting of stockholders on September 13, 2012, the Company's stockholders approved an additional 5,000,000 shares. On July 12, 2013, the Company filed an a registration statement on Form S-8 with the SEC to add the additional shares to the 2009 ESPP. The number of shares of common stock reserved for issuance thereunder increased from 9,000,000 shares to 14,000,000 shares.
Activity under the Company’s ESPP is summarized in the following table:
(in thousands, except per share amounts)	Fiscal 2014				Fiscal 2013				Fiscal 2012
Number of shares issued	1,206				1,679				2,351
Average issuance price	$	7.23			$	5.13			$	4.83
Number of shares available at year-end	5,019				1,226				2,905

Stockholders_Equity

Stockholders' Equity	12 Months Ended
	Mar. 30, 2014
Equity [Abstract]	'
Stockholders' Equity	'
	Stockholders' Equity
	Stock Repurchase Program. On July 21, 2010, the Company’s Board of Directors approved a share repurchase plan to repurchase up to $225 million of its common stock. In fiscal 2012, the Company repurchased approximately 10.4 million shares at an average price of $6.49 per share for a total purchase price of $67.5 million under this program. In fiscal 2013, the Company made no repurchases under the program. On October 22, 2013, the Company's Board approved a new share repurchase authorization for $150 million. In fiscal 2014, the Company repurchased 4.1 million shares for $44.0 million.
	As of March 30, 2014, approximately $106 million was available for future purchase under this new share repurchase program.  Share repurchases were recorded as treasury stock and resulted in a reduction of stockholders’ equity.   The program is intended to reduce the number of outstanding shares of Common Stock to offset dilution from employee equity grants and increase stockholder value.

Balance_Sheet_Detail

Balance Sheet Detail	12 Months Ended
	Mar. 30, 2014
Balance Sheet Related Disclosures [Abstract]	'
Balance Sheet Detail	'
	Balance Sheet Detail
	(in thousands)	March 30,			March 31,
		2014			2013
	Inventories, net
	Raw materials	$	7,745		$	7,008
	Work-in-process	18,436			24,123
	Finished goods	23,441			25,424
	Total inventories, net	$	49,622		$	56,555
	Property, plant and equipment, net
	Land	$	11,724		$	11,832
	Machinery and equipment	289,393			296,174
	Building and leasehold improvements	48,558			48,991
	Total property, plant and equipment, gross	349,675			356,997
	Less: accumulated depreciation *	(279,848		)	(282,009		)
	Total property, plant and equipment, net **	$	69,827		$	74,988
	Other current liabilities
	Short-term portion of supplier obligations ***	$	762		$	407
	Other ****	10,763			14,245
	Total other current liabilities	$	11,525		$	14,652
	Other long-term obligations
	Deferred compensation related liabilities	$	13,786		$	14,615
	Other	4,897			7,407
	Total other long-term liabilities	$	18,683		$	22,022
	* Depreciation expense was $20.9 million, $20.1 million and $18.8 million for fiscal 2014, fiscal 2013 and fiscal 2012, respectively.
	** The Company envisions fully divesting its HSC business and has classified these assets as held for sale. As of March 30, 2014, the HSC business had of $2.9 million in fixed assets classified as held for sale.
	*** Supplier obligations represent payments due under various software design tool and technology license agreements.
	**** Other current liabilities consist primarily of acquisition related accrued contingent liabilities, accrued royalties and outside commissions, accrued severance costs and other accrued unbilled expenses.

Deferred_Income_on_Shipments_t

Deferred Income on Shipments to Distributors	12 Months Ended
	Mar. 30, 2014
Deferred Revenue Disclosure [Abstract]	'
Deferred Income on Shipments to Distributors	'
	Deferred Income on Shipments to Distributors
	Included in the caption “Deferred income on shipments to distributors” on the Consolidated Balance Sheets are amounts related to shipments to certain distributors for which revenue is not recognized until the Company's product has been sold by the distributor to an end customer. The components of deferred income on shipments to distributors as of March 30, 2014 and March 31, 2013 were as follows:
		Fiscal Year Ended
	(in thousands)	March 30,			March 31,
		2014			2013
	Gross deferred revenue	$	17,261		$	17,581
	Gross deferred costs	(3,255		)	(3,042		)
	Deferred income on shipments to distributors	$	14,006		$	14,539
	The gross deferred revenue represents the gross value of shipments to distributors at the list price billed to the distributor less any price protection credits provided to them in connection with reductions in list price while the products remain in their inventory.  The amount ultimately recognized as revenue will be lower than this amount as a result of ship from stock pricing credits which are issued in connection with the sell through of the Company's products to end customers. Historically, this amount represents on average approximately 37% of the list price billed to the customer.  The gross deferred costs represent the standard costs (which approximate actual costs) of products the Company sells to the distributors.  Although the Company monitors the levels and quality of inventory in the distribution channel, the Company's experience is that products returned from these distributors may be sold to a different distributor or in a different region of the world.  As such, inventory write-downs for products in the distribution channel have not been significant.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income	12 Months Ended
	Mar. 30, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]	'
Accumulated Other Comprehensive Income	'
	Accumulated Other Comprehensive Income
	Changes in the balance of accumulated other comprehensive income, net of taxes, by component consisted of the following:
	(in thousands)	Cumulative translation adjustments				Unrealized gain on available-for-sale investments			Pension adjustments			Total
	Balance, March 31, 2013	$	1,563			$	—		$	(77	)	$	1,486
	Other comprehensive income (loss) before reclassifications	(66		)		291			1			226
	Amounts reclassified out of AOCI	—				(97		)	(6		)	(103		)
	Net current-period other comprehensive income (loss)	(66		)		194			(5		)	123
	Balance as of March 30, 2014	$	1,497			$	194		$	(82	)	$	1,609
	Comprehensive income components consisted of:
	(in thousands)		March 30,				Location
			2014
	Unrealized holding gains (losses) on available-for-sale investments		$	(97	)		interest and other, net
	Amortization of pension benefits prior service credits		(6		)		operating expense
	Total amounts reclassified out of accumulated other comprehensive income (loss)		$	(103	)

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets, Net	12 Months Ended
	Mar. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets, Net	'
	Goodwill and Intangible Assets, Net
	Goodwill activity for fiscal 2014 and fiscal 2013 was follows:
		Reportable Segment
		Communications			Computing and Consumer			Total
	(in thousands)
	Balance as of April 1, 2012	$	74,673		$	21,419		$	96,092
	Dispositions	—			(700		)	(700		)
	Additions	49,532			—			49,532
	Balance as of March 31, 2013	124,205			20,719			144,924
	Impairment losses	(2,161		)	—			(2,161		)
	Dispositions	—			(7,323		)	(7,323		)
	Additions	204			—			204
	Balance as of March 30, 2014	$	122,248		$	13,396		$	135,644
	In the third quarter of the fiscal year ended March 30, 2014, the Company recorded a $2.1 million goodwill impairment loss associated with its HSC business which was classified as a discontinued operation. The impairment loss was included in loss from discontinued operations.
	In the second quarter of the fiscal year ended March 30, 2014, the Company allocated $7.3 million in goodwill to the sale of certain assets of IDT's PCI Express enterprise flash controller business which was completed on July 12, 2013.
	In the second quarter of the fiscal year ended March 31, 2013, the Company allocated $0.7 million in goodwill to the sale of the video processing business which was completed on August 1, 2012.
	During the fiscal year ended March 31, 2013, the Company acquired $49.5 million in goodwill associated with the acquisitions of Fox Enterprises, Alvand Technologies and NXP B.V.'s data converter business (see Note 3). Goodwill was allocated based on the relative fair value method.
	Goodwill balances as of March 30, 2014 and March 31, 2013 are net of $922.5 million and $920.4 million, respectively, in accumulated impairment losses.
	Intangible asset balances as of March 30, 2014 and March 31, 2013 are summarized as follows:
		March 30, 2014
	(in thousands)	Gross Assets			Accumulated			Net Assets (1)
					Amortization
	Purchased intangible assets:
	Existing technology	$	217,923		$	(203,888	)	$	14,035
	Trademarks	4,411			(2,934		)	1,477
	Customer relationships	131,093			(128,681		)	2,412
	Non-compete agreements	2,275			(1,458		)	817
	Total purchased intangible assets	$	355,702		$	(336,961	)	$	18,741
	(1) Includes $6.6 million in HSC assets held for sale.
		March 31, 2013
	(in thousands)	Gross Assets			Accumulated			Net Assets
					Amortization
	Purchased intangible assets:
	Existing technology	$	241,197		$	(203,129	)	$	38,068
	Trademarks	4,411			(2,018		)	2,393
	Customer relationships	131,931			(128,107		)	$	3,824
	Backlog	1,600			(1,509		)	91
	Non-compete agreements	2,600			(807		)	1,793
	Total amortizable purchased intangible assets	381,739			(335,570		)	46,169
	IPR&D *	2,433			—			2,433
	Total purchased intangible assets	$	384,172		$	(335,570	)	$	48,602
	* IPR&D is initially capitalized at fair value as an intangible asset with an indefinite life and assessed for impairment thereafter. When the IPR&D project is complete, it is reclassified as an amortizable purchased intangible asset and is amortized over its estimated useful life. If an IPR&D project is abandoned, the Company will record a charge for the carrying value of the related intangible asset to its Consolidated Statements of Operations in the period it is abandoned.
	Amortization expense for identified intangibles is summarized below:
		Fiscal Year Ended
	(in thousands)	March 30, 2014			March 31, 2013			April 1, 2012
	Existing technology	$	19,730		$	14,131		$	12,527
	Trademarks	3,405			874			452
	Customer relationships	916			3,225			3,510
	Backlog	91			1,509			—
	Non-compete agreements	651			807			—
	Total	$	24,793		$	20,546		$	16,489
	The intangible assets are being amortized over estimated useful lives of six months to seven years.
	During the fourth quarter of the fiscal year ended in March 30, 2014, the Company initiated actions to discontinue production and sale of products using technology attained through the acquisitions of Mobius Microsystems in fiscal 2010 and IKOR in fiscal 2011. In connection with the decision to discontinue these products, the Company revised the estimated remaining useful life of the related acquired intangible assets, resulting in an additional $8.7 million in accelerated amortization which was charged to cost of revenues in the fourth quarter of fiscal 2014. In addition, the Company recorded a $2.4 million impairment charge to research and development expense associated with the decision to discontinue further development required to complete the Mobius Microsystems acquired in-process research and development.
	Based on the intangible assets recorded at March 30, 2014, excluding held for sale intangible assets which are no longer amortized, and assuming no subsequent additions to or impairment of the underlying assets, the remaining estimated amortization expense is expected to be as follows (in thousands):
	Fiscal Year	Amount
	2015	$	6,572
	2016	3,083
	2017	2,185
	2018	256
	2019 and thereafter	10
	Total	$	12,106

Restructuring

Restructuring	12 Months Ended
	Mar. 30, 2014
Restructuring and Related Activities [Abstract]	'
Restructuring	'
	Restructuring
	The following table shows the provision of the restructuring charges and the liability remaining as of March 30, 2014:
	(in thousands)	Cost of Revenues			Operating Expenses			Total
	Balance as of April 3, 2011	$	9,187		$	815		$	10,002
	Provision	(1,425		)	4,515			3,090
	Cash payments	(6,156		)	(1,738		)	(7,894		)
	Balance as of April 1, 2012	1,606			3,592			5,198
	Provision	557			5,277			5,834
	Cash payments	(2,137		)	(7,233		)	(9,370		)
	Balance as of March 31, 2013	26			1,636			1,662
	Provision	—			5,538			5,538
	Cash payments	(26		)	(6,536		)	(6,562		)
	Balance as of March 30, 2014	$	—		$	638		$	638
	Restructuring Actions
	As part of an effort to streamline operations with changing market conditions and to create a more efficient organization, the Company has undertaken restructuring actions to reduce its workforce and consolidate facilities.  The Company’s restructuring expenses were primarily of: (i) severance and termination benefit costs related to the reduction of its workforce; and (ii) lease termination costs and costs associated with permanently vacating certain facilities.
	During fiscal 2014, the Company recorded restructuring charges of $5.5 million and reduced headcount by 117 employees for multiple reduction in workforce actions. During fiscal 2014, the Company paid $4.9 million related to these actions. As of March 30, 2014, the total accrued balance for employee severance costs related to these restructuring actions was $0.6 million. The Company expects to complete these restructuring actions by the second quarter of fiscal 2015.
	During fiscal 2013, the Company recorded restructuring charges of $4.3 million for multiple reduction in workforce actions. The Company reduced its total headcount by approximately 132 employees with reductions affecting all functional areas and various locations. During fiscal 2013, the Company paid $3.2 million in severance costs associated with these actions. During the first quarter of fiscal 2014, the Company paid $1.1 million in severance costs and completed these actions.
	In connection with the Company's divestiture of its smart metering business, during fiscal 2013, the Company recorded $0.4 million in restructuring expenses for employee severance costs. During fiscal 2014, the Company paid $0.4 million and completed this action.
	In connection with the Company's divestiture of its video processing product lines, during fiscal 2012, the Company recorded $3.6 million in restructuring expenses for employee retention costs. These costs have been classified within discontinued operations. During fiscal 2013, the Company recorded an additional $1.1 million employee retention costs under this plan. These charges were recorded within discontinued operations. The Company paid $4.7 million in fiscal 2013 and completed this restructuring action.
	In connection with the Company's transition of the manufacture of products to Taiwan Semiconductor Manufacturing Limited (TSMC), the Company accrued restructuring expenses of $4.8 million for severance payments and other benefits associated with this restructuring action in fiscal 2010. During fiscal 2012, the Company decreased this accrual by $3.1 million based on the actual number of employees that were offered employment with the acquirer of the wafer fabrication facility. During fiscal 2012, the Company recorded prior period adjustments of $4.1 million for employee retention costs related to fiscal 2010 and fiscal 2011 and an additional $2.5 million for employee retention costs was recorded in fiscal 2012. During fiscal 2013, the Company paid $1.0 million in employee retention costs and completed the restructuring action to exit wafer production operations at its Oregon fabrication facility.
	In connection with discontinuing manufacturing operations at its Singapore facility, the Company exited its leased facility in Singapore in fiscal 2011. As a result, the Company recorded lease impairment charges of approximately $0.5 million in fiscal 2011, which represented the future rental payments under the agreements, reduced by an estimate of sublease incomes and discounted to present value using an interest rate applicable to the Company. These charges were recorded as cost of goods sold. Since the initial restructuring, the Company has made lease payments of $0.5 million, completing the final payment of the facility lease charges during fiscal 2013.
	In connection with the divestitures of Silicon Logic Engineering business in the third quarter of fiscal 2010, the Company exited certain leased facilities. As a result, the Company recorded lease impairment charges of approximately $0.9 million, which represented the future rental payments under the agreements, reduced by an estimate of sublease incomes and discounted to present value using an interest rate applicable to the Company. These charges were recorded as selling, general and administrative expense. The Company completed the restructuring plan in fiscal 2012.
	During the second quarter of fiscal 2006, the Company completed the consolidation of its Northern California workforce into its San Jose headquarters and exited a leased facility in Salinas, California. The Company recorded lease impairment charges of approximately $2.1 million, of which $0.6 million was recorded as cost of revenues, and $0.9 million was recorded as research and development expense and $0.6 million was recorded as selling, general and administrative expense. Since the initial restructuring, the Company has made lease payments of $2.1 million, completing the final $0.2 million payment of the facility lease charges during fiscal 2014.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Mar. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	Guarantees
	As of March 30, 2014, the Company’s financial guarantees consisted of guarantees and standby letters of credit, which are primarily related to the Company’s electrical utilities in Malaysia, utilization of non-country nationals in Malaysia, consumption tax in Japan and value-added tax obligations in Holland, office rental in Italy and a workers’ compensation plan in the United States. The maximum amount of potential future payments under these arrangements is approximately $2.2 million.
	Commitments
	Although the Company owns its corporate headquarters in San Jose, California, the Company leases various administrative facilities under operating leases which expire at various dates through fiscal 2019.
	As of March 30, 2014, aggregate future minimum commitments for the next five fiscal years and thereafter under all operating leases, excluding leases in which amounts have been accrued for impairment charges, were as follows (in thousands):
	Fiscal Year	Amount
	2015	$	3,926
	2016	3,691
	2017	2,995
	2018	2,804
	2019 and thereafter	3,790
	Total	$	17,206
	Rent expense for the fiscal years ended March 30, 2014, March 31, 2013 and April 1, 2012 totaled approximately $4.6 million, $4.7 million and $3.7 million, respectively.   Other supplier obligations including payments due under various software design tool and technology license agreements totaled $4.2 million and $10.3 million as of March 30, 2014 and March 31, 2013, respectively.
	Indemnification
	During the normal course of business, the Company makes certain indemnifications and commitments under which it may be required to make payments in relation to certain transactions.  In addition to indemnifications related to non-infringement of patents and intellectual property, other indemnifications include indemnification of the Company’s directors and officers in connection with legal proceedings, indemnification of various lessors in connection with facility leases for certain claims arising from such facility or lease, and indemnification of other parties to certain acquisition agreements. The duration of these indemnifications and commitments varies, and in certain cases, is indefinite. The Company believes that substantially all of its indemnities and commitments provide for limitations on the maximum potential future payments the Company could be obligated to make. However, the Company is unable to estimate the maximum amount of liability related to its indemnities and commitments because such liabilities are contingent upon the occurrence of events which are not reasonably determinable.  The Company believes that any liability for these indemnities and commitments would not be material to its accompanying consolidated financial statements.
	The Company maintains an accrual for obligations it incurs under its standard product warranty program and customer, part, or process specific matters. The Company’s standard warranty period is one year; however, in certain instances the warranty period may be extended to as long as two years. Management estimates the fair value of the Company’s warranty liability based on actual past warranty claims experience, its policies regarding customer warranty returns and other estimates about the timing and disposition of product returned under the standard program. Customer, part, or process specific accruals are estimated using a specific identification method. Historical profit and loss impact related to warranty returns activity has been minimal. The total warranty accrual was $0.3 million and $0.2 million as of March 30, 2014 and March 31, 2013, respectively.
	Litigation
	In January 2012, Maxim I Properties, a general partnership that had purchased a certain parcel of real property (the Property) in 2003, filed a complaint in the Northern District of California naming approximately 30 defendants, including the Company, alleging various environmental violations of the federal Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) and Resource Conservation and Recovery Act (RCRA), the California Hazardous Substance Account Act (HSAA), and other common law claims (the Complaint). The Complaint alleges with regard to the Company that IDT “…generated, transported, and/or arranged for the transport and/or disposal of hazardous waste to the Property.” The Complaint further alleges that the Defendants are liable for the costs of investigation and remediation of the Property due to the release of hazardous substances, and that Defendants violated their duty to prevent the release of such hazardous substances. In March 2012, the Company was served with and filed an answer to the Complaint, denying the various allegations in the Complaint. In April 2012, the Company filed an amended answer to the Complaint, including a counterclaim against the plaintiff. On August 15, 2012, the plaintiff voluntarily dismissed its Complaint against the Company without prejudice. Moyer Products, Inc., another defendant, has counter-claimed against Maxim and cross-claimed against Defendants, including the Company, and thus the Company remains a defendant in this action. In September 2012, the California Department of Toxic Substances Control (DTSC) notified the Company that it identified the Company, along with more than 50 other entities, and included the Company as a respondent to DTSC's Enforcement Order, as “a generator of hazardous waste” that was sent to the Property. In April 2013, the Company, along with the other “respondent” parties, entered into a Corrective Action Consent Agreement (CACA) to conduct the Property investigation and corrective action selection. The CACA supersedes the Enforcement Order. In February 2013, the court stayed the Maxim/Moyer litigation pending the Property investigation under the CACA and DTSC's corrective action selection. The Company will continue to vigorously defend itself against the allegations in the Complaint and evaluate settlement options with Moyer upon completion of the Property investigation and corrective action selection. Because the case is at an early stage and no specific monetary demands have been made, it is not possible for us to estimate the potential loss or range of potential losses.
	The Company is also party to various other legal proceedings and claims arising in the normal course of business. As of March 30, 2014, the Company has not recorded any accrual for contingent liabilities associated with its legal proceedings based on the belief that liabilities, while possible, are not probable. Further, probable losses or ranges of possible losses in these matters cannot be reasonably estimated at this time. Generally, litigation is subject to inherent uncertainties, and no assurance can be given that the Company will prevail in any particular lawsuit. Accordingly, pending lawsuits, as well as potential future litigation with other companies, could result in substantial costs and diversion of resources and could have a material adverse effect on the Company's financial condition, results of operations or cash flows.

Employee_Benefit_Plans

Employee Benefit Plans	12 Months Ended
	Mar. 30, 2014
Compensation and Retirement Disclosure [Abstract]	'
Employee Benefit Plans	'
	Employee Benefit Plans
	401(k) Plan
	The Company sponsors a 401(k) retirement matching plan for qualified domestic employees.  The Company recorded expenses of approximately $2.1 million, $2.6 million and $2.9 million in matching contributions under the plan in fiscal 2014, 2013, and 2012, respectively.
	Deferred Compensation Plans
	Effective November 1, 2000, the Company established an unfunded deferred compensation plan to provide benefits to executive officers and other key employees.  Under the plan, participants can defer any portion of their salary and bonus compensation into the plan and may choose from a portfolio of funds from which earnings are measured.   Participant balances are always 100% vested. As of March 30, 2014 and March 31, 2013, obligations under the plan totaled approximately $13.8 million and $14.6 million, respectively.  Additionally, the Company has set aside assets in a separate trust that is invested in corporate owned life insurance intended to substantially fund the liability under the plan.  As of March 30, 2014 and March 31, 2013, the deferred compensation plan assets were approximately $16.1 million and $17.0 million, respectively.  The Company incurred costs for this plan for insurance, administration and other support of $0.3 million in each of fiscal 2014, 2013 and 2012.
	During the first quarter of fiscal 2013, the Company assumed a deferred compensation plan associated with the acquisition of Fox. Under this plan, participants in retirement are entitled to receive a fixed amount from the Company on a monthly basis. The Company has purchased life insurance policies with the intention of funding the liability under this plan. As of March 30, 2014 and March 31, 2013, the deferred compensation plan assets were approximately $0.7 million. As of March 30, 2014 and March 31, 2013 the liabilities under this plan were approximately $1.6 million.
	International Employee Benefit Plans
	The Company sponsors defined-benefit pension plans, defined-contribution plans, multi-employer plans and other post-employment benefit plans covering employees in certain of the Company's international locations. As of March 30, 2014 and March 31, 2013, the net liability for all of these international benefit plans totaled $1.4 million.
	Pension plan benefits are based primarily on participants’ compensation and years of service credited as specified under the terms of each country’s plan. The funding policy is consistent with the local requirements of each country. The Company does not have defined-benefit pension plans for the its United States-based employees. The projected obligations of international employee defined-benefit pension plans and related offsetting plan assets were determined based on actuarial calculations. As of March 30, 2014, the net accumulated liability for these defined-benefit plans totaled $0.9 million, with unrecognized actuarial losses of $0.2 million and unrecognized prior service gains of $0.1 million. The net period expense was insignificant during fiscal 2014, 2013 and 2012. Distributions made from plans during fiscal 2014, 2013 and 2012 were insignificant. The Company includes accrued net defined-benefit plan obligations in other long-term liabilities on the Company's Consolidated Balance Sheet.

Income_Taxes

Income Taxes	12 Months Ended
	Mar. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	The components of income (loss) before income taxes and the income tax expense (benefit) were as follows:
		Fiscal Year Ended
	(in thousands)	March 30, 2014			March 31, 2013			April 1, 2012
	Income (loss) before income taxes:
	United States	$	9,491		$	(21,206	)	$	(6,126	)
	Foreign	79,865			(970		)	64,765
	Income (loss) before income taxes	$	89,356		$	(22,176	)	$	58,639
	Income tax expense (benefit):
	Current:
	United States	$	(118	)	$	(49	)	$	(321	)
	State	35			128			(118		)
	Foreign	878			1,417			545
		795			1,496			106
	Deferred:
	United States	240			(3,159		)	33
	State	14			(341		)	1
	Foreign	(57		)	—			39
		197			(3,500		)	73
	Income tax expense (benefit)	$	992		$	(2,004	)	$	179
	In fiscal years 2014, 2013 and 2012, approximately zero, zero and $0.6 million, respectively, of U.S. income tax benefits related to the exercise of certain employee stock options decreased income taxes payable and were credited to additional paid-in capital.
	Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of deferred tax assets and liabilities were as follows:
	(in thousands)	March 30, 2014			March 31, 2013
	Deferred tax assets:
	Deferred income on shipments to distributors	$	2,666		$	2,576
	Non-deductible accruals and reserves	10,233			9,778
	Inventory related and other expenses	1,761			1,427
	Net operating losses and credit carryforwards	114,858			97,337
	Depreciation and amortization	13,725			24,864
	Stock options	1,713			4,193
	Other	315			369
	Total deferred tax assets	145,271			140,544
	Deferred tax liabilities:
	Purchased intangibles	(558		)	(4,158		)
	U.S. tax on earnings of foreign subsidiaries not indefinitely reinvested	—			—
	Other	(3,087		)	(3,633		)
	Total deferred tax liabilities	(3,645		)	(7,791		)
	Valuation allowance	(143,704		)	(134,633		)
	Net deferred tax liabilities	$	(2,078	)	$	(1,880	)
	The Company maintains a valuation allowance against its deferred tax assets because management is not able to conclude that it is more likely than not that these deferred tax assets will be realized. The Company reached this decision based on judgment, which included consideration of historical losses and projections of future profits. The Company will continue to monitor the need for the valuation allowance on a quarterly basis and may, with further evidence, determine that the valuation allowance is no longer required.  The valuation allowance is based on the Company’s analysis that it is more likely than not that certain deferred tax assets will be realized in the foreseeable future. The net deferred tax liability of $2.1 million relates primarily to unremitted Singapore investment earnings sourced outside Singapore.
	The valuation allowance for deferred tax assets increased by $9.1 million and $3.0 million in fiscal 2014 and fiscal 2013, respectively.
	As of March 30, 2014, the Company had federal and state net operating loss (NOL) carryforwards, net of ASC 740-10 unrecognized tax benefits, of approximately $53.0 million and $104.8 million, respectively, which include excess tax benefits related to stock option exercises.  The Company has approximately $17.2 million of net tax benefits related to excess stock compensation benefits, which are not recorded as deferred tax assets.  These excess stock compensation benefits will be credited to additional paid-in capital when recognized. The federal NOL carryforwards will expire in various fiscal years through 2033, if not utilized.  The state NOL carryforwards will expire in various fiscal years through 2033, if not utilized.  The utilization of NOLs created by acquired companies is subject to annual limitations under Section 382 of the Internal Revenue Code. However, the Company does not expect that such annual limitation will impair the realization of these NOLs.
	As of March 30, 2014, the Company had approximately $54.4 million of federal research and development tax credit carryforwards, and $16.8 million of foreign tax credit carryforwards. The federal research and development tax credit carryforwards will expire in fiscal years 2014 through 2033, if not utilized, and the foreign tax credit carryforwards will expire in fiscal years 2014 to 2023, if not utilized. The Company also had, as of March 30, 2014, approximately $78.0 million of state income tax credit carryforwards, of which $4.7 million will expire in various fiscal years through 2028, if not utilized.
	Reconciliation between the statutory U.S. income tax rate of 35% and the effective rate is as follows:
		Fiscal Year Ended
	(in thousands)	March 30,			March 31,			April 1,
		2014			2013			2012
	Provision (benefit) at 35% U.S. statutory rate	$	31,275		$	(7,761	)	$	20,756
	State tax, net of federal benefit	32			(119		)	85
	Effect of foreign operations	(24,878		)	2,097			(22,059		)
	Repatriation of foreign earnings	5,623			1,505			1,048
	Net operating losses and tax credits (benefited) not benefited	(11,285		)	(2,640		)	(1,201		)
	Stock-based compensation	(689		)	2,640			4,198
	Liquidation of U.S. subsidiary	—			—			(1,218		)
	Other	914			2,274			(1,430		)
	Income tax expense (benefit)	$	992		$	(2,004	)	$	179
	The Company benefits from tax incentives granted by local tax authorities in certain foreign jurisdictions.  All non-passive income earned in its Malaysia subsidiary is not subject to tax.  The Company was granted a tax holiday in Malaysia during fiscal 2009.  The tax holiday was contingent upon the Company continuing to meet specified investment criteria in fixed assets, and to operate as an APAC regional headquarters center.  In the fourth quarter of fiscal 2011, the Company agreed with the Malaysia Industrial Development Board to cancel this tax holiday and enter into a new tax holiday which is a full tax exemption on statutory income for a period of 10 years commencing April 4, 2011.  This new tax holiday is subject to the Company meeting certain financial targets, investment, headcounts and activities in Malaysia. The impact of these tax holidays decreased foreign taxes by $2.0 million, $4.1 million and $0.2 million for fiscal 2014, 2013 and 2012, respectively. The benefit of the tax holidays on net income per share (diluted) was less than $0.01, $0.03, and less than $0.01 for fiscal 2014, 2013 and 2012, respectively.
	The Company intends to reinvest certain of its foreign earnings indefinitely. Accordingly, no U.S. income taxes have been provided for approximately $772.7 million of undistributed earnings of foreign subsidiaries. It is not practicable for the Company to determine the tax impact of remitting these earnings.
	The following tables summarize the activities of gross unrecognized tax benefits:
		Fiscal Year Ended
		March 30, 2014			March 31, 2013			April 1, 2012
	(in thousands)
	Beginning balance	$	31,066		$	29,718		$	28,471
Increases related to prior year tax positions	90			532			443
Decreases related to prior year tax positions	(301		)	(296		)	—
Increases related to current year tax positions	1,498			1,427			937
Decreases related to the lapsing of statute of limitations	(116		)	(315		)	(133		)
Ending balance	$	32,237		$	31,066		$	29,718
The amount of unrecognized tax benefits that would favorably impact the effective tax rate were approximately $0.2 million and $0.3 million as of March 30, 2014 and March 31, 2013, respectively.  As of March 30, 2014, approximately $27.2 million of unrecognized tax benefits would be offset by a change in valuation allowance.  The Company recognizes potential interest and penalties related to the income tax on the unrecognized tax benefits as a component of income tax expense and accrued approximately zero and $0.1 million for these items in fiscal 2014 and fiscal 2013, respectively.
As of March 30, 2014, the Company was subject to examination in the U.S. federal tax jurisdiction for the fiscal years 2011, 2012, and 2013.  In fiscal 2013, the Internal Revenue Service (IRS) commenced an audit of the Company's federal corporate tax returns for fiscal years 2011, 2012 and 2013. Although the final outcome is uncertain, based on currently available information, the Company believes that the ultimate outcome will not have a material adverse effect on its financial position, cash flows or results of operations.
As of March 30, 2014, the Company was subject to examination in various state and foreign jurisdictions for tax years 2007 forward, none of which were individually material.
During the twelve months beginning March 30, 2014, the Company does not expect its unrecognized tax benefits will materially change from March 30, 2014 balances.  However, the Company notes that the resolution and/or closure of open audits are highly uncertain.

Segment_Information

Segment Information	12 Months Ended
	Mar. 30, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	Segment Information
	The Chief Operating Decision Maker is the Company’s President and Chief Executive Officer.
	The Company's reportable segments include the following:
	•	Communications segment: includes clock and timing solutions, flow-control management devices including Serial RapidIO® switching solutions, multi-port products, telecommunications products, high-speed static random access memory, first in and first out, digital logic, radio frequency, and MEMS Oscillator solutions.
	•	Computing and Consumer segment: includes clock generation and distribution products, high-performance server memory interfaces, PCI Express switching solutions, power management solutions, signal integrity products, and PC audio.
	The tables below provide information about these segments:
	Revenues by segment	Fiscal Year Ended
	(in thousands)	March 30,			March 31,			April 1,
		2014			2013			2012
	Communications	$	292,435		$	258,184		$	248,370
	Computing and Consumer	192,344			226,268			278,326
	Total revenues	$	484,779		$	484,452		$	526,696
	Sales through a distributor, Avnet, represented approximately 12%, 10% and 11% of the Company’s revenues in fiscal 2014, 2013 and 2012, respectively. Sales through another distributor, Maxtek and its affiliates, represented approximately 13% and 15% of the Company’s revenues in fiscal 2013 and 2012, respectively, and sales through another distributor, Uniquest, represented approximately 10%, of the Company's revenues in fiscal 2013 and 2012. Each of these distributors serve customers within both of the Company's reportable segments.
	Income (Loss) by segment from continuing operations	Fiscal Year Ended
		March 30,			March 31,			April 1,
	(in thousands)	2014			2013			2012
	Communications	$	103,457		$	78,995		$	82,178
	Computing and Consumer	(22,658		)	(30,972		)	(21,247		)
	Unallocated expenses:
	Amortization of intangible assets	(21,964		)	(16,339		)	(16,355		)
	Inventory fair market value adjustment	—			(358		)	—
	Impairment of acquired in-process R&D	(2,433		)	—			—
	Gain on divestitures	78,632			7,986			20,656
	Fabrication production transfer costs	—			—			(4,572		)
	Asset impairments and other	(4,113		)	(6,096		)	315
	Amortization of stock-based compensation	(12,677		)	(13,054		)	(16,333		)
	Severance, retention and facility closure costs	(6,590		)	(5,584		)	(2,151		)
	Acquisition-related costs and other	(802		)	(11,238		)	(168		)
	Consulting expenses related to stockholder activities	—			(1,614		)	—
	Deferred compensation plan expense (benefit)	51			(194		)	(74		)
	Life insurance proceeds received	—			2,313			—
	Other-than-temporary loss on investments	—			(1,708		)	(2,797		)
	Interest income and other, net	1,391			(1,546		)	(1,231		)
	Income from continuing operations, before income taxes	$	112,294		$	591		$	38,221
	The Company does not allocate goodwill and intangible assets impairment charge, IPR&D, severance and retention costs, acquisition-related costs, stock-based compensation, interest income and other, and interest expense to its segments.  In addition, the Company does not allocate assets to its segments. The Company excludes these items consistent with the manner in which it internally evaluates its results of operations.
	Revenues from unaffiliated customers by geographic area, based on the customers' shipment locations, were as follows:
		Fiscal Year Ended
	(in thousands)	March 30,			March 31,			April 1,
		2014			2013			2012
	APAC	$	309,121		$	308,409		$	350,105
	Americas (1)	71,305			76,876			76,711
	Japan	40,829			40,281			41,586
	Europe	63,524			58,886			58,294
	Total revenues	$	484,779		$	484,452		$	526,696
	-1	Revenues from the customers in the U.S. were $63.1 million, $69.6 million and $70.4 million in fiscal 2014, 2013 and 2012, respectively.
	The Company’s significant operations outside of the United States include test facility in Malaysia, design centers in the U.S., Canada and China, and sales subsidiaries in Japan, APAC and Europe. The Company's net property, plant and equipment are summarized below by geographic area:
		March 30,			March 31,
	(in thousands)	2014			2013
	United States	$	40,561		$	44,651
	Canada	4,660			5,188
	Malaysia	20,972			21,379
	All other countries	3,634			3,770
	Total property, plant and equipment, net	$	69,827		$	74,988

Derivative_Financial_Instrumen

Derivative Financial Instruments	12 Months Ended
	Mar. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Financial Instruments	'
	Derivative Financial Instruments
	As a result of its international operations, sales and purchase transactions, the Company is subject to risks associated with fluctuating currency exchange rates. The Company may use derivative financial instruments to hedge these risks when instruments are available and cost effective, in an attempt to minimize the impact of currency exchange rate movements on its operating results and on the cost of capital equipment purchases.
	As of March 30, 2014 and March 31, 2013, the Company did not have any outstanding foreign currency contracts that were designated as hedges of forecasted cash flows or capital equipment purchases.  The Company does not enter into derivative financial instruments for speculative or trading purposes. The Company also has foreign exchange facilities used for hedging arrangements with banks that allow the Company to enter into foreign exchange contracts totaling approximately $20.0 million, all of which was available at March 30, 2014.

Credit_Facility

Credit Facility	12 Months Ended
	Mar. 30, 2014
Line of Credit Facility [Abstract]	'
Credit Facility	'
	Credit Facility
	On June 13, 2011, the Company entered into a Master Repurchase Agreement (the Repurchase Agreement) with Bank of America, N.A. (Bank of America), pursuant to which the Company had the right, subject to the terms and conditions of the Repurchase Agreement, to sell to Bank of America up to 1,431 shares of Class A preferred shares of one of its wholly-owned subsidiaries (the Subsidiary), in one or more transactions prior to June 13, 2012, for an aggregate purchase price of $135 million in cash. Pursuant to the Repurchase Agreement, to the extent it sells any such shares to Bank of America, the Company will be obligated to repurchase from Bank of America and Bank of America will be obligated to resell to the Company, those preferred shares for the aggregate purchase price paid by Bank of America. On May 17, 2012, the Company entered into an amendment to the Repurchase Agreement which, among other things, extended the availability of the transactions under the Repurchase Agreement until December 13, 2012. On December 4, 2012, the Company entered into another amendment to the Repurchase Agreement which, among other things, extended the availability of the transactions under the Repurchase Agreement until February 14, 2013.
	Related to the termination of the planned acquisition of PLX, the Company's management determined that it would be in the best interest of IDT to allow the Repurchase Agreement and the related IDT Agreement with Bank of America to lapse undrawn. As a result, the Repurchase Agreement was allowed to lapse undrawn on February 14, 2013. The related IDT Agreement expired as of the same date. Associated with the Repurchase Agreement, the Company had approximately $2.5 million in remaining unamortized financing costs which were originally recorded as other current assets. The Company recognized these remaining financing costs in the fourth quarter of fiscal 2013 as selling, general and administrative expense.

SUPPLEMENTARY_FINANCIAL_INFORM

SUPPLEMENTARY FINANCIAL INFORMATION (UNAUDITED)	12 Months Ended
	Mar. 30, 2014
Quarterly Financial Information Disclosure [Abstract]	'
SUPPLEMENTARY FINANCIAL INFORMATION (UNAUDITED)	'
	SUPPLEMENTARY FINANCIAL INFORMATION (UNAUDITED)
	QUARTERLY RESULTS OF OPERATIONS
	(in thousands, except per share data)
		Fiscal Year Ended March 30, 2014
		First			Second			Third			Fourth
		Quarter			Quarter (1)			Quarter (2)			Quarter (3)
	Revenues	$	117,464		$	124,047		$	124,628		$	118,640
	Gross profit	66,122			70,761			74,939			61,080
	Net income from continuing operations	1,501			87,411			17,339			5,062
	Net loss from discontinued operations	(3,765		)	(3,760		)	(10,391		)	(5,033		)
	Net income (loss)	(2,264		)	83,651			6,948			29
	Basic net income per share – continuing operations	$	0.01		$	0.58		$	0.11		$	0.03
	Basic net loss per share – discontinued operations	$	(0.03	)	$	(0.02	)	$	(0.06	)	$	(0.03	)
	Basic net income (loss) per share	$	(0.02	)	$	0.56		$	0.05		$	—
	Diluted net income per share – continuing operations	$	0.01		$	0.57		$	0.11		$	0.03
	Diluted net loss per share – discontinued operations	$	(0.03	)	$	(0.03	)	$	(0.07	)	$	(0.03	)
	Diluted net income (loss) per share	$	(0.02	)	$	0.54		$	0.04		$	—
		Fiscal Year Ended March 31, 2013
		First			Second			Third			Fourth
		Quarter			Quarter			Quarter			Quarter (4)
	Revenues	$	129,955		$	132,441		$	114,277		$	107,779
	Gross profit	72,668			74,459			63,074			59,523
	Net income (loss) from continuing operations	3,630			4,656			(106		)	(5,469		)
	Net loss from discontinued operations	(7,945		)	(4,729		)	(5,051		)	(5,158		)
	Net loss	(4,315		)	(73		)	(5,157		)	(10,627		)
	Basic net income loss per share – continuing operations	$	0.03		$	0.03		$	—		$	(0.04	)
	Basic net loss per share – discontinued operations	$	(0.06	)	$	(0.03	)	$	(0.04	)	$	(0.03	)
	Basic net loss per share	$	(0.03	)	$	—		$	(0.04	)	$	(0.07	)
	Diluted net income (loss) per share – continuing operations	$	0.03		$	0.03		$	—		$	(0.04	)
	Diluted net loss per share – discontinued operations	$	(0.06	)	$	(0.03	)	$	(0.04	)	$	(0.03	)
	Diluted net loss per share	$	(0.03	)	$	—		$	(0.04	)	$	(0.07	)
	(1) In the second quarter of fiscal 2014, the Company recorded a gain of $82.3 million in net income from continuing operations related to the divestiture of its PCI Express enterprise flash controller business to PMC-Sierra, Inc.
	(2) In the third quarter of fiscal 2014, the Company recorded a loss of $3.4 million in net loss from continuing operations related to the divestiture of certain assets of its Audio business to Stravelis, Inc.
	(3) In the fourth quarter of fiscal 2014, associated with the decision to discontinue production and sale of products using technology attained through the acquisitions of Mobius Microsystems in fiscal 2010 and IKOR in fiscal 2011, the Company recorded an additional $8.7 million in accelerated amortization of intangible assets which was charged to cost of revenues. In addition, the Company recorded a $2.4 million impairment of IPR&D to research and development expense, associated with the decision to discontinue further development required to complete the Mobius Microsystems acquired IPR&D.
	(4) In the fourth quarter of fiscal 2013, the Company recorded a gain of $8.0 million in net income from continuing operations related to the divestiture of its smart meter business.

Valuation_and_Qualifying_Accou

Valuation and Qualifying Accounts	12 Months Ended
	Mar. 30, 2014
Valuation and Qualifying Accounts [Abstract]	'
Valuation and Qualifying Accounts	'
	INTEGRATED DEVICE TECHNOLOGY, INC.
	SCHEDULE II
	VALUATION AND QUALIFYING ACCOUNTS
	(in thousands)	Balance at		Additions			Charged		Deductions			Balance at
		Beginning		Charged			(Credited) to		and			End of Period
		of Period		(Credited) to			Other		Write-offs
				Revenues,			Accounts
				Costs and
				Expenses
	Allowance for returns, pricing credits and doubtful accounts
	Year ended April 1, 2012	$	4,568	$	(772	)	$	124	$	(911	)	$	3,009
	Year ended March 31, 2013	$	3,009	$	134		$	—	$	(356	)	$	2,787
	Year ended March 30, 2014	$	2,787	$	657		$	—	$	(310	)	$	3,134
	Tax valuation allowance
	Year ended April 1, 2012	$	125,760	$	22,508		$	—	$	(16,537	)	$	131,731
	Year ended March 31, 2013	$	131,731	$	34,171		$	—	$	(31,269	)	$	134,633
	Year ended March 30, 2014	$	134,633	$	30,110		$	—	$	(21,039	)	$	143,704

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Mar. 30, 2014
Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation.    The Company's fiscal year is the 52 or 53 week period ending on the Sunday nearest to March 31. Fiscal 2014 included 52 weeks and ended on March 30, 2014. Fiscal 2013 included 52 weeks and ended on March 31, 2013 and fiscal 2012 included 52 weeks and ended on April 1, 2012.
Principles of Consolidation	'
	Principles of Consolidation.   The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All inter-company accounts and transactions have been eliminated.
Use of Estimates	'
	Use of Estimates.   The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents.  Cash equivalents are highly liquid investments with remaining maturities of three months or less at the time of purchase.
Investments	'
	Investments
	Available-for-Sale Investments.  Investments designated as available-for-sale include marketable debt and equity securities.  Available-for-sale investments are classified as short-term, as these investments generally consist of highly marketable securities that are intended to be available to meet near-term cash requirements.  Marketable securities classified as available-for-sale are reported at market value, with net unrealized gains or losses recorded in accumulated other comprehensive income (loss), a separate component of stockholders' equity, until realized.  Realized gains and losses on investments are computed based upon specific identification, are included in interest income and other, net and have not been significant for all periods presented.
	Non-Marketable Equity Securities.  Non-marketable equity securities are accounted for at historical cost or, if the Company has significant influence over the investee, using the equity method of accounting.
	Other-Than-Temporary Impairment.  All of the Company’s available-for-sale investments and non-marketable equity securities are subject to a periodic impairment review.  Investments are considered to be impaired when a decline in fair value is judged to be other-than-temporary.  This determination requires significant judgment.  For publicly traded investments, impairment is determined based upon the specific facts and circumstances present at the time, including a review of the closing price over the previous six months, general market conditions and the Company’s intent and ability to hold the investment for a period of time sufficient to allow for recovery.  For non-marketable equity securities, the impairment analysis requires the identification of events or circumstances that would likely have a significant adverse effect on the fair value of the investment, including revenue and earnings trends, overall business prospects and general market conditions in the investees’ industry or geographic area.  Investments identified as having an indicator of impairment are subject to further analysis to determine if the investment is other-than-temporarily impaired, in which case the investment is written down to its impaired value.
Inventories	'
	Inventories.   Inventories are recorded at the lower of standard cost (which approximates actual cost on a first-in, first-out basis) or market value.  Inventory held at consignment locations is included in finished goods inventory as the Company retains full title and rights to the product.  Inventory valuation includes provisions for excess and obsolete inventory based on management’s forecasts of demand over specific future time horizons and reserves to value the Company's inventory at the lower of cost or market which rely on forecasts of average selling prices (ASPs) in future periods.
Property, Plant and Equipment	'
	Property, Plant and Equipment.    Property, plant and equipment are stated at cost. Property, plant and equipment acquired in conjunction with mergers or acquisitions are stated at estimated fair value at the time of acquisition.  For financial reporting purposes, depreciation is computed using the straight-line method over estimated useful lives of the assets.  Estimated useful lives for major asset categories are as follows: machinery and equipment, 3 to 5 years; and buildings and improvements, 10 to 30 years. Leasehold improvements are amortized over the shorter of the estimated useful lives of the assets or the remaining term of the lease.
Long-Lived Assets and Goodwill	'
	Long-Lived Assets and Goodwill.   The carrying values of long-lived assets, including purchased intangibles are evaluated whenever events or circumstances indicate that the carrying values may not be recoverable. If estimated undiscounted cash flows are not sufficient to recover the carrying values, the affected assets are considered impaired and are written down to their estimated fair value, which is generally determined on the basis of discounted cash flows or outside appraisals.
	The Company tests for impairment of goodwill and other indefinite-lived assets on an annual basis, or more frequently if indicators of impairment are present.  These tests are performed at the reporting unit level using a two-step, fair-value based approach. The first step, used to determine if impairment possibly exists, is to compare the carrying amount of a reporting unit, including goodwill, to its fair value. If the carrying amount of the reporting unit exceeds the fair value, the second step is to measure the amount of impairment loss by comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill.
Income Taxes	'
	Income Taxes.
Revenue Recognition	'
	Revenue Recognition.  The Company’s revenue results from semiconductor products sold through three channels: direct sales to original equipment manufacturers (OEMs) and electronic manufacturing service providers (EMSs), consignment sales to OEMs and EMSs, and sales through distributors.   The Company recognizes revenue when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the price is fixed or determinable, and its ability to collect is reasonably assured.
	Distributors who serve our customers worldwide and distributors who serve our customers in the U.S. and Europe regions, who have stock rotation, price protection and ship from stock pricing adjustment rights, the Company defers revenue and related cost of revenues on sales to these distributors until the product is sold through by the distributor to an end-customer.  Subsequent to shipment to the distributor, the Company may reduce product pricing through price protection based on market conditions, competitive considerations and other factors.  Price protection is granted to distributors on the inventory that they have on hand at the date the price protection is offered.  The Company also grants certain credits to its distributors on specifically identified portions of the distributors’ business to allow them to earn a competitive gross margin on the sale of the Company’s products to their end customers.  As a result of its inability to estimate these credits, the Company has determined that the sales price to these distributors is not fixed or determinable until the final sale to the end-customer.
	In the Asia Pacific region excluding Japan (APAC), the Company has distributors for which revenue is recognized upon shipment, with reserves recorded for the estimated return and pricing adjustment exposures.   The determination of the amount of reserves to be recorded for stock rotation rights requires the Company to make estimates as to the amount of product which will be returned by customers within their limited contractual rights.  The Company utilizes historical return rates to estimate the exposure. In addition, on occasion, the Company can offer pricing adjustments to distributors for product purchased in a given quarter that remains in their inventory.  These amounts are estimated by management based on discussions with customers, assessment of market trends, as well as historical practice.
Shipping and Handling Costs	'
	Shipping and Handling Costs.  The Company includes shipping and handling costs billed to customers in revenues.  The Company’s shipping and handling costs are included in cost of revenues.
Stock-based Compensation	'
	Stock-based Compensation. The fair value of employee restricted stock units is equal to the market value of the Company’s common stock on the date the award is granted.  For performance-based restricted stock units, the Company is required to assess the probability of achieving certain financial objectives at the end of each reporting period. Based on the assessment of this probability, which requires subjective judgment, the Company records stock-based compensation expense before the performance criteria are actually fully achieved, which may then be reversed in future periods if the Company determines that it is no longer probable that the objectives will be achieved. The expected cost of each award is reflected over the performance period and is reduced for estimated forfeitures.
	The Company estimates the fair value of employee stock options and the right to purchase shares under the employee stock purchase plan using the Black-Scholes valuation model, consistent with the FASB’s authoritative guidance for share-based payments.  Option-pricing models require the input of highly subjective assumptions, including the expected term of options and the expected price volatility of the stock underlying such options.  In addition, the Company is required to estimate the number of stock-based awards that will be forfeited due to employee turnover and true up these forfeiture rates when actual results are different from the Company's estimates.  The Company attributes the value of stock-based compensation to expense on an accelerated method.  Finally, the Company capitalizes into inventory a portion of the periodic stock-based compensation expense that relates to employees working in manufacturing activities.
	The Company updates the expected term of stock option grants annually based on its analysis of the stock option exercise behavior over a period of time.  The interest rate used in the Black-Scholes valuation model to value the stock option is based on the average U.S. Treasury interest rate over the expected term during the applicable quarter.  The Company believes that the implied volatility of its common stock is an important consideration of overall market conditions and a good indicator of the expected volatility of its common stock.  However, due to the limited volume of options freely traded over the counter, the Company believes that implied volatility, by itself, is not representative of the expected volatility of its common stock.  Therefore, the Company's volatility factor used to estimate the fair value of its stock-based awards reflects a blend of historical volatility of its common stock and implied volatility of call options and dealer quotes on call options, generally having a term of less than twelve months.  The Company has not paid, nor does it have current plans to pay dividends on its common stock in the foreseeable future.
Comprehensive Income (Loss)	'
	Comprehensive Income (Loss).    Comprehensive income (loss) is comprised of net income and unrealized gains and losses on available-for-sale securities and foreign exchange contracts and changes in pension liabilities. Accumulated other comprehensive income (loss), as presented on the accompanying balance sheets, consists of net unrealized gains and losses on available-for-sale securities and foreign currency translation adjustments, and changes in pension liabilities, net of tax.
Pension and Other Postretirement Plans	'
	Pensions and Other Post-retirement Plans.    The Company, through its actuaries, utilizes assumptions when estimating the liabilities for pension and other employee benefit plans. These assumptions, where applicable, include the discount rates used to determine the actuarial present value of projected benefit obligations, the rate of increase in future compensation levels, the long-term rate of return on assets and the growth in health care costs. The cost of these benefits is recognized in the Consolidated Financial Statements over an employee’s term of service with the Company, and the accrued benefits are reported as other long-term liabilities on the Consolidated Balance Sheets.
Translation of Foreign Currencies	'
	Translation of Foreign Currencies.    For subsidiaries in which the functional currency is the local currency, gains and losses resulting from translation of foreign currency financial statements into U.S. dollars are recorded as a component of accumulated other comprehensive income. For subsidiaries where the functional currency is the U.S. dollar, gains and losses resulting from the process of remeasuring foreign currency financial statements into U.S. dollars are included in interest income and other, net and have not been significant for all periods presented.
Certain Risk and Concentrations	'
	Certain Risk and Concentrations.    The Company's most significant potential exposure to credit concentration risk includes debt-security investments, foreign exchange contracts and trade accounts receivable.  The Company’s investment policy addresses sector and industry concentrations, credit ratings and maturity dates.  The Company invests its excess cash primarily in highly-rated money market and short-term debt instruments, diversifies its investments and, by policy, invests only in highly-rated securities to minimize credit risk.
	The Company sells integrated circuits to OEMs, distributors and EMSs primarily in the U.S., Europe, Japan and APAC. The Company monitors the financial condition of its major customers, including performing credit evaluations of those accounts which management considers to be high risk, and generally does not require collateral from its customers.   When deemed necessary, the Company may limit the credit extended to certain customers.   The Company’s relationship with the customer, and the customer’s past and current payment experience, are also factored into the evaluation in instances in which limited financial information is available. The Company maintains an allowance for doubtful accounts for probable credit losses, including reserves based upon a percentage of total receivables.  When the Company becomes aware that a specific customer may default on its financial obligation, a specific amount, which takes into account the level of risk and the customer’s outstanding accounts receivable balance, is reserved.  These reserved amounts are classified within selling, general and administrative expenses.  Write-offs of accounts receivable balances were not significant in each of the three fiscal years presented.
	Sales through a distributor, Avnet, represented approximately 12%, 10% and 11% of the Company’s revenues in fiscal 2014, 2013 and 2012, respectively. Sales through another distributor, Maxtek and its affiliates, represented approximately 13% and 15% of the Company’s revenues in fiscal 2013 and 2012, respectively, and sales through another distributor, Uniquest, represented approximately 10%, of the Company's revenues in both fiscal 2013 and 2012. As of March 30, 2014, two distributors represented 15%, and 14%, of the Company’s gross accounts receivable. At March 31, 2013, four distributors represented 15%, 15%, 12% and 11% of the Company’s gross accounts receivable.
	For foreign exchange contracts, the Company manages its potential credit exposure primarily by restricting transactions with only high-credit quality counterparties.
	The semiconductor industry is characterized by rapid technological change, competitive pricing pressures, and cyclical market patterns. The Company's results of operations are affected by a wide variety of factors, including general economic conditions, both at home and abroad; economic conditions specific to the semiconductor industry; demand for the Company's products; the timely introduction of new products; implementation of new manufacturing technologies; manufacturing capacity; the availability and cost of materials and supplies; competition; the ability to safeguard patents and intellectual property in a rapidly evolving market; and reliance on assembly and manufacturing foundries, independent distributors and sales representatives. As a result, the Company may experience substantial period-to-period fluctuations in future operating results due to the factors mentioned above or other factors.
Product Warranty	'
	Product Warranty.    The Company maintains a reserve for obligations it incurs under its product warranty program. The standard warranty period offered is one year, though in certain instances the warranty period may be extended to as long as two years.  Management estimates the fair value of its warranty liability based on actual past warranty claims experience, its policies regarding customer warranty returns and other estimates about the timing and disposition of product returned under the program.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements.
	Accounting Pronouncements Recently Adopted
	In July 2012, the Financial Accounting Standards Board (“FASB”) issued an amendment to its guidance regarding the testing of indefinite-lived intangible assets for impairment. This amended guidance allows an entity first to assess qualitative factors to determine whether it is more likely than not that an indefinite-lived intangible asset is impaired as a basis for determining whether it is necessary to perform the quantitative impairment test in accordance with the guidance on the impairment of intangible assets other than goodwill. This amended guidance is effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012. The adoption of this guidance had no impact on the Company’s consolidated financial statements.
	Accounting Pronouncements Not Yet Effective for Fiscal 2014
	In February 2013, the FASB issued guidance for the recognition, measurement and disclosure of certain obligations resulting from joint and several liability arrangements for which the total amount is fixed. Such obligations may include debt arrangements, legal settlements and other contractual arrangements. The guidance is effective for fiscal years and interim periods within those fiscal years beginning after December 15, 2013, which is the first quarter of fiscal 2015 for the Company, and should be applied retrospectively to all prior periods presented for those obligations within the scope which existed as of the beginning of the fiscal year of adoption. Early adoption is permitted. The Company is currently evaluating the new guidance.
	In March 2013, the FASB issued guidance on the accounting for the cumulative translation adjustment upon derecognition of certain subsidiaries or groups of assets within a foreign entity or of an investment in a foreign entity. The guidance is effective prospectively for fiscal years and interim periods within those fiscal years beginning after December 15, 2013, which is the first quarter of fiscal 2015 for the Company. Early adoption is permitted. The Company is currently evaluating the new guidance.
	In July 2013, the FASB issued new accounting guidance on the presentation of unrecognized tax benefits. The new guidance requires an entity to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward, except as follows: to the extent a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date under the tax law of the applicable jurisdiction to settle any additional income taxes that would result from the disallowance of a tax position or the tax law of the applicable jurisdiction does not require the entity to use, and the entity does not intend to use the deferred tax  asset for such purpose, then the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. This guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2013, with early adoption permitted. The Company has historically accounted for its unrecognized tax benefits in accordance with this guidance and as such, adoption of this guidance has no impact on its financial position, cash flows or results of operations.

Net_Income_Loss_Per_Share_Tabl

Net Income (Loss) Per Share (Tables)	12 Months Ended
	Mar. 30, 2014
Earnings Per Share [Abstract]	'
Schedule Of Earnings Per Share Basic And Diluted	'
	The following table sets forth the computation of basic and diluted net income per share:
		Fiscal Year Ended
		March 30,		March 31,		April 1,
	(in thousands, except per share amounts)	2014		2013		2012
	Numerator (basic and diluted):
	Net income from continuing operations	$	111,313	$	2,711	$	37,953
	Denominator:
	Weighted average common shares outstanding, basic	149,480		144,014		143,958
	Dilutive effect of employee stock options and restricted stock units	3,889		1,664		1,890
	Weighted average common shares outstanding, diluted	153,369		145,678		145,848
	Basic net income per share from continuing operations	$	0.74	$	0.02	$	0.26
	Diluted net income per share from continuing operations	$	0.73	$	0.02	$	0.26

Business_Combinations_Tables

Business Combinations (Tables)	12 Months Ended
	Mar. 30, 2014
NXP B.V	'
Business Acquisition	'
Schedule of recognized identified assets acquired and liabilities assumed	'
	The assets acquired and liabilities assumed were recognized in the following manner based on their fair values as of July 19, 2012:
	(in thousands)	Fair Value
	Inventories	$	252
	Property, plant and equipment, net	1,125
	Funded pension assets *	666
	Accrued pension liabilities*	(666		)
	Other long-term liabilities	(435		)
	Intangible assets (other than goodwill)	12,500
	Goodwill	13,720
	Total purchase price	$	27,162
	* See Note 16 for information regarding pension plans adopted.
Amortizable Intangible Assets Acquired	'
	A summary of the allocation of intangible assets (other than goodwill) is as follows:
	(in thousands)	Fair Value
	Existing technologies	$	7,500
	Customer relationships	2,700
	In-process research and development	1,900
	Non-compete agreements	300
	Backlog	100
	Total	$	12,500
Fox Enterprises	'
Business Acquisition	'
Schedule of recognized identified assets acquired and liabilities assumed	'
	The aggregate purchase price was allocated as follows:
	(in thousands)	Fair Value
	Cash	$	1,080
	Accounts receivable	4,053
	Inventories	2,600
	Prepaid expenses and other current assets	363
	Property, plant and equipment, net	656
	Other long-term assets	1,190
	Accounts payable and accrued expenses	(3,765		)
	Other long-term liabilities	(1,516		)
	Long-term deferred tax liability	(4,549		)
	Intangible assets (other than goodwill)	12,300
	Goodwill	16,509
	Total purchase price	$	28,921
Amortizable Intangible Assets Acquired	'
	A summary of the allocation of intangible assets (other than goodwill) is as follows:
	(in thousands)	Fair Value
	Existing technologies	$	7,900
	Customer relationships	2,000
	Trade names and trademarks	1,500
	In-process research and development	900
	Total	$	12,300
Alvand Technologies	'
Business Acquisition	'
Schedule of recognized identified assets acquired and liabilities assumed	'
	The aggregate purchase price was allocated as follows:
	(in thousands)	Fair Value
	Cash	$	147
	Accounts receivable	211
	Prepaid expenses	124
	Property, plant and equipment, net	15
	Accounts payable and other current liabilities	(707		)
	Backlog	1,500
	Non-competition agreements	2,300
	Goodwill	19,712
	Total purchase price	$	23,302

Discontinued_Operations_Tables

Discontinued Operations (Tables)	12 Months Ended
	Mar. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'
Results of discontinued operations	'
	The results of discontinued operations for the fiscal years 2013 and 2012 are as follows (in thousands):
				For the Fiscal Year Ended
				March 31, 2013			April 1, 2012
	Revenues			$	2,429		$	9,620
	Cost of revenue			3,006			11,271
	Operating expenses			4,554			23,240
	Gain on divestiture			886			45,939
	Income tax expense (benefit)			3			(89		)
	Net income (loss) from discontinued operations			$	(4,248	)	$	21,137
Asset Purchase Agreement	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'
Summary of components of the gain on disposal	'
	The following table summarizes the components of the gain (in thousands):
		Amount
	Cash proceeds from sale (including amounts held in escrow)	$	58,744
	Less book value of assets sold and direct costs related to the sale:
	Fixed assets	(434		)
	Goodwill	(8,568		)
	Intangible assets	(1,818		)
	License	(525		)
	Transaction and other costs	(1,460		)
	Gain on divestiture	$	45,939
Synaptics asset purchase agreement	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'
Summary of components of the gain on disposal	'
	The following table summarizes the components of the gain (in thousands):
		Amount
	Cash proceeds from sale	$	5,000
	Less book value of assets sold and direct costs related to the sale:
	Fixed assets	(1,963		)
	Goodwill	(700		)
	Inventories	(1,288		)
	Transaction and other costs	(163		)
	Gain on divestiture	$	886

Other_Divestitures_not_account1

Other Divestitures (not accounted as discontinued operations) (Tables)	12 Months Ended
	Mar. 30, 2014
Assets of Audio Business	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'
Summary of components of the gain on divestiture	'
	The following table summarizes the components of the loss on divestiture (in thousands):
			Amount
	Cash proceeds from sale		$	200
	Maximum contingent consideration		1,000
	Total consideration		$	1,200
	Fair value adjustment to contingent consideration		$	(1,000	)
	Fair value adjustment to transitional services agreement		(300		)
	Fixed assets		(135		)
	Inventories		(3,051		)
	Other assets		(304		)
	Transaction and other costs		(126		)
	Loss on divestiture		$	(3,716	)
PCI Express	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'
Summary of components of the gain on divestiture	'
	The following table summarizes the components of the gain on divestiture (in thousands):
			Amount
	Cash proceeds from sale		$	96,099
	Less book value of assets sold and direct costs related to the sale:
	Fixed assets		(1,312		)
	Inventories		(876		)
	Goodwill allocation		(7,323		)
	Transaction and other costs		(4,239		)
	Gain on divestiture		$	82,349
Smart Meter business	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'
Summary of components of the gain on divestiture	'
	The following table summarizes the components of the gain on divestiture (in thousands):
		Amount
	Cash proceeds from sale	$	10,264
	Less book value of assets sold and direct costs related to the sale:
	Fixed assets	(22		)
	Inventories	(1,299		)
	Transaction and other costs	(957		)
	Gain on divestiture	$	7,986
Wafer Fabrication Facility	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'
Summary of components of the gain on divestiture	'
	The following table summarizes the components of the gain on divestiture (in thousands):
		Amount
	Cash proceeds from sale	$	26,330
	Assets sold:
	Fixed assets, net	(3,131		)
	Other assets	(1,362		)
	Liabilities transferred	476
	Transaction and other costs	(1,657		)
	Gain on divestiture	$	20,656

Fair_Value_Measurement_Tables

Fair Value Measurement (Tables)	12 Months Ended
	Mar. 30, 2014
Fair Value Disclosures [Abstract]	'
Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis	'
	The following table summarizes the Company’s financial assets and liabilities measured at fair value on a recurring basis as of March 30, 2014:
		Fair Value at Reporting Date Using
	(in thousands)	Quoted Prices in			Significant Other		Significant Unobservable Inputs		Total Balance
		Active Markets for			Observable Inputs		(Level 3)
		Identical Assets			(Level 2)
		(Level 1)
	Cash equivalents and short-term investments:
	U.S. government treasuries and agencies securities	$	112,253		$	—	$	—	$	112,253
	Money market funds	53,430			—		—		53,430
	Asset-backed securities	—			22,332		—		22,332
	Corporate bonds	—			199,806		—		199,806
	International government bonds	—			3,014		—		3,014
	Corporate commercial paper	—			6,246		—		6,246
	Bank deposits	—			18,538		—		18,538
	Repurchase agreements	—			46		—		46
	Municipal bonds	—			9,210		—		9,210
	Total assets measured at fair value	$	165,683		$	259,192	$	—	$	424,875
	Liabilities:
	Fair value of contingent consideration	—			—		2,140		2,140
	Total liabilities measured at fair value	$	—		$	—	$	2,140	$	2,140
	The following table summarizes the Company’s financial assets and liabilities measured at fair value on a recurring basis as of March 31, 2013:
		Fair Value at Reporting Date Using
		Quoted Prices in			Significant Other		Significant Unobservable Inputs		Total
		Active Markets for			Observable Inputs		(Level 3)
		Identical Assets			(Level 2)
	(in thousands)	(Level 1)
	Cash equivalents and short-term investments:
	U.S. government treasuries and agencies securities	$	87,379		$	—	$	—	$	87,379
	Money market funds	79,083			—		—		79,083
	Asset-backed securities				9,855				9,855
	Corporate bonds	—			58,716		—		58,716
	International government bonds	—			3,066				3,066
	Bank deposits	—			16,583		—		16,583
	Municipal bonds	—			2,094		—		2,094
	Total assets measured at fair value	$	166,462		$	90,314	$	—	$	256,776
	Liabilities:
	Fair value of contingent consideration	—			—		6,695		6,695
	Total liabilities measured at fair value	$	—		$	—	$	6,695	$	6,695
Change in Fair Value of Liabilities Measured Using Level 3 Inputs	'
	The following table summarizes the change in the fair value of liabilities measured using significant unobservable inputs (Level 3) for fiscal 2014:
	(in thousands)	Estimated Fair Value
	Balance as of March 31, 2013	$	6,695
	Changes of fair value during the year	575
	Payment made during the year	(5,130		)
	Balance as of March 30, 2014	$	2,140

Investments_Tables

Investments (Tables)	12 Months Ended
	Mar. 30, 2014
Investments, Debt and Equity Securities [Abstract]	'
Available-For-Sale Investments	'
	Available-for-sale investments at March 30, 2014 were as follows:
		Cost			Gross			Gross			Estimated Fair
	(in thousands)				Unrealized			Unrealized			Value
					Gains			Losses
	U.S. government treasuries and agencies securities	$	112,268		$	76		$	(91	)	$	112,253
	Money market funds	53,430			—			—			53,430
	Asset-backed securities	22,330			11			(9		)	22,332
	Corporate bonds	199,598			335			(127		)	199,806
	International government bonds	3,023			—			(9		)	3,014
	Corporate commercial paper	6,246			—			—			6,246
	Bank deposits	18,538			—			—			18,538
	Repurchase agreements	46			—			—			46
	Municipal bonds	9,196			32			(18		)	9,210
	Total available-for-sale investments	424,675			454			(254		)	424,875
	Less amounts classified as cash equivalents	(62,271		)	—			—			(62,271		)
	Short-term investments	$	362,404		$	454		$	(254	)	$	362,604
	Available-for-sale investments at March 31, 2013 were as follows:
		Cost			Gross			Gross			Estimated Fair
	(in thousands)				Unrealized			Unrealized			Value
					Gains			Losses
	U.S. government treasuries and agencies securities	$	87,356		$	24		$	(1	)	$	87,379
	Money market funds	79,083			—			—			79,083
	Asset-backed securities	9,860			2			(7		)	9,855
	Corporate bonds	58,733			33			(50		)	58,716
	International government bonds	3,069			1			(4		)	3,066
	Bank deposits	16,583			—			—			16,583
	Municipal bonds	2,089			5			—			2,094
	Total available-for-sale investments	256,773			65			(62		)	256,776
	Less amounts classified as cash equivalents	(90,443		)	—			—			(90,443		)
	Short-term investments	$	166,330		$	65		$	(62	)	$	166,333
Contractual Maturity of Available-For-Sale Debt Securities	'
	The cost and estimated fair value of available-for-sale debt securities at March 30, 2014, by contractual maturity, were as follows:
	(in thousands)	Amortized			Estimated Fair
		Cost			Value
	Due in 1 year or less	$	173,850		$	173,891
	Due in 1-2 years	101,275			101,378
	Due in 2-5 years	149,550			149,606
	Total investments in available-for-sale debt securities	$	424,675		$	424,875
	The cost and estimated fair value of available-for-sale debt securities at March 31, 2013, by contractual maturity, were as follows:
	(in thousands)	Amortized			Estimated Fair
		Cost			Value
	Due in 1 year or less	$	186,747		$	186,771
	Due in 1-2 years	25,053			25,038
	Due in 2-5 years	44,973			44,967
	Total investments in available-for-sale debt securities	$	256,773		$	256,776
Gross Unrealized Losses and Fair Value of Investments in Continuous Loss Position	'
	The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses as of March 30, 2014, aggregated by investment category and length of time that individual securities have been in a continuous loss position.
		Less Than 12 Months						12 Months or Greater						Total
	(in thousands)	Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
		Value			Loss			Value			Loss			Value		Loss
	Corporate bonds	$	52,783		$	(127	)	$	—		$	—		$	52,783	$	(127	)
	Asset-backed securities	11,156			(9		)	—			—			11,156		(9		)
	U.S. government treasuries and agencies securities	36,403			(91		)	—			—			36,403		(91		)
	Municipal bonds	$	4,000		$	(18	)	—			—			4,000		(18		)
	International government bonds	3,014			(9		)	—			—			3,014		(9		)
	Total	$	107,356		$	(254	)	$	—		$	—		$	107,356	$	(254	)
	The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses, as of March 31, 2013, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position.
		Less Than 12 Months						12 Months or Greater						Total
		Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
	(in thousands)	Value			Loss			Value			Loss			Value		Loss
	Corporate bonds	$	32,009		$	(50	)	$	—		$	—		$	32,009	$	(50	)
	Asset-backed securities	6,473			(7		)							6,473		(7		)
	U.S. government treasuries and agencies securities	3,324			(1		)	—			—			3,324		(1		)
	International government bonds	1,007			(4		)	—			—			1,007		(4		)
	Total	$	42,813		$	(62	)	$	—		$	—		$	42,813	$	(62	)

StockBased_Employee_Compensati1

Stock-Based Employee Compensation (Tables)	12 Months Ended
	Mar. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Compensation Expense	'
	The following table summarizes stock-based compensation expense by line items appearing in the Company’s Consolidated Statement of Operations:
		Fiscal Year Ended
	(in thousands)	March 30,				March 31,				April 1,
		2014				2013				2012
	Cost of revenue	$	1,189			$	1,113			$	1,784
	Research and development	5,601				6,692				8,566
	Selling, general and administrative	5,887				5,250				5,983
	Discontinued operations	675				217				400
	Total stock-based compensation expense	$	13,352			$	13,272			$	16,733
Valuation Assumptions	'
	These variables include, but are not limited to, the Company’s expected stock price volatility over the term of the awards, as well as the expected term of the awards.
		Fiscal Year Ended
		March 30,				March 31,				April 1,
		2014				2013				2012
	Stock option plans:
	Expected term	4.60 years				4.64 years				4.31 years
	Risk-free interest rate	0.95		%		0.73		%		1.33		%
	Volatility	40.1		%		45		%		43.5		%
	Dividend yield	—		%		—		%		—		%
	Weighted-average grant-date fair value	$	2.99			$	2.18			$	2.86
	ESPP:
	Expected term	0.25 years				0.25 years				0.25 years
	Risk-free interest rate	0.06		%		0.08		%		0.03		%
	Volatility	35.5		%		35		%		47.7		%
	Dividend yield	—		%		—		%		—		%
	Weighted-average grant-date fair value	$	1.89			$	1.42			$	1.53
Stock Option activities	'
	The following is a summary of the Company's stock option activity and related weighted average exercise prices for each category:
		Fiscal 2014
	(shares in thousands)	Shares			Price
	Beginning stock options outstanding	12,817			$	7.12
	Granted	1,946			8.67
	Exercised (1)	(5,766	)		6.48
	Canceled	(3,395	)		8.95
	Ending stock options outstanding	5,602			$	7.21
	Ending stock options exercisable	3,210			$	6.99
	-1	Upon exercise, the Company issues new shares of common stock.
Summary of information about stock options outstanding	'
	The following is a summary of information about stock options outstanding at March 30, 2014:
			Options Outstanding						Options Exercisable
	Range of Exercise Prices		Number Outstanding (in thousands)		Weighted-Average		Weighted-Average		Number Exercisable (in thousands)		Weighted-Average
					Remaining Contractual Life		Exercise Price				Exercise Price
					(in years)
	4.84 - 5.33		653		3.5		$5.18		449		$5.13
	5.40-5.75		654		3.58		5.71		542		5.72
	5.77 - 5.77		969		5.1		5.77		348		5.77
	5.79-6.00		752		2.08		5.93		707		5.93
	6.04-7.24		358		3.93		6.75		233		6.69
	7.67-7.67		626		6.13		7.67		—		—
	7.81-8.22		106		2.47		8.02		87		8.06
	8.49-8.49		809		4.06		8.49		518		8.49
	8.69-12.51		583		4.84		11.82		233		11.86
	14.15-16.26		92		0.13		15.01		93		15.01
			5,602		4.06		$7.21		3,210		$6.99
Schedule of Nonvested Restricted Stock Units Activity	'
	The following table summarizes the Company’s restricted stock unit activity and related weighted-average exercise prices for each category:
		Fiscal 2014
	(shares in thousands)	Shares			Weighted-
					Average
					Grant Date
					Fair Value
					Per Share
	Beginning RSUs outstanding	2,591			$	6.26
	Granted	2,123			8.17
	Released	(901	)		6.26
	Forfeited	(889	)		6.98
	Ending RSUs outstanding	2,924			$	7.43
Schedule of Nonvested Performance-based Units Activity	'
	The following table summarizes the Company’s performance stock unit activity and related weighted-average exercise prices for each category:
		Fiscal 2014
	(shares in thousands)	Shares			Weighted-
					Average
					Grant Date
					Fair Value
					Per Share
	Beginning PSUs outstanding	744			$	7.5
	Granted	491			8.46
	Released	—			—
	Forfeited	(431	)		8.04
	Ending PSUs outstanding	804			$	7.79
Summary of ESPP Activity	'
	Activity under the Company’s ESPP is summarized in the following table:
	(in thousands, except per share amounts)	Fiscal 2014				Fiscal 2013				Fiscal 2012
	Number of shares issued	1,206				1,679				2,351
	Average issuance price	$	7.23			$	5.13			$	4.83
	Number of shares available at year-end	5,019				1,226				2,905

Balance_Sheet_Detail_Tables

Balance Sheet Detail (Tables)	12 Months Ended
	Mar. 30, 2014
Balance Sheet Related Disclosures [Abstract]	'
Balance Sheet Detail	'
	Balance Sheet Detail
	(in thousands)	March 30,			March 31,
		2014			2013
	Inventories, net
	Raw materials	$	7,745		$	7,008
	Work-in-process	18,436			24,123
	Finished goods	23,441			25,424
	Total inventories, net	$	49,622		$	56,555
	Property, plant and equipment, net
	Land	$	11,724		$	11,832
	Machinery and equipment	289,393			296,174
	Building and leasehold improvements	48,558			48,991
	Total property, plant and equipment, gross	349,675			356,997
	Less: accumulated depreciation *	(279,848		)	(282,009		)
	Total property, plant and equipment, net **	$	69,827		$	74,988
	Other current liabilities
	Short-term portion of supplier obligations ***	$	762		$	407
	Other ****	10,763			14,245
	Total other current liabilities	$	11,525		$	14,652
	Other long-term obligations
	Deferred compensation related liabilities	$	13,786		$	14,615
	Other	4,897			7,407
	Total other long-term liabilities	$	18,683		$	22,022
	* Depreciation expense was $20.9 million, $20.1 million and $18.8 million for fiscal 2014, fiscal 2013 and fiscal 2012, respectively.
	** The Company envisions fully divesting its HSC business and has classified these assets as held for sale. As of March 30, 2014, the HSC business had of $2.9 million in fixed assets classified as held for sale.
	*** Supplier obligations represent payments due under various software design tool and technology license agreements.
	**** Other current liabilities consist primarily of acquisition related accrued contingent liabilities, accrued royalties and outside commissions, accrued severance costs and other accrued unbilled expenses.

Deferred_Income_on_Shipments_t1

Deferred Income on Shipments to Distributors (Tables)	12 Months Ended
	Mar. 30, 2014
Deferred Revenue Disclosure [Abstract]	'
Deferred Income on Shipments to Distributors	'
	The components of deferred income on shipments to distributors as of March 30, 2014 and March 31, 2013 were as follows:
		Fiscal Year Ended
	(in thousands)	March 30,			March 31,
		2014			2013
	Gross deferred revenue	$	17,261		$	17,581
	Gross deferred costs	(3,255		)	(3,042		)
	Deferred income on shipments to distributors	$	14,006		$	14,539

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Tables)	12 Months Ended
	Mar. 30, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]	'
Schedule of Accumulated Other Comprehensive Income	'
	Changes in the balance of accumulated other comprehensive income, net of taxes, by component consisted of the following:
	(in thousands)	Cumulative translation adjustments				Unrealized gain on available-for-sale investments			Pension adjustments			Total
	Balance, March 31, 2013	$	1,563			$	—		$	(77	)	$	1,486
	Other comprehensive income (loss) before reclassifications	(66		)		291			1			226
	Amounts reclassified out of AOCI	—				(97		)	(6		)	(103		)
	Net current-period other comprehensive income (loss)	(66		)		194			(5		)	123
	Balance as of March 30, 2014	$	1,497			$	194		$	(82	)	$	1,609
	Comprehensive income components consisted of:
	(in thousands)		March 30,				Location
			2014
	Unrealized holding gains (losses) on available-for-sale investments		$	(97	)		interest and other, net
	Amortization of pension benefits prior service credits		(6		)		operating expense
	Total amounts reclassified out of accumulated other comprehensive income (loss)		$	(103	)

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets, Net (Tables)	12 Months Ended
	Mar. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Changes in the carrying amounts of goodwill by segment	'
	Goodwill activity for fiscal 2014 and fiscal 2013 was follows:
		Reportable Segment
		Communications			Computing and Consumer			Total
	(in thousands)
	Balance as of April 1, 2012	$	74,673		$	21,419		$	96,092
	Dispositions	—			(700		)	(700		)
	Additions	49,532			—			49,532
	Balance as of March 31, 2013	124,205			20,719			144,924
	Impairment losses	(2,161		)	—			(2,161		)
	Dispositions	—			(7,323		)	(7,323		)
	Additions	204			—			204
	Balance as of March 30, 2014	$	122,248		$	13,396		$	135,644
Summary of intangible assets balances	'
	Intangible asset balances as of March 30, 2014 and March 31, 2013 are summarized as follows:
		March 30, 2014
	(in thousands)	Gross Assets			Accumulated			Net Assets (1)
					Amortization
	Purchased intangible assets:
	Existing technology	$	217,923		$	(203,888	)	$	14,035
	Trademarks	4,411			(2,934		)	1,477
	Customer relationships	131,093			(128,681		)	2,412
	Non-compete agreements	2,275			(1,458		)	817
	Total purchased intangible assets	$	355,702		$	(336,961	)	$	18,741
	(1) Includes $6.6 million in HSC assets held for sale.
		March 31, 2013
	(in thousands)	Gross Assets			Accumulated			Net Assets
					Amortization
	Purchased intangible assets:
	Existing technology	$	241,197		$	(203,129	)	$	38,068
	Trademarks	4,411			(2,018		)	2,393
	Customer relationships	131,931			(128,107		)	$	3,824
	Backlog	1,600			(1,509		)	91
	Non-compete agreements	2,600			(807		)	1,793
	Total amortizable purchased intangible assets	381,739			(335,570		)	46,169
	IPR&D *	2,433			—			2,433
	Total purchased intangible assets	$	384,172		$	(335,570	)	$	48,602
	* IPR&D is initially capitalized at fair value as an intangible asset with an indefinite life and assessed for impairment thereafter. When the IPR&D project is complete, it is reclassified as an amortizable purchased intangible asset and is amortized over its estimated useful life. If an IPR&D project is abandoned, the Company will record a charge for the carrying value of the related intangible asset to its Consolidated Statements of Operations in the period it is abandoned.
Summary of amortization expense for purchased intangible assets	'
	Amortization expense for identified intangibles is summarized below:
		Fiscal Year Ended
	(in thousands)	March 30, 2014			March 31, 2013			April 1, 2012
	Existing technology	$	19,730		$	14,131		$	12,527
	Trademarks	3,405			874			452
	Customer relationships	916			3,225			3,510
	Backlog	91			1,509			—
	Non-compete agreements	651			807			—
	Total	$	24,793		$	20,546		$	16,489
	The intangible assets are being amortized over estimated useful lives of six months to seven years.
Estimated remaining future amortization expense	'
	Based on the intangible assets recorded at March 30, 2014, excluding held for sale intangible assets which are no longer amortized, and assuming no subsequent additions to or impairment of the underlying assets, the remaining estimated amortization expense is expected to be as follows (in thousands):
	Fiscal Year	Amount
	2015	$	6,572
	2016	3,083
	2017	2,185
	2018	256
	2019 and thereafter	10
	Total	$	12,106

Restructuring_Tables

Restructuring (Tables)	12 Months Ended
	Mar. 30, 2014
Restructuring and Related Activities [Abstract]	'
Provision of Restructuring Charges and Liability Remaining	'
	The following table shows the provision of the restructuring charges and the liability remaining as of March 30, 2014:
	(in thousands)	Cost of Revenues			Operating Expenses			Total
	Balance as of April 3, 2011	$	9,187		$	815		$	10,002
	Provision	(1,425		)	4,515			3,090
	Cash payments	(6,156		)	(1,738		)	(7,894		)
	Balance as of April 1, 2012	1,606			3,592			5,198
	Provision	557			5,277			5,834
	Cash payments	(2,137		)	(7,233		)	(9,370		)
	Balance as of March 31, 2013	26			1,636			1,662
	Provision	—			5,538			5,538
	Cash payments	(26		)	(6,536		)	(6,562		)
	Balance as of March 30, 2014	$	—		$	638		$	638

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Mar. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Schedule of Future Minimum Rental Payments for Operating Leases	'
	As of March 30, 2014, aggregate future minimum commitments for the next five fiscal years and thereafter under all operating leases, excluding leases in which amounts have been accrued for impairment charges, were as follows (in thousands):
	Fiscal Year	Amount
	2015	$	3,926
	2016	3,691
	2017	2,995
	2018	2,804
	2019 and thereafter	3,790
	Total	$	17,206

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Mar. 30, 2014
Income Tax Disclosure [Abstract]	'
Components of Income (Loss) before Income Taxes and Income Tax Expense (Benefit)	'
	The components of income (loss) before income taxes and the income tax expense (benefit) were as follows:
		Fiscal Year Ended
	(in thousands)	March 30, 2014			March 31, 2013			April 1, 2012
	Income (loss) before income taxes:
	United States	$	9,491		$	(21,206	)	$	(6,126	)
	Foreign	79,865			(970		)	64,765
	Income (loss) before income taxes	$	89,356		$	(22,176	)	$	58,639
	Income tax expense (benefit):
	Current:
	United States	$	(118	)	$	(49	)	$	(321	)
	State	35			128			(118		)
	Foreign	878			1,417			545
		795			1,496			106
	Deferred:
	United States	240			(3,159		)	33
	State	14			(341		)	1
	Foreign	(57		)	—			39
		197			(3,500		)	73
	Income tax expense (benefit)	$	992		$	(2,004	)	$	179
Significant Components of Deferred Tax Assets and Liabilities	'
	Significant components of deferred tax assets and liabilities were as follows:
	(in thousands)	March 30, 2014			March 31, 2013
	Deferred tax assets:
	Deferred income on shipments to distributors	$	2,666		$	2,576
	Non-deductible accruals and reserves	10,233			9,778
	Inventory related and other expenses	1,761			1,427
	Net operating losses and credit carryforwards	114,858			97,337
	Depreciation and amortization	13,725			24,864
	Stock options	1,713			4,193
	Other	315			369
	Total deferred tax assets	145,271			140,544
	Deferred tax liabilities:
	Purchased intangibles	(558		)	(4,158		)
	U.S. tax on earnings of foreign subsidiaries not indefinitely reinvested	—			—
	Other	(3,087		)	(3,633		)
	Total deferred tax liabilities	(3,645		)	(7,791		)
	Valuation allowance	(143,704		)	(134,633		)
	Net deferred tax liabilities	$	(2,078	)	$	(1,880	)
Reconciliation between Statutory and Effective Income Tax Rates	'
	Reconciliation between the statutory U.S. income tax rate of 35% and the effective rate is as follows:
		Fiscal Year Ended
	(in thousands)	March 30,			March 31,			April 1,
		2014			2013			2012
	Provision (benefit) at 35% U.S. statutory rate	$	31,275		$	(7,761	)	$	20,756
	State tax, net of federal benefit	32			(119		)	85
	Effect of foreign operations	(24,878		)	2,097			(22,059		)
	Repatriation of foreign earnings	5,623			1,505			1,048
	Net operating losses and tax credits (benefited) not benefited	(11,285		)	(2,640		)	(1,201		)
	Stock-based compensation	(689		)	2,640			4,198
	Liquidation of U.S. subsidiary	—			—			(1,218		)
	Other	914			2,274			(1,430		)
	Income tax expense (benefit)	$	992		$	(2,004	)	$	179
Unrecognized Tax Benefits Activity	'
	The following tables summarize the activities of gross unrecognized tax benefits:
		Fiscal Year Ended
		March 30, 2014			March 31, 2013			April 1, 2012
	(in thousands)
	Beginning balance	$	31,066		$	29,718		$	28,471
	Increases related to prior year tax positions	90			532			443
	Decreases related to prior year tax positions	(301		)	(296		)	—
	Increases related to current year tax positions	1,498			1,427			937
	Decreases related to the lapsing of statute of limitations	(116		)	(315		)	(133		)
	Ending balance	$	32,237		$	31,066		$	29,718

Segment_Information_Tables

Segment Information (Tables)	12 Months Ended
	Mar. 30, 2014
Segment Reporting [Abstract]	'
Schedule of Reportable Segments Information	'
	The tables below provide information about these segments:
	Revenues by segment	Fiscal Year Ended
	(in thousands)	March 30,			March 31,			April 1,
		2014			2013			2012
	Communications	$	292,435		$	258,184		$	248,370
	Computing and Consumer	192,344			226,268			278,326
	Total revenues	$	484,779		$	484,452		$	526,696
	Sales through a distributor, Avnet, represented approximately 12%, 10% and 11% of the Company’s revenues in fiscal 2014, 2013 and 2012, respectively. Sales through another distributor, Maxtek and its affiliates, represented approximately 13% and 15% of the Company’s revenues in fiscal 2013 and 2012, respectively, and sales through another distributor, Uniquest, represented approximately 10%, of the Company's revenues in fiscal 2013 and 2012. Each of these distributors serve customers within both of the Company's reportable segments.
	Income (Loss) by segment from continuing operations	Fiscal Year Ended
		March 30,			March 31,			April 1,
	(in thousands)	2014			2013			2012
	Communications	$	103,457		$	78,995		$	82,178
	Computing and Consumer	(22,658		)	(30,972		)	(21,247		)
	Unallocated expenses:
	Amortization of intangible assets	(21,964		)	(16,339		)	(16,355		)
	Inventory fair market value adjustment	—			(358		)	—
	Impairment of acquired in-process R&D	(2,433		)	—			—
	Gain on divestitures	78,632			7,986			20,656
	Fabrication production transfer costs	—			—			(4,572		)
	Asset impairments and other	(4,113		)	(6,096		)	315
	Amortization of stock-based compensation	(12,677		)	(13,054		)	(16,333		)
	Severance, retention and facility closure costs	(6,590		)	(5,584		)	(2,151		)
	Acquisition-related costs and other	(802		)	(11,238		)	(168		)
	Consulting expenses related to stockholder activities	—			(1,614		)	—
	Deferred compensation plan expense (benefit)	51			(194		)	(74		)
	Life insurance proceeds received	—			2,313			—
	Other-than-temporary loss on investments	—			(1,708		)	(2,797		)
	Interest income and other, net	1,391			(1,546		)	(1,231		)
	Income from continuing operations, before income taxes	$	112,294		$	591		$	38,221
Revenues from Unaffiliated Customers by Shipment Location	'
	Revenues from unaffiliated customers by geographic area, based on the customers' shipment locations, were as follows:
		Fiscal Year Ended
	(in thousands)	March 30,			March 31,			April 1,
		2014			2013			2012
	APAC	$	309,121		$	308,409		$	350,105
	Americas (1)	71,305			76,876			76,711
	Japan	40,829			40,281			41,586
	Europe	63,524			58,886			58,294
	Total revenues	$	484,779		$	484,452		$	526,696
	-1	Revenues from the customers in the U.S. were $63.1 million, $69.6 million and $70.4 million in fiscal 2014, 2013 and 2012, respectively.
Property, Plant and Equipment by Geographic Region	'
	The Company's net property, plant and equipment are summarized below by geographic area:
		March 30,			March 31,
	(in thousands)	2014			2013
	United States	$	40,561		$	44,651
	Canada	4,660			5,188
	Malaysia	20,972			21,379
	All other countries	3,634			3,770
	Total property, plant and equipment, net	$	69,827		$	74,988

SUPPLEMENTARY_FINANCIAL_INFORM1

SUPPLEMENTARY FINANCIAL INFORMATION (UNAUDITED) (Tables)	12 Months Ended
	Mar. 30, 2014
Quarterly Financial Information Disclosure [Abstract]	'
Schedule of Quarterly Financial Information	'
	QUARTERLY RESULTS OF OPERATIONS
	(in thousands, except per share data)
		Fiscal Year Ended March 30, 2014
		First			Second			Third			Fourth
		Quarter			Quarter (1)			Quarter (2)			Quarter (3)
	Revenues	$	117,464		$	124,047		$	124,628		$	118,640
	Gross profit	66,122			70,761			74,939			61,080
	Net income from continuing operations	1,501			87,411			17,339			5,062
	Net loss from discontinued operations	(3,765		)	(3,760		)	(10,391		)	(5,033		)
	Net income (loss)	(2,264		)	83,651			6,948			29
	Basic net income per share – continuing operations	$	0.01		$	0.58		$	0.11		$	0.03
	Basic net loss per share – discontinued operations	$	(0.03	)	$	(0.02	)	$	(0.06	)	$	(0.03	)
	Basic net income (loss) per share	$	(0.02	)	$	0.56		$	0.05		$	—
	Diluted net income per share – continuing operations	$	0.01		$	0.57		$	0.11		$	0.03
	Diluted net loss per share – discontinued operations	$	(0.03	)	$	(0.03	)	$	(0.07	)	$	(0.03	)
	Diluted net income (loss) per share	$	(0.02	)	$	0.54		$	0.04		$	—
		Fiscal Year Ended March 31, 2013
		First			Second			Third			Fourth
		Quarter			Quarter			Quarter			Quarter (4)
	Revenues	$	129,955		$	132,441		$	114,277		$	107,779
	Gross profit	72,668			74,459			63,074			59,523
	Net income (loss) from continuing operations	3,630			4,656			(106		)	(5,469		)
	Net loss from discontinued operations	(7,945		)	(4,729		)	(5,051		)	(5,158		)
	Net loss	(4,315		)	(73		)	(5,157		)	(10,627		)
	Basic net income loss per share – continuing operations	$	0.03		$	0.03		$	—		$	(0.04	)
	Basic net loss per share – discontinued operations	$	(0.06	)	$	(0.03	)	$	(0.04	)	$	(0.03	)
	Basic net loss per share	$	(0.03	)	$	—		$	(0.04	)	$	(0.07	)
	Diluted net income (loss) per share – continuing operations	$	0.03		$	0.03		$	—		$	(0.04	)
	Diluted net loss per share – discontinued operations	$	(0.06	)	$	(0.03	)	$	(0.04	)	$	(0.03	)
	Diluted net loss per share	$	(0.03	)	$	—		$	(0.04	)	$	(0.07	)
	(1) In the second quarter of fiscal 2014, the Company recorded a gain of $82.3 million in net income from continuing operations related to the divestiture of its PCI Express enterprise flash controller business to PMC-Sierra, Inc.
	(2) In the third quarter of fiscal 2014, the Company recorded a loss of $3.4 million in net loss from continuing operations related to the divestiture of certain assets of its Audio business to Stravelis, Inc.
	(3) In the fourth quarter of fiscal 2014, associated with the decision to discontinue production and sale of products using technology attained through the acquisitions of Mobius Microsystems in fiscal 2010 and IKOR in fiscal 2011, the Company recorded an additional $8.7 million in accelerated amortization of intangible assets which was charged to cost of revenues. In addition, the Company recorded a $2.4 million impairment of IPR&D to research and development expense, associated with the decision to discontinue further development required to complete the Mobius Microsystems acquired IPR&D.
	(4) In the fourth quarter of fiscal 2013, the Company recorded a gain of $8.0 million in net income from continuing operations related to the divestiture of its smart meter business.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Details)	12 Months Ended
	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Concentration Risk [Line Items]	'	'	'
Minimum number of weeks in the fiscal year reporting calendar	'P52W	'	'
Maximum number of weeks in the fiscal year reporting calendar	'P53W	'	'
Number of weeks in fiscal period	'P52W	'P52W	'
Number of revenue channels (channels)	3	'	'
Standard warranty period	'1 year	'	'
Extended warranty period	'2 years	'	'
Maximum	'	'	'
Concentration Risk [Line Items]	'	'	'
Maturity period of cash and cash equivalents	'3 months	'	'
Customer Concentration Risk | Accounts Receivable	'	'	'
Concentration Risk [Line Items]	'	'	'
Number of significant distributors (distributors)	2	4	'
Avnet | Customer Concentration Risk | Sales Revenue, Goods, Net	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration risk (percentage)	12.00%	10.00%	11.00%
Maxtek | Customer Concentration Risk | Sales Revenue, Goods, Net	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration risk (percentage)	'	13.00%	15.00%
Uniquest | Customer Concentration Risk | Sales Revenue, Goods, Net	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration risk (percentage)	'	10.00%	10.00%
Significant Distributor 1 | Customer Concentration Risk | Accounts Receivable	'	'	'
Concentration Risk [Line Items]	'	'	'
Customer concentration risk (percent)	15.00%	15.00%	'
Significant Distributor 2 | Customer Concentration Risk | Accounts Receivable	'	'	'
Concentration Risk [Line Items]	'	'	'
Customer concentration risk (percent)	14.00%	15.00%	'
Significant Distributor 3 | Customer Concentration Risk | Accounts Receivable	'	'	'
Concentration Risk [Line Items]	'	'	'
Customer concentration risk (percent)	'	12.00%	'
Significant Distributor 4 | Customer Concentration Risk | Accounts Receivable	'	'	'
Concentration Risk [Line Items]	'	'	'
Customer concentration risk (percent)	'	11.00%	'

Summary_of_Significant_Account3

Summary of Significant Accounting Policies (Details 2)	12 Months Ended
	Mar. 30, 2014
Minimum | Machinery and Equipment	'
Property, Plant and Equipment [Line Items]	'
Useful life	'3 years
Minimum | Building and Building Improvements	'
Property, Plant and Equipment [Line Items]	'
Useful life	'10 years
Maximum | Machinery and Equipment	'
Property, Plant and Equipment [Line Items]	'
Useful life	'5 years
Maximum | Building and Building Improvements	'
Property, Plant and Equipment [Line Items]	'
Useful life	'30 years

Net_Income_Loss_Per_Share_Deta

Net Income (Loss) Per Share (Details) (USD $)

3 Months Ended

12 Months Ended

In Thousands, except 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

Numerator (basic and diluted):

'

'

'

'

'

'

'

'

'

'

'

Net income from continuing operations

$5,062

[1]

$17,339

[2]

$87,411

[3]

$1,501

($5,469)

[4]

($106)

$4,656

$3,630

$111,313

$2,711

$37,953

Denominator:

'

'

'

'

'

'

'

'

'

'

'

Weighted average common shares outstanding, basic (in shares)

'

'

'

'

'

'

'

'

149,480,000

144,014,000

143,958,000

Dilutive effect of employee stock options and restricted stock units (in shares)

'

'

'

'

'

'

'

'

3,889,000

1,664,000

1,890,000

Weighted average common shares outstanding, diluted (in shares)

'

'

'

'

'

'

'

'

153,369,000

145,678,000

145,848,000

Basic net income per share - continuing operations (in dollars per share)

$0.03

[1]

$0.11

[2]

$0.58

[3]

$0.01

($0.04)

[4]

$0

$0.03

$0.03

$0.74

$0.02

$0.26

Diluted net income per share - continuing operations (in dollars per share)

$0.03

[1]

$0.11

[2]

$0.57

[3]

$0.01

($0.04)

[4]

$0

$0.03

$0.03

$0.73

$0.02

$0.26

Shares excluded from calculation because they were anti-dilutive (in shares)

'

'

'

'

'

'

'

'

1,500,000

12,000,000

11,100,000

[1]

In the fourth quarter of fiscal 2014, associated with the decision to discontinue production and sale of products using technology attained through the acquisitions of Mobius Microsystems in fiscal 2010 and IKOR in fiscal 2011, the Company recorded an additional $8.7 million in accelerated amortization of intangible assets which was charged to cost of revenues. In addition, the Company recorded a $2.4 million impairment of IPR&D to research and development expense, associated with the decision to discontinue further development required to complete the Mobius Microsystems acquired IPR&D.

[2]

In the third quarter of fiscal 2014, the Company recorded a loss of $3.4 million in net loss from continuing operations related to the divestiture of certain assets of its Audio business to Stravelis, Inc.

[3]

In the second quarter of fiscal 2014, the Company recorded a gain of $82.3 million in net income from continuing operations related to the divestiture of its PCI Express enterprise flash controller business to PMC-Sierra, Inc.

[4]

In the fourth quarter of fiscal 2013, the Company recorded a gain of $8.0 million in net income from continuing operations related to the divestiture of its smart meter business.

Business_CombinationsText_Deta

Business Combinations-Text (Details) (USD $)

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

Apr. 16, 2012

Mar. 30, 2014

Mar. 31, 2013

Apr. 01, 2012

Mar. 31, 2013

Dec. 19, 2012

Jul. 19, 2012

Mar. 31, 2013

Apr. 30, 2012

Mar. 31, 2013

Apr. 16, 2012

Mar. 30, 2014

Mar. 31, 2013

Jul. 19, 2012

Apr. 30, 2012

Jul. 19, 2012

Apr. 30, 2012

Jul. 19, 2012

Apr. 30, 2012

Apr. 30, 2012

Jul. 19, 2012

Apr. 30, 2012

Apr. 30, 2012

Apr. 30, 2012

Apr. 30, 2012

PLX Technology

PLX Technology

NXP B.V

NXP B.V

Fox Enterprises

Fox Enterprises

Alvand Technologies

Alvand Technologies

Alvand Technologies

Existing Technology

Existing Technology

IPR&D

IPR&D

Backlog

Backlog

Non-compete agreements

Customer relationships

Customer relationships

Trade Names

Minimum

Maximum

NXP B.V

Fox Enterprises

NXP B.V

Fox Enterprises

NXP B.V

Alvand Technologies

Alvand Technologies

NXP B.V

Fox Enterprises

Fox Enterprises

Customer relationships

Customer relationships

Fox Enterprises

Fox Enterprises

Business Acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred stock, par value (in dollars per share)

'

$0.00

$0.00

'

'

$0.00

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Acquisition-related costs incurred

'

'

'

'

$10,700,000

'

'

$3,900,000

'

$200,000

'

'

$100,000

'

'

'

'

'

'

'

'

'

'

'

'

Consideration Transferred

'

'

'

'

'

'

31,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accrued liabilities

'

'

'

'

'

'

4,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total purchase price

'

'

'

'

'

'

27,162,000

'

28,921,000

'

23,302,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization discount factor (percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

26.00%

15.00%

31.00%

21.00%

18.70%

15.00%

22.00%

28.70%

'

20.00%

15.00%

20.00%

Amortization period for acquired intangible assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'

'1 year

'

'

'4 years

'3 years

'

'

Payments to acquire businesses

'

0

68,341,000

1,957,000

'

'

'

'

25,700,000

'

20,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contingent consideration liability

'

'

'

'

'

'

'

'

3,200,000

'

2,800,000

2,100,000

3,300,000

'

'

'

'

'

'

'

'

'

'

'

'

Contingent consideration liability, high end of range

'

'

'

'

'

'

'

'

4,000,000

'

4,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contingent consideration period after acquisition date

'3 years

'

'

'

'

'

'

'

'1 year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payment of Acquisition Related Contingent Consideration

'

5,130,000

0

0

'

'

'

'

3,300,000

'

'

1,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Change in amount of contingent consideration liability

'

'

'

'

'

'

'

'

'

'

'

$600,000

$500,000

'

'

'

'

'

'

'

'

'

'

'

'

Business_CombinationsAssets_Ac

Business Combinations-Assets Acquired and Liabilities Assumed (Details) (USD $)	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012	Apr. 30, 2012	Jul. 19, 2012		Apr. 16, 2012	Apr. 16, 2012	Apr. 16, 2012
In Thousands, unless otherwise specified				Fox Enterprises	NXP B.V		Alvand Technologies	Backlog	Non-competition agreements
								Alvand Technologies	Alvand Technologies
Business Acquisition	'	'	'	'	'		'	'	'
Cash	'	'	'	$1,080	'		$147	'	'
Accounts receivable	'	'	'	4,053	'		211	'	'
Inventories	'	'	'	2,600	252		'	'	'
Prepaid expenses and other current assets	'	'	'	363	'		124	'	'
Property, plant and equipment, net	'	'	'	656	1,125		15	'	'
Funded pension assets	'	'	'	'	666	[1]	'	'	'
Other long-term assets	'	'	'	1,190	'		'	'	'
Accounts payable and accrued expenses	'	'	'	-3,765	'		-707	'	'
Finite-lived intangibles	'	'	'	12,300	12,500		'	1,500	2,300
Other long-term liabilities	'	'	'	-1,516	'		'	'	'
Long-term deferred tax liability	'	'	'	-4,549	'		'	'	'
Accrued pension liabilities	'	'	'	'	-666	[1]	'	'	'
Other long-term liabilities	'	'	'	'	-435		'	'	'
Intangible assets (other than goodwill)	'	'	'	12,300	12,500		'	'	'
Goodwill	135,644	144,924	96,092	16,509	13,720		19,712	'	'
Total purchase price	'	'	'	$28,921	$27,162		$23,302	'	'
[1]	See Note 16 for information regarding pension plans adopted.

Business_CombinationsIntangibl

Business Combinations-Intangible Assets (Details) (USD $)	Jul. 19, 2012	Apr. 30, 2012
In Thousands, unless otherwise specified	NXP B.V	Fox Enterprises
Business Combinations [Abstract]	'	'
Total purchase price	$27,162	$28,921
Finite-Lived Intangible Assets, Gross [Abstract]	'	'
Existing technologies	7,500	7,900
Customer relationships	2,700	2,000
Trade names and trademarks	'	1,500
In-process research and development	1,900	900
Non-compete agreements	300	'
Backlog	100	'
Total	$12,500	$12,300

Discontinued_Operations_Detail

Discontinued Operations (Details) (USD $)

3 Months Ended

12 Months Ended

0 Months Ended

0 Months Ended

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

Mar. 30, 2014

Mar. 31, 2013

Apr. 01, 2012

Aug. 03, 2012

Aug. 01, 2012

Sep. 26, 2011

Oct. 02, 2011

Mar. 31, 2013

Apr. 01, 2012

High-Speed Converter Business

High-Speed Converter Business

High-Speed Converter Business

Synaptics asset purchase agreement

Synaptics asset purchase agreement

Asset Purchase Agreement

Asset Purchase Agreement

Video Business

Video Business

Employees

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intention to Fully Divest Assets Held for Sale, Period

'

'

'

'

'

'

'

'

'

'

'

'12 months

'

'

'

'

'

'

'

'

Assets Held-for-sale assets

'

'

'

'

'

'

'

'

'

'

'

$9,500,000

'

'

'

'

'

'

'

'

Assets Held-for-sale intangible assets

'

'

'

'

'

'

'

'

'

'

'

6,600,000

'

'

'

'

'

'

'

'

Holding period for escrow deposit

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'2 years

'

'

'

Cash held in escrow account related to disposal

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,000,000

'

'

'

Cash proceeds from sale (including amounts held in escrow)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,000,000

'

58,744,000

'

'

'

Employees transferred to synaptics (employees)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

47

'

'

'

'

Less book value of assets sold and direct costs related to the sale:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fixed assets

-2,900,000

'

'

'

'

'

'

'

-2,900,000

'

'

-2,900,000

'

'

'

-1,963,000

-434,000

'

'

'

Goodwill

'

'

'

'

'

'

'

'

-7,323,000

-700,000

'

'

'

'

-700,000

'

'

-8,568,000

'

'

Inventories

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-1,288,000

'

'

'

'

Intangible assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-1,818,000

'

'

License

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-525,000

'

'

Transaction and other costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-163,000

'

'

-1,460,000

'

'

Gain on divestiture

'

'

'

'

'

'

'

'

'

'

'

'

'

'

886,000

'

45,900,000

45,939,000

'

'

Results of discontinued operations [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

'

'

'

3,466,000

2,784,000

0

'

'

'

'

2,429,000

9,620,000

Cost of revenue

'

'

'

'

'

'

'

'

'

'

'

2,935,000

2,908,000

0

'

'

'

'

3,006,000

11,271,000

Goodwill and long-lived assets impairment

'

'

'

'

'

'

'

'

'

'

'

4,797,000

0

0

'

'

'

'

'

'

Operating expenses

'

'

'

'

'

'

'

'

'

'

'

18,622,000

18,398,000

630,000

'

'

'

'

4,554,000

23,240,000

Other income (expenses)

'

'

'

'

'

'

'

'

'

'

'

-50,000

0

0

'

'

'

'

'

'

Gain on divestiture

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

886,000

45,939,000

Income tax expense

'

'

'

'

'

'

'

'

'

'

'

11,000

113,000

0

'

'

'

'

3,000

-89,000

Net income (loss) from discontinued operations

($5,033,000)

[1]

($10,391,000)

[2]

($3,760,000)

[3]

($3,765,000)

($5,158,000)

[4]

($5,051,000)

($4,729,000)

($7,945,000)

($22,949,000)

($22,883,000)

$20,507,000

($22,949,000)

($18,635,000)

($630,000)

'

'

'

'

($4,248,000)

$21,137,000

[1]

In the fourth quarter of fiscal 2014, associated with the decision to discontinue production and sale of products using technology attained through the acquisitions of Mobius Microsystems in fiscal 2010 and IKOR in fiscal 2011, the Company recorded an additional $8.7 million in accelerated amortization of intangible assets which was charged to cost of revenues. In addition, the Company recorded a $2.4 million impairment of IPR&D to research and development expense, associated with the decision to discontinue further development required to complete the Mobius Microsystems acquired IPR&D.

[2]

In the third quarter of fiscal 2014, the Company recorded a loss of $3.4 million in net loss from continuing operations related to the divestiture of certain assets of its Audio business to Stravelis, Inc.

[3]

In the second quarter of fiscal 2014, the Company recorded a gain of $82.3 million in net income from continuing operations related to the divestiture of its PCI Express enterprise flash controller business to PMC-Sierra, Inc.

[4]

In the fourth quarter of fiscal 2013, the Company recorded a gain of $8.0 million in net income from continuing operations related to the divestiture of its smart meter business.

Other_Divestitures_not_account2

Other Divestitures (not accounted as discontinued operations) (Details) (USD $)	0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended	1 Months Ended
	Dec. 13, 2013	Dec. 29, 2013	Jul. 12, 2013	Sep. 29, 2013	Mar. 07, 2013	Mar. 31, 2013	Jan. 31, 2012
	Assets of Audio Business	Assets of Audio Business	PCI Express	PCI Express	Smart Meter business	Smart Meter business	Wafer Fabrication Facility
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'	'	'	'
Cash proceeds from sale (including amounts held in escrow)	$200,000	'	'	'	$10,264,000	'	$26,330,000
Maximum contingent consideration	1,000,000	'	'	'	'	'	'
Total consideration	1,200,000	'	'	'	'	'	'
Fair value adjustment to contingent consideration	-1,000,000	'	'	'	'	'	'
Estimate of fair value of transitional services agreement	0	'	'	'	'	'	'
Fair value adjustment to transitional services agreement	-300,000	'	'	'	'	'	'
Less book value of assets sold and direct costs related to the sale:	'	'	'	'	'	'	'
Fixed assets	-135,000	'	-1,312,000	'	-22,000	'	-3,131,000
Inventories	-3,051,000	'	-876,000	'	-1,299,000	'	'
Other assets	-304,000	'	'	'	'	'	-1,362,000
Goodwill allocation	'	'	-7,323,000	'	'	'	'
Liabilities transferred	'	'	'	'	'	'	476,000
Transaction and other costs	-126,000	'	-4,239,000	'	-957,000	'	-1,657,000
Gain on divestiture	-3,716,000	3,400,000	82,349,000	82,300,000	7,986,000	8,000,000	20,656,000
Escrow deposits related to property sales	'	'	'	'	1,000,000	'	'
Holding period for escrow deposit	'	'	'	'	'1 year	'	'
Cash deposit received from divestiture of business	'	'	$96,099,000	'	'	'	$5,000,000

Fair_Value_Measurement_Details

Fair Value Measurement (Details) (Fair Value, Measurements, Recurring, USD $)	Mar. 30, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Estimate of Fair Value, Fair Value Disclosure [Member]	'	'
Cash equivalents and short-term investments:	'	'
U.S. government treasuries and agencies securities	$112,253	$87,379
Money market funds	53,430	79,083
Asset-backed securities	22,332	9,855
Corporate bonds	199,806	58,716
International government bonds	3,014	3,066
Corporate commercial paper	6,246	'
Bank deposits	18,538	16,583
Repurchase agreements	46	'
Municipal bonds	9,210	2,094
Total assets measured at fair value	424,875	256,776
Liabilities:	'	'
Fair value of contingent consideration	2,140	6,695
Total liabilities measured at fair value	2,140	6,695
Quoted Prices in Active Markets for Identical Assets (Level 1)	'	'
Cash equivalents and short-term investments:	'	'
U.S. government treasuries and agencies securities	112,253	87,379
Money market funds	53,430	79,083
Asset-backed securities	0	'
Corporate bonds	0	0
International government bonds	0	0
Corporate commercial paper	0	'
Bank deposits	0	0
Repurchase agreements	0	'
Municipal bonds	0	0
Total assets measured at fair value	165,683	166,462
Liabilities:	'	'
Fair value of contingent consideration	'	0
Total liabilities measured at fair value	'	0
Significant Other Observable Inputs (Level 2)	'	'
Cash equivalents and short-term investments:	'	'
U.S. government treasuries and agencies securities	0	0
Money market funds	0	0
Asset-backed securities	22,332	9,855
Corporate bonds	199,806	58,716
International government bonds	3,014	3,066
Corporate commercial paper	6,246	'
Bank deposits	18,538	16,583
Repurchase agreements	46	'
Municipal bonds	9,210	2,094
Total assets measured at fair value	259,192	90,314
Liabilities:	'	'
Fair value of contingent consideration	'	0
Total liabilities measured at fair value	'	0
Significant Unobservable Inputs (Level 3)	'	'
Cash equivalents and short-term investments:	'	'
U.S. government treasuries and agencies securities	0	0
Money market funds	0	0
Asset-backed securities	0	'
Corporate bonds	0	0
International government bonds	0	'
Corporate commercial paper	0	'
Bank deposits	0	0
Repurchase agreements	0	'
Municipal bonds	0	0
Total assets measured at fair value	0	0
Liabilities:	'	'
Fair value of contingent consideration	2,140	6,695
Total liabilities measured at fair value	$2,140	$6,695

Fair_Value_Measurement_Details1

Fair Value Measurement (Details 2) (Fair Value, Measurements, Recurring, Significant Unobservable Inputs (Level 3), USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)	'
Change in fair value of Level 3 liability	'
Balance as of March 31, 2013	$6,695
Changes of fair value during the year	575
Payment made during the year	-5,130
Balance as of March 30, 2014	$2,140

Investments_Details

Investments (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013
Schedule of Available-for-sale Securities [Line Items]	'	'
Estimated Fair Value	$362,604	$166,333
Total available-for-sale investments [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost	-424,675	-256,773
Gross Unrealized Gains	454	65
Gross Unrealized Losses	-254	-62
Estimated Fair Value	424,875	256,776
U.S. government treasuries and agencies securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost	-112,268	-87,356
Gross Unrealized Gains	76	24
Gross Unrealized Losses	-91	-1
Estimated Fair Value	112,253	87,379
Money market funds	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost	-53,430	-79,083
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	53,430	79,083
Asset-backed securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost	-22,330	-9,860
Gross Unrealized Gains	11	2
Gross Unrealized Losses	-9	-7
Estimated Fair Value	22,332	9,855
Corporate bonds	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost	-199,598	-58,733
Gross Unrealized Gains	335	33
Gross Unrealized Losses	-127	-50
Estimated Fair Value	199,806	58,716
International government bonds	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost	-3,023	-3,069
Gross Unrealized Gains	0	1
Gross Unrealized Losses	-9	-4
Estimated Fair Value	3,014	3,066
Corporate commercial paper	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost	-6,246	'
Gross Unrealized Gains	0	'
Gross Unrealized Losses	0	'
Estimated Fair Value	6,246	'
Bank deposits	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost	-18,538	-16,583
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	18,538	16,583
Repurchase agreements	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost	-46	'
Gross Unrealized Gains	0	'
Gross Unrealized Losses	0	'
Estimated Fair Value	46	'
Municipal bonds	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost	-9,196	-2,089
Gross Unrealized Gains	32	5
Gross Unrealized Losses	-18	0
Estimated Fair Value	9,210	2,094
Less amounts classified as cash equivalents	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost	-62,271	-90,443
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	62,271	90,443
Short-term investments	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost	-362,404	-166,330
Gross Unrealized Gains	454	65
Gross Unrealized Losses	-254	-62
Estimated Fair Value	$362,604	$166,333

Investments_Details_2

Investments (Details 2) (USD $)	Mar. 30, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Amortized Cost	'	'
Due in 1 year or less	$173,850	$186,747
Due in 1-2 years	101,275	25,053
Due in 2-5 years	149,550	44,973
Total investments in available-for-sale debt securities	424,675	256,773
Estimated Fair Value	'	'
Due in 1 year or less	173,891	186,771
Due in 1-2 years	101,378	25,038
Due in 2-5 years	149,606	44,967
Total investments in available-for-sale debt securities	$424,875	$256,776

Investments_Details_3

Investments (Details 3) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]	'	'
Fair Value Less than 12 months	$107,356	$42,813
Unrealized Loss Less than 12 months	-254	-62
Fair Value 12 months or Greater	0	0
Unrealized Loss 12 months or Greater	0	0
Fair Value Total	107,356	42,813
Unrealized Loss Total	-254	-62
Corporate bonds	'	'
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]	'	'
Fair Value Less than 12 months	52,783	32,009
Unrealized Loss Less than 12 months	-127	-50
Fair Value 12 months or Greater	0	0
Unrealized Loss 12 months or Greater	0	0
Fair Value Total	52,783	32,009
Unrealized Loss Total	-127	-50
Asset-backed securities	'	'
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]	'	'
Fair Value Less than 12 months	11,156	6,473
Unrealized Loss Less than 12 months	-9	-7
Fair Value 12 months or Greater	0	'
Unrealized Loss 12 months or Greater	0	'
Fair Value Total	11,156	6,473
Unrealized Loss Total	-9	-7
U.S. government treasuries and agencies securities	'	'
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]	'	'
Fair Value Less than 12 months	36,403	3,324
Unrealized Loss Less than 12 months	-91	-1
Fair Value 12 months or Greater	0	0
Unrealized Loss 12 months or Greater	0	0
Fair Value Total	36,403	3,324
Unrealized Loss Total	-91	-1
Municipal bonds	'	'
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]	'	'
Fair Value Less than 12 months	4,000	'
Unrealized Loss Less than 12 months	-18	'
Fair Value 12 months or Greater	0	'
Unrealized Loss 12 months or Greater	0	'
Fair Value Total	4,000	'
Unrealized Loss Total	-18	'
International government bonds	'	'
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]	'	'
Fair Value Less than 12 months	3,014	1,007
Unrealized Loss Less than 12 months	-9	-4
Fair Value 12 months or Greater	0	0
Unrealized Loss 12 months or Greater	0	0
Fair Value Total	3,014	1,007
Unrealized Loss Total	($9)	($4)

Investments_Details_4

Investments (Details 4) (Non-marketable Equity Securities, USD $)	12 Months Ended
	Mar. 31, 2013	Apr. 01, 2012	Mar. 30, 2014
	Securities	Securities
Non-marketable Equity Securities	'	'	'
Non-marketable equity securities [Abstract]	'	'	'
Number of non-marketable private equity investments impaired (securities)	2	2	'
Other-than temporary impairment loss during period	$1,700,000	$3,400,000	'
Proceeds from sale of non-marketable equity security	'	2,600,000	'
Recorded gain on sale of non-marketable equity securities	'	600,000	'
Carrying value of non-marketable equity securities	$0	'	$0

StockBased_Employee_Compensati2

Stock-Based Employee Compensation-Text (Details) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 30, 2014
	Y
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Life of options granted in the 2004 plan	'7 years
Vesting period under original 2004 Plan	'4 years
One quarter of the shares vest from date of grant (in years)	1
Minimum vesting period of non-performance based full value awards made under the 2004 Plan	'3 years
Minimum vesting period performance based full value awards made under the 2004 Plan (in years)	'1 year
ESPP	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Shares reserved for issuance under the amended plan (in shares)	9,000,000
Stock Options	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Original number of shares of reserved for issuance (shares)	28,500,000
Shares reserved for issuance under the amended plan (in shares)	36,800,000
Increase in shares available after amendment (shares)	8,300,000
Original plan dilution factor to be equivalent to the amended plan (shares)	1.74
Months Remaining for shares to vest after one year after grant (in months)	'36 months
Shares available for future grant as of balance sheet date (in shares)	14,600,000
Weighted-Average Remaining Contractual Life (in years)	'4 years 0 months 22 days
Intrinsic value	26.9
Weighted average remaining contractual term	'3 years 0 months 11 days
Intrinsic value of exercisable options	16.3
Compensation cost not yet recognized	2.3
Period for recognition	'1 year 1 month 24 days
Options vested and expected to vest (shares)	5,100,000
Weighted average exercise price (in dollars per share)	7.15
Weighted average remaining contractual term	'3 years 10 months 28 days
Aggregate intrinsic value	25
Minimum | Stock Options	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Minimum Exercise price of fair market value of the options under the 2004 plan on the date the option is granted (percent)	100.00%
Maximum | Stock Options	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Percent that full value awards that result in the issuance of an aggregate of common stock available under the 2004 Plan may be granted to any one or more participants without respect to such minimum vesting provisions	5.00%

StockBased_Employee_Compensati3

Stock-Based Employee Compensation-Expense (Details) (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]	'	'	'
Allocated Share-based Compensation Expense	$13,352	$13,272	$16,733
Cost of revenue	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Allocated Share-based Compensation Expense	1,189	1,113	1,784
Research and development	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Allocated Share-based Compensation Expense	5,601	6,692	8,566
Selling, general and administrative	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Allocated Share-based Compensation Expense	5,887	5,250	5,983
Discontinued operations	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Allocated Share-based Compensation Expense	$675	$217	$400

StockBased_Employee_Compensati4

Stock-Based Employee Compensation-Valuation Assumptions (Details) (USD $)	12 Months Ended
	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Stock Options	'	'	'
Valuation Assumptions	'	'	'
Expected term	'4 years 7 months 6 days	'4 years 7 months 22 days	'4 years 3 months 22 days
Risk-free interest rate (percent)	0.95%	0.73%	1.33%
Volatility (percent)	40.10%	45.00%	43.50%
Dividend Yield (percent)	0.00%	0.00%	0.00%
Weighted average grant-date fair value (in dollars per share)	$2.99	$2.18	$2.86
ESPP	'	'	'
Valuation Assumptions	'	'	'
Expected term	'3 months	'3 months	'3 months
Risk-free interest rate (percent)	0.06%	0.08%	0.03%
Volatility (percent)	35.50%	35.00%	47.70%
Dividend Yield (percent)	0.00%	0.00%	0.00%
Weighted average grant-date fair value (in dollars per share)	$1.89	$1.42	$1.53

StockBased_Employee_Compensati5

Stock-Based Employee Compensation-Options Activity (Details) (Stock Options, USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 30, 2014
Stock Options	'
Stock Option Activity	'
Beginning stock options outstanding (in shares)	12,817
Granted (in shares)	1,946
Exercised (in shares)	-5,766	[1]
Cancelled (in shares)	-3,395
Ending stock options outstanding (in shares)	5,602
Ending stock options exercisable (in shares)	3,210
Price	'
Beginning stock options outstanding (in dollars per share)	$7.12
Granted (in dollars per share)	$8.67
Exercised (in dollars per share)	$6.48	[1]
Cancelled (in dollars per share)	$8.95
Ending stock options outstanding (in dollars per share)	$7.21
Ending stock options exercisable (in dollars per share)	$6.99
[1]	Upon exercise, the Company issues new shares of common stock.

StockBased_Employee_Compensati6

Stock-Based Employee Compensation-Exercise Prices (Details) (Stock Options, USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 30, 2014
Options Outstanding	'
Number Outstanding (shares)	5,602
Weighted-Average Remaining Contractual Life (in years)	'4 years 0 months 22 days
Weighted-Average Exercise Price	$7.21
Options Exercisable	'
Number Exercisable (in thousands)	3,210
Weighted-Average Exercise Price	$6.99
4.84 - 5.33	'
Summary of information about stock options outstanding	'
Range of exercise prices, lower limit (in dollars per share)	$4.84
Range of exercise prices, upper limit (in dollars per share)	$5.33
Options Outstanding	'
Number Outstanding (shares)	653
Weighted-Average Remaining Contractual Life (in years)	'3 years 6 months
Weighted-Average Exercise Price	$5.18
Options Exercisable	'
Number Exercisable (in thousands)	449
Weighted-Average Exercise Price	$5.13
5.40-5.75	'
Summary of information about stock options outstanding	'
Range of exercise prices, lower limit (in dollars per share)	$5.40
Range of exercise prices, upper limit (in dollars per share)	$5.75
Options Outstanding	'
Number Outstanding (shares)	654
Weighted-Average Remaining Contractual Life (in years)	'3 years 6 months 29 days
Weighted-Average Exercise Price	$5.71
Options Exercisable	'
Number Exercisable (in thousands)	542
Weighted-Average Exercise Price	$5.72
5.77 - 5.77	'
Summary of information about stock options outstanding	'
Range of exercise prices, lower limit (in dollars per share)	$5.77
Range of exercise prices, upper limit (in dollars per share)	$5.77
Options Outstanding	'
Number Outstanding (shares)	969
Weighted-Average Remaining Contractual Life (in years)	'5 years 1 month 6 days
Weighted-Average Exercise Price	$5.77
Options Exercisable	'
Number Exercisable (in thousands)	348
Weighted-Average Exercise Price	$5.77
5.79-6.00	'
Summary of information about stock options outstanding	'
Range of exercise prices, lower limit (in dollars per share)	$5.79
Range of exercise prices, upper limit (in dollars per share)	$6
Options Outstanding	'
Number Outstanding (shares)	752
Weighted-Average Remaining Contractual Life (in years)	'2 years 29 days
Weighted-Average Exercise Price	$5.93
Options Exercisable	'
Number Exercisable (in thousands)	707
Weighted-Average Exercise Price	$5.93
6.04-7.24	'
Summary of information about stock options outstanding	'
Range of exercise prices, lower limit (in dollars per share)	$6.04
Range of exercise prices, upper limit (in dollars per share)	$7.24
Options Outstanding	'
Number Outstanding (shares)	358
Weighted-Average Remaining Contractual Life (in years)	'3 years 11 months 5 days
Weighted-Average Exercise Price	$6.75
Options Exercisable	'
Number Exercisable (in thousands)	233
Weighted-Average Exercise Price	$6.69
7.67-7.67	'
Summary of information about stock options outstanding	'
Range of exercise prices, lower limit (in dollars per share)	$7.67
Range of exercise prices, upper limit (in dollars per share)	$7.67
Options Outstanding	'
Number Outstanding (shares)	626
Weighted-Average Remaining Contractual Life (in years)	'6 years 1 month 17 days
Weighted-Average Exercise Price	$7.67
Options Exercisable	'
Number Exercisable (in thousands)	0
Weighted-Average Exercise Price	$0
7.81-8.22	'
Summary of information about stock options outstanding	'
Range of exercise prices, lower limit (in dollars per share)	$7.81
Range of exercise prices, upper limit (in dollars per share)	$8.22
Options Outstanding	'
Number Outstanding (shares)	106
Weighted-Average Remaining Contractual Life (in years)	'2 years 5 months 19 days
Weighted-Average Exercise Price	$8.02
Options Exercisable	'
Number Exercisable (in thousands)	87
Weighted-Average Exercise Price	$8.06
8.49-8.49	'
Summary of information about stock options outstanding	'
Range of exercise prices, lower limit (in dollars per share)	$8.49
Range of exercise prices, upper limit (in dollars per share)	$8.49
Options Outstanding	'
Number Outstanding (shares)	809
Weighted-Average Remaining Contractual Life (in years)	'4 years 22 days
Weighted-Average Exercise Price	$8.49
Options Exercisable	'
Number Exercisable (in thousands)	518
Weighted-Average Exercise Price	$8.49
8.69-12.51	'
Summary of information about stock options outstanding	'
Range of exercise prices, lower limit (in dollars per share)	$8.69
Range of exercise prices, upper limit (in dollars per share)	$12.51
Options Outstanding	'
Number Outstanding (shares)	583
Weighted-Average Remaining Contractual Life (in years)	'4 years 10 months 2 days
Weighted-Average Exercise Price	$11.82
Options Exercisable	'
Number Exercisable (in thousands)	233
Weighted-Average Exercise Price	$11.86
14.15-16.26	'
Summary of information about stock options outstanding	'
Range of exercise prices, lower limit (in dollars per share)	$14.15
Range of exercise prices, upper limit (in dollars per share)	$16.26
Options Outstanding	'
Number Outstanding (shares)	92
Weighted-Average Remaining Contractual Life (in years)	'1 month 17 days
Weighted-Average Exercise Price	$15.01
Options Exercisable	'
Number Exercisable (in thousands)	93
Weighted-Average Exercise Price	$15.01

StockBased_Employee_Compensati7

Stock-Based Employee Compensation-Equity other than Options (Details) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 30, 2014
Restricted Stock Units (RSUs)	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Vesting period of restricted stock units from grant date (in years)	'3 years
Annual award vesting percentage	33.33%
Performance Stock Unit Activity	'
Beginning units outstanding (in shares)	2,591,000
Granted (in shares)	2,123,000
Released (in shares)	-901,000
Forfeited (in shares)	-889,000
Ending units outstanding (in shares)	2,924,000
Weighted- Average Grant Date Fair Value Per Share	'
Beginning units outstanding (in dollars per share)	$6.26
Granted (in dollars per share)	$8.17
Released (in dollars per share)	$6.26
Forfeited (in dollars per share)	$6.98
Ending units outstanding (in dollars per share)	$7.43
Vested and expected to vest (shares)	2,400,000
Weighted average remaining contractual terms	'1 year 2 months 26 days
Intrinsic value	$29
Performance Shares	'
Performance Stock Unit Activity	'
Beginning units outstanding (in shares)	744,000
Granted (in shares)	491,000
Released (in shares)	0
Forfeited (in shares)	-431,000
Ending units outstanding (in shares)	804,000
Weighted- Average Grant Date Fair Value Per Share	'
Beginning units outstanding (in dollars per share)	$7.50
Granted (in dollars per share)	$8.46
Released (in dollars per share)	$0
Forfeited (in dollars per share)	$8.04
Ending units outstanding (in dollars per share)	$7.79
Vested and expected to vest (shares)	600,000
Weighted average remaining contractual terms	'1 year 2 months 12 days
Intrinsic value	$7.60

StockBased_Employee_Compensati8

Stock-Based Employee Compensation-ESPP (Details) (ESPP, USD $)	12 Months Ended
	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
ESPP	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Shares reserved for issuance under the amended plan (in shares)	9,000,000	'	'
Limit of fair market value any one employee can purchase per year (in dollars)	$25,000	'	'
Number of shares issued (shares)	1,206,000	1,679,000	2,351,000
Average issuance price (in dollars per share)	$7.23	$5.13	$4.83
Number of shares available at year-end (shares)	5,019,000	1,226,000	2,905,000

Stockholders_Equity_Details

Stockholders' Equity (Details) (USD $)	12 Months Ended		0 Months Ended	12 Months Ended	0 Months Ended	12 Months Ended
Share data in Thousands, except Per Share data, unless otherwise specified	Mar. 30, 2014	Apr. 01, 2012	Jul. 21, 2010	Apr. 01, 2012	Oct. 23, 2013	Mar. 30, 2014
			July 2010 Authorization	July 2010 Authorization	October 2013 Authorization	October 2013 Authorization
Stock Repurchase Program [Line Items]	'	'	'	'	'	'
Share repurchase plan, authorized amount	'	'	$225,000,000	'	$150,000,000	'
Repurchase of common stock (in shares)	'	'	'	10,400	'	4,100
Common stock repurchase, average price (in dollars per share)	'	'	'	$6.49	'	'
Common stock repurchase, total purchase price	44,005,000	67,472,000	'	67,500,000	'	44,000,000
Share repurchase program, amount available for future purchase	$106,000,000	'	'	'	'	'

Balance_Sheet_Detail_Details

Balance Sheet Detail (Details) (USD $)	12 Months Ended
	Mar. 30, 2014		Mar. 31, 2013		Apr. 01, 2012
Balance Sheet Related Disclosures [Abstract]	'		'		'
Depreciation	$20,900,000		$20,100,000		$18,800,000
Inventories, net	'		'		'
Raw materials	7,745,000		7,008,000		'
Work-in-process	18,436,000		24,123,000		'
Finished goods	23,441,000		25,424,000		'
Total inventories, net	49,622,000		56,555,000		'
Property, plant and equipment, net	'		'		'
Land	11,724,000		11,832,000		'
Machinery and equipment	289,393,000		296,174,000		'
Building and leasehold improvements	48,558,000		48,991,000		'
Total property, plant and equipment, gross	349,675,000		356,997,000		'
Less: accumulated depreciation	-279,848,000		-282,009,000		'
Total property, plant and equipment, net	69,827,000		74,988,000		'
Other current liabilities	'		'		'
Short-term portion of supplier obligations	762,000	[1]	407,000	[1]	'
Other	10,763,000	[2]	14,245,000	[2]	'
Total other current liabilities	11,525,000		14,652,000		'
Other long-term obligations	'		'		'
Deferred compensation related liabilities	13,786,000		14,615,000		'
Other	4,897,000		7,407,000		'
Total other long-term liabilities	18,683,000		22,022,000		'
Fixed assets held for sale	$2,900,000		'		'
[1]	Supplier obligations represent payments due under various software design tool and technology license agreements.
[2]	Other current liabilities consist primarily of acquisition related accrued contingent liabilities, accrued royalties and outside commissions, accrued severance costs and other accrued unbilled expenses.

Deferred_Income_on_Shipments_t2

Deferred Income on Shipments to Distributors (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013
Deferred Revenue Disclosure [Abstract]	'	'
Gross deferred revenue	$17,261	$17,581
Gross deferred costs	-3,255	-3,042
Deferred income on shipments to distributors	$14,006	$14,539
Discount from list price billed to the customer (percent)	37.00%	'

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]	'	'	'
Cumulative translation adjustments, beginning balance	$1,563	'	'
Unrealized gain on available-for-sale investments, beginning balance	0	'	'
Pension adjustments, beginning balance	-77	'	'
Accumulated other comprehensive income, beginning balance	1,486	'	'
Currency translation adjustments, net of tax	-66	235	-383
Other comprehensive income (loss) before reclassifications	291	'	'
Other comprehensive income (loss) before reclassifications	-5	-77	0
Amounts reclassified out of AOCI	-103	'	'
Change in net unrealized gain (loss) on investments, net of tax	194	-35	-61
Unrealized gain on available-for-sale investments	226	'	'
Net current-period other comprehensive income (loss)	123	123	-444
Cumulative translation adjustments, Ending balance	1,497	1,563	'
Unrealized gain on available-for-sale investments, Ending balance	194	0	'
Pension adjustments, Ending balance	-82	-77	'
Accumulated other comprehensive income, Ending balance	1,609	1,486	'
Cumulative translation adjustments	'	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]	'	'	'
Currency translation adjustments, net of tax	-66	'	'
Unrealized gain on available-for-sale investments	'	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]	'	'	'
Amounts reclassified out of AOCI	-97	'	'
Change in net unrealized gain (loss) on investments, net of tax	194	'	'
Pension adjustments	'	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]	'	'	'
Other comprehensive income (loss) before reclassifications	1	'	'
Amounts reclassified out of AOCI	($6)	'	'

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets, Net (Details) (USD $)	12 Months Ended		3 Months Ended	12 Months Ended		3 Months Ended		12 Months Ended
	Mar. 30, 2014	Mar. 31, 2013	Dec. 29, 2013	Mar. 30, 2014	Mar. 31, 2013	Sep. 29, 2013	Sep. 30, 2012	Mar. 30, 2014	Mar. 31, 2013
			Communications	Communications	Communications	Computing and Consumer	Computing and Consumer	Computing and Consumer	Computing and Consumer
Goodwill [Roll Forward]	'	'	'	'	'	'	'	'	'
Balance	$144,924,000	$96,092,000	'	$124,205,000	$74,673,000	'	'	$20,719,000	$21,419,000
Impairment losses	-2,161,000	'	-2,100,000	-2,161,000	'	'	'	'	'
Dispositions	-7,323,000	-700,000	'	'	0	-7,300,000	-700,000	-7,323,000	-700,000
Additions	204,000	49,532,000	'	204,000	49,532,000	'	'	0	0
Balance	135,644,000	144,924,000	'	122,248,000	124,205,000	'	'	13,396,000	20,719,000
Accumulated impairment loss	$922,500,000	$920,400,000	'	'	'	'	'	'	'

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets, Net (Details 1) (USD $)	Mar. 30, 2014		Mar. 31, 2013
Acquired Finite-Lived Intangible Assets [Line Items]	'		'
Gross Assets	$355,702,000		$384,172,000
Accumulated Amortization	-336,961,000		-335,570,000
Net Assets	18,741,000		48,602,000
Total amortizable purchased intangible assets	'		'
Acquired Finite-Lived Intangible Assets [Line Items]	'		'
Gross Assets	'		381,739,000
Accumulated Amortization	'		-335,570,000
Net Assets	'		46,169,000
Existing technology	'		'
Acquired Finite-Lived Intangible Assets [Line Items]	'		'
Gross Assets	217,923,000		241,197,000
Accumulated Amortization	-203,888,000		-203,129,000
Net Assets	14,035,000	[1]	38,068,000
Trademarks	'		'
Acquired Finite-Lived Intangible Assets [Line Items]	'		'
Gross Assets	4,411,000		4,411,000
Accumulated Amortization	-2,934,000		-2,018,000
Net Assets	1,477,000		2,393,000
Customer relationships	'		'
Acquired Finite-Lived Intangible Assets [Line Items]	'		'
Gross Assets	131,093,000		131,931,000
Accumulated Amortization	-128,681,000		-128,107,000
Net Assets	2,412,000	[1]	3,824,000
Backlog	'		'
Acquired Finite-Lived Intangible Assets [Line Items]	'		'
Gross Assets	'		1,600,000
Accumulated Amortization	'		-1,509,000
Net Assets	'		91,000
Non-compete agreements	'		'
Acquired Finite-Lived Intangible Assets [Line Items]	'		'
Gross Assets	2,275,000		2,600,000
Accumulated Amortization	-1,458,000		-807,000
Net Assets	817,000	[1]	1,793,000
IPR&D	'		'
Acquired Finite-Lived Intangible Assets [Line Items]	'		'
Gross Assets	'		2,433,000	[2]
Accumulated Amortization	'		0	[2]
Net Assets	'		2,433,000	[2]
High-Speed Converter Business	'		'
Acquired Finite-Lived Intangible Assets [Line Items]	'		'
Current intangible assets	$6,600,000		'
[1]	Includes $6.6 million in HSC assets held for sale.
[2]	IPR&D is initially capitalized at fair value as an intangible asset with an indefinite life and assessed for impairment thereafter. When the IPR&D project is complete, it is reclassified as an amortizable purchased intangible asset and is amortized over its estimated useful life. If an IPR&D project is abandoned, the Company will record a charge for the carrying value of the related intangible asset to its Consolidated Statements of Operations in the period it is abandoned.

Goodwill_and_Intangible_Assets4

Goodwill and Intangible Assets, Net (Details 2) (USD $)

12 Months Ended

3 Months Ended

In Thousands, unless otherwise specified

Mar. 30, 2014

Mar. 31, 2013

Apr. 01, 2012

Mar. 30, 2014

Mar. 31, 2013

Apr. 01, 2012

Mar. 30, 2014

Mar. 31, 2013

Apr. 01, 2012

Mar. 30, 2014

Mar. 31, 2013

Apr. 01, 2012

Mar. 30, 2014

Mar. 31, 2013

Apr. 01, 2012

Mar. 30, 2014

Mar. 31, 2013

Apr. 01, 2012

Mar. 30, 2014

Mar. 30, 2014

Mar. 30, 2014

Mar. 30, 2014

Existing technology

Existing technology

Existing technology

Trademarks

Trademarks

Trademarks

Customer relationships

Customer relationships

Customer relationships

Backlog

Backlog

Backlog

Non-compete agreements

Non-compete agreements

Non-compete agreements

Minimum

Maximum

Cost of revenue

Research and development

IPR&D

IPR&D

Acquired Finite-Lived Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization of Intangible Assets

$24,793

$20,546

$16,489

$19,730

$14,131

$12,527

$3,405

$874

$452

$916

$3,225

$3,510

$91

$1,509

$0

$651

$807

$0

'

'

$8,700

'

Finite-Lived Intangible Asset, Useful Life

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'6 months

'7 years

'

'

Goodwill and acquisition-related intangible asset impairment

$7,230

$0

$0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$2,400

Goodwill_and_Intangible_Assets5

Goodwill and Intangible Assets, Net (Details 3) (USD $)	Mar. 30, 2014
In Thousands, unless otherwise specified
Estimated amortization expense [Abstract]	'
2015	$6,572
2016	3,083
2017	2,185
2018	256
2019 and thereafter	10
Total	$12,106

Restructuring_Details

Restructuring (Details) (USD $)

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

Mar. 30, 2014

Mar. 31, 2013

Apr. 01, 2012

Mar. 30, 2014

Mar. 31, 2013

Apr. 01, 2012

Mar. 30, 2014

Mar. 31, 2013

Apr. 01, 2012

Jun. 30, 2013

Mar. 30, 2014

Mar. 31, 2013

Mar. 28, 2010

Oct. 02, 2005

Mar. 30, 2014

Mar. 30, 2014

Mar. 31, 2013

Apr. 01, 2012

Mar. 31, 2013

Apr. 01, 2012

Apr. 01, 2012

Apr. 03, 2011

Mar. 31, 2013

Dec. 27, 2009

Oct. 02, 2005

Oct. 02, 2005

Oct. 02, 2005

Employees

Employees

Cost of Revenues

Cost of Revenues

Cost of Revenues

Operating Expenses

Operating Expenses

Operating Expenses

Employee Severance

Employee Severance

Employee Severance

Employee Severance

Facility Closing

Facility Closing

Smart Meter business

Video Processing Product Lines

Video Processing Product Lines

Oregon Facility

Oregon Facility

Oregon Facility

Singapore Facility

Singapore Facility

Other Facilities

Cost of revenue

Research and development

Selling, general and administrative expenses

Employee Severance

Employee Retention

Employee Retention

Employee Retention

Employee Retention

Employee Severance

Facility Closing

Facility Closing

Facility Closing

Facility Closing

Facility Closing

Facility Closing

Restructuring Reserve [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance as of beginning of period

$1,662,000

$5,198,000

$10,002,000

$26,000

$1,606,000

$9,187,000

$1,636,000

$3,592,000

$815,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Provision

5,538,000

5,834,000

3,090,000

0

557,000

-1,425,000

5,538,000

5,277,000

4,515,000

'

'

400,000

4,800,000

'

'

'

1,100,000

3,600,000

2,500,000

'

'

500,000

'

'

'

'

'

Cash payments

-6,562,000

-9,370,000

-7,894,000

-26,000

-2,137,000

-6,156,000

-6,536,000

-7,233,000

-1,738,000

-1,100,000

-4,900,000

-3,200,000

'

'

'

-400,000

-4,700,000

'

-1,000,000

'

'

'

'

'

'

'

'

Balance as of end of period

638,000

1,662,000

5,198,000

0

26,000

1,606,000

638,000

1,636,000

3,592,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restructuring Costs

5,500,000

4,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restructuring and Related Cost, Number of Positions Eliminated

117

132

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restructuring Reserve, Accrual Adjustment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3,100,000

'

'

'

'

'

'

Quantifying Misstatement in Current Year Financial Statements, Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,100,000

'

'

'

'

'

'

'

Lease payments made since initial restructuring

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,100,000

'

'

'

'

'

'

'

500,000

'

'

'

'

Lease impairment charges

'

'

'

'

'

'

'

'

'

'

'

'

'

2,100,000

'

'

'

'

'

'

'

'

'

900,000

600,000

900,000

600,000

Future minimum payments due during fiscal 2014

$3,926,000

'

'

'

'

'

'

'

'

'

'

'

'

'

$200,000

'

'

'

'

'

'

'

'

'

'

'

'

Commitments_and_Contingencies_1

Commitments and Contingencies (Details) (USD $)	12 Months Ended			1 Months Ended
	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012	Jan. 31, 2012
				Environmental Violation
				Maxim I Properties Litigation
				defendant
Loss Contingencies [Line Items]	'	'	'	'
Maximum amount of potential future payments under various financial guarantees	$2,200,000	'	'	'
Operating Leases, Future Minimum Payments Due [Abstract]	'	'	'	'
2015	3,926,000	'	'	'
2016	3,691,000	'	'	'
2017	2,995,000	'	'	'
2018	2,804,000	'	'	'
2019 and thereafter	3,790,000	'	'	'
Total	17,206,000	'	'	'
Rent expense	4,600,000	4,700,000	3,700,000	'
Other long-term supplier obligations	4,200,000	10,300,000	'	'
Standard warranty period	'1 year	'	'	'
Extended warranty period	'2 years	'	'	'
Total warranty accrual	$300,000	$200,000	'	'
Number of defendants	'	'	'	30

Employee_Benefit_Plans_Details

Employee Benefit Plans (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]	'	'	'
401(k) matching contributions expense	$2.10	$2.60	$2.90
Participant balances percent vested (percent)	100.00%	'	'
Deferred compensation plan obligations	13.8	14.6	'
Deferred compensation plan assets	16.1	17	'
Deferred compensation plan administration expense	0.3	0.3	0.3
Net liability for all international employee benefit plans	1.4	1.4	'
Net accumulated liability	0.9	'	'
Unrecognized actuarial losses	0.2	'	'
Unrecognized prior service gains	0.1	'	'
Fox Enterprises	'	'	'
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]	'	'	'
Deferred compensation plan obligations	1.6	1.6	'
Deferred compensation plan assets	$0.70	'	'

Income_Taxes_Details

Income Taxes (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Components of Income Tax Expense (Benefit) [Line Items]	'	'	'
Income (Loss) before income taxes	$89,356	($22,176)	$58,639
Current:	'	'	'
United States	-118	-49	-321
State	35	128	-118
Foreign	878	1,417	545
Total current	795	1,496	106
Deferred:	'	'	'
United States	240	-3,159	33
State	14	-341	1
Foreign	-57	0	39
Total Deferred	197	-3,500	73
Income tax expense (benefit)	992	-2,004	179
United States	'	'	'
Components of Income Tax Expense (Benefit) [Line Items]	'	'	'
Income (Loss) before income taxes	9,491	-21,206	-6,126
Foreign	'	'	'
Components of Income Tax Expense (Benefit) [Line Items]	'	'	'
Income (Loss) before income taxes	$79,865	($970)	$64,765

Income_Taxes_Details_2

Income Taxes (Details 2) (USD $)	12 Months Ended
	Mar. 30, 2014	Mar. 31, 2013
Deferred tax assets:	'	'
Deferred income on shipments to distributors	$2,666,000	$2,576,000
Non-deductible accruals and reserves	10,233,000	9,778,000
Inventory related and other expenses	1,761,000	1,427,000
Net operating losses and credit carryforwards	114,858,000	97,337,000
Depreciation and amortization	13,725,000	24,864,000
Stock options	1,713,000	4,193,000
Other	315,000	369,000
Total deferred tax assets	145,271,000	140,544,000
Deferred tax liabilities:	'	'
Purchased intangibles	-558,000	-4,158,000
U.S. tax on earnings of foreign subsidiaries not indefinitely reinvested	0	0
Other	-3,087,000	-3,633,000
Total deferred tax liabilities	-3,645,000	-7,791,000
Valuation allowance	-143,704,000	-134,633,000
Net deferred tax liabilities	2,078,000	1,880,000
Change in valuation allowance for deferred tax assets	9,100,000	3,000,000
Amount of net tax benefits related to stock compensation benefits not recorded as DTAs	17,200,000	'
Research	'	'
Deferred tax liabilities:	'	'
Tax credit carryforwards	54,400,000	'
Foreign Tax Credit	'	'
Deferred tax liabilities:	'	'
Tax credit carryforwards	16,800,000	'
State Income Tax Credit	'	'
Deferred tax liabilities:	'	'
Tax credit carryforwards	78,000,000	'
Amount of tax credit carryforwards to expire	4,700,000	'
Federal	'	'
Deferred tax liabilities:	'	'
Net operating loss carryforwards	53,000,000	'
State	'	'
Deferred tax liabilities:	'	'
Net operating loss carryforwards	$104,800,000	'

Income_Taxes_Details_3

Income Taxes (Details 3) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Reconciliation between statutory and effective tax rate	'	'	'
Statutory U.S. income tax rate (percent)	35.00%	'	'
Provision (benefit) at 35% U.S. statutory rate	$31,275	($7,761)	$20,756
State tax, net of federal benefit	32	-119	85
Effect of foreign operations	-24,878	2,097	-22,059
Repatriation of foreign earnings	5,623	1,505	1,048
Net operating losses and tax credits (benefited) not benefited	-11,285	-2,640	-1,201
Stock-based compensation	-689	2,640	4,198
Liquidation of U.S. subsidiary	0	0	-1,218
Other	914	2,274	-1,430
Income tax expense (benefit)	$992	($2,004)	$179

Income_Taxes_Details_4

Income Taxes (Details 4) (USD $)	0 Months Ended	12 Months Ended
	Apr. 04, 2014	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Income Tax Holiday [Line Items]	'	'	'	'
U.S. income tax benefits from stock option exercises	'	$0	$0	$600,000
Undistributed earnings of foreign subsidiaries	'	772,700,000	'	'
Amount of unrecognized tax benefits that would favorably impact the effective tax rate	'	200,000	300,000	'
Amount of unrecognized tax benefits that would be offset by a change in valuation allowance	'	27,200,000	'	'
Interest and penalties related to unrecognized tax benefits as a component of income tax expense	'	0	100,000	'
Malaysia	'	'	'	'
Income Tax Holiday [Line Items]	'	'	'	'
Income tax holiday, length	'10 years	'	'	'
Net income effect of Malaysian tax holiday	'	$2,000,000	$4,100,000	$200,000
EPS effect of Malaysian tax holiday	'	$0.01	$0.03	$0.01

Income_Taxes_Details_5

Income Taxes (Details 5) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Activities of gross unrecognized tax benefits:	'	'	'
Beginning balance	$31,066	$29,718	$28,471
Increases related to prior year tax positions	90	532	443
Decreases related to prior year tax positions	-301	-296	0
Increases related to current year tax positions	1,498	1,427	937
Decreases related to the lapsing of statute of limitations	-116	-315	-133
Ending balance	$32,237	$31,066	$29,718

Segment_Information_Details

Segment Information (Details) (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

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Revenues by segment

$118,640

[1]

$124,628

[2]

$124,047

[3]

$117,464

$107,779

[4]

$114,277

$132,441

$129,955

$484,779

$484,452

$526,696

Amortization of intangible assets

'

'

'

'

'

'

'

'

-24,793

-20,546

-16,489

Impairment of acquired in-process R&D

'

'

'

'

'

'

'

'

-7,230

0

0

Amortization of stock-based compensation

'

'

'

'

'

'

'

'

-13,352

-13,272

-16,733

Other-than-temporary loss on investments

'

'

'

'

'

'

'

'

0

-1,708

-2,797

Interest income (expense) and other, net

'

'

'

'

'

'

'

'

2,707

1,708

-1,118

Income from continuing operations, before income taxes

'

'

'

'

'

'

'

'

112,294

591

38,221

Communications

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Revenues by segment

'

'

'

'

'

'

'

'

292,435

258,184

248,370

Income from continuing operations, before income taxes

'

'

'

'

'

'

'

'

103,457

78,995

82,178

Computing and Consumer

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Revenues by segment

'

'

'

'

'

'

'

'

192,344

226,268

278,326

Income from continuing operations, before income taxes

'

'

'

'

'

'

'

'

-22,658

-30,972

-21,247

Unallocated expenses:

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Amortization of intangible assets

'

'

'

'

'

'

'

'

-21,964

-16,339

-16,355

Inventory fair market value adjustment

'

'

'

'

'

'

'

'

0

-358

0

Impairment of acquired in-process R&D

'

'

'

'

'

'

'

'

-2,433

0

0

Gain on divestiture

'

'

'

'

'

'

'

'

78,632

7,986

20,656

Fabrication production transfer costs

'

'

'

'

'

'

'

'

0

0

-4,572

Asset impairments and other

'

'

'

'

'

'

'

'

-4,113

-6,096

315

Amortization of stock-based compensation

'

'

'

'

'

'

'

'

-12,677

-13,054

-16,333

Acquisition-related costs and other

'

'

'

'

'

'

'

'

-6,590

-5,584

-2,151

Acquisition-related costs and other

'

'

'

'

'

'

'

'

-802

-11,238

-168

Consulting expenses related to stockholder activities

'

'

'

'

'

'

'

'

0

-1,614

0

Deferred compensation plan expense (benefit)

'

'

'

'

'

'

'

'

51

-194

-74

Life insurance proceeds received

'

'

'

'

'

'

'

'

0

2,313

0

Other-than-temporary loss on investments

'

'

'

'

'

'

'

'

0

-1,708

-2,797

Interest income (expense) and other, net

'

'

'

'

'

'

'

'

$1,391

($1,546)

($1,231)

Maxtek | Customer Concentration Risk | Sales Revenue, Goods, Net

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Concentration risk (percentage)

'

'

'

'

'

'

'

'

'

13.00%

15.00%

Avnet | Customer Concentration Risk | Sales Revenue, Goods, Net

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Concentration risk (percentage)

'

'

'

'

'

'

'

'

12.00%

10.00%

11.00%

Uniquest | Customer Concentration Risk | Sales Revenue, Goods, Net

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Concentration risk (percentage)

'

'

'

'

'

'

'

'

'

10.00%

10.00%

[1]

In the fourth quarter of fiscal 2014, associated with the decision to discontinue production and sale of products using technology attained through the acquisitions of Mobius Microsystems in fiscal 2010 and IKOR in fiscal 2011, the Company recorded an additional $8.7 million in accelerated amortization of intangible assets which was charged to cost of revenues. In addition, the Company recorded a $2.4 million impairment of IPR&D to research and development expense, associated with the decision to discontinue further development required to complete the Mobius Microsystems acquired IPR&D.

[2]

In the third quarter of fiscal 2014, the Company recorded a loss of $3.4 million in net loss from continuing operations related to the divestiture of certain assets of its Audio business to Stravelis, Inc.

[3]

In the second quarter of fiscal 2014, the Company recorded a gain of $82.3 million in net income from continuing operations related to the divestiture of its PCI Express enterprise flash controller business to PMC-Sierra, Inc.

[4]

In the fourth quarter of fiscal 2013, the Company recorded a gain of $8.0 million in net income from continuing operations related to the divestiture of its smart meter business.

Segment_Information_Details_2

Segment Information (Details 2) (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]

'

'

'

'

'

'

'

'

'

'

'

Revenues

$118,640

[1]

$124,628

[2]

$124,047

[3]

$117,464

$107,779

[4]

$114,277

$132,441

$129,955

$484,779

$484,452

$526,696

APAC

'

'

'

'

'

'

'

'

'

'

'

Revenues from External Customers and Long-Lived Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

309,121

308,409

350,105

Americas

'

'

'

'

'

'

'

'

'

'

'

Revenues from External Customers and Long-Lived Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

71,305

[5]

76,876

[5]

76,711

[5]

Japan

'

'

'

'

'

'

'

'

'

'

'

Revenues from External Customers and Long-Lived Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

40,829

40,281

41,586

Europe

'

'

'

'

'

'

'

'

'

'

'

Revenues from External Customers and Long-Lived Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

63,524

58,886

58,294

United States

'

'

'

'

'

'

'

'

'

'

'

Revenues from External Customers and Long-Lived Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

$63,100

$69,600

$70,400

[1]

In the fourth quarter of fiscal 2014, associated with the decision to discontinue production and sale of products using technology attained through the acquisitions of Mobius Microsystems in fiscal 2010 and IKOR in fiscal 2011, the Company recorded an additional $8.7 million in accelerated amortization of intangible assets which was charged to cost of revenues. In addition, the Company recorded a $2.4 million impairment of IPR&D to research and development expense, associated with the decision to discontinue further development required to complete the Mobius Microsystems acquired IPR&D.

[2]

In the third quarter of fiscal 2014, the Company recorded a loss of $3.4 million in net loss from continuing operations related to the divestiture of certain assets of its Audio business to Stravelis, Inc.

[3]

In the second quarter of fiscal 2014, the Company recorded a gain of $82.3 million in net income from continuing operations related to the divestiture of its PCI Express enterprise flash controller business to PMC-Sierra, Inc.

[4]

In the fourth quarter of fiscal 2013, the Company recorded a gain of $8.0 million in net income from continuing operations related to the divestiture of its smart meter business.

[5]

Revenues from the customers in the U.S. were $63.1 million, $69.6 million and $70.4 million in fiscal 2014, 2013 and 2012, respectively.

Segment_Reporting_by_Geographi

Segment Reporting by Geographic Areas (Details 3) (USD $)	Mar. 30, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Segment Reporting Information [Line Items]	'	'
Total property, plant and equipment, net	$69,827	$74,988
United States	'	'
Segment Reporting Information [Line Items]	'	'
Long-lived assets	40,561	44,651
Canada	'	'
Segment Reporting Information [Line Items]	'	'
Long-lived assets	4,660	5,188
Malaysia	'	'
Segment Reporting Information [Line Items]	'	'
Long-lived assets	20,972	21,379
All other countries	'	'
Segment Reporting Information [Line Items]	'	'
Long-lived assets	$3,634	$3,770

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Details) (Foreign Exchange Contract, USD $)	Mar. 30, 2014
In Millions, unless otherwise specified
Foreign Exchange Contract	'
Derivatives, Fair Value [Line Items]	'
Foreign exchange facility available capacity	$20

Credit_Facility_Details

Credit Facility (Details) (Bank of America, USD $)	12 Months Ended	0 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 30, 2014	Jun. 13, 2011	Jun. 13, 2011
		The Subsidiary	Maximum
		Class A Preferred Share	The Subsidiary
			Class A Preferred Share
Line of Credit Facility [Line Items]	'	'	'
Maximum number of shares to be sold (shares)	'	'	1,431
Proceeds from issuance of preferred shares	'	$135	'
Amortization of financing costs	$2.50	'	'

SUPPLEMENTARY_FINANCIAL_INFORM2

SUPPLEMENTARY FINANCIAL INFORMATION (UNAUDITED) (Details) (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]	'		'		'		'	'		'	'	'	'	'	'
Revenues	$118,640	[1]	$124,628	[2]	$124,047	[3]	$117,464	$107,779	[4]	$114,277	$132,441	$129,955	$484,779	$484,452	$526,696
Gross profit	61,080	[1]	74,939	[2]	70,761	[3]	66,122	59,523	[4]	63,074	74,459	72,668	272,902	269,724	280,506
Net income from continuing operations	5,062	[1]	17,339	[2]	87,411	[3]	1,501	-5,469	[4]	-106	4,656	3,630	111,313	2,711	37,953
Net loss from discontinued operations	-5,033	[1]	-10,391	[2]	-3,760	[3]	-3,765	-5,158	[4]	-5,051	-4,729	-7,945	-22,949	-22,883	20,507
Net income (loss)	$29	[1]	$6,948	[2]	$83,651	[3]	($2,264)	($10,627)	[4]	($5,157)	($73)	($4,315)	$88,364	($20,172)	$58,460
Basic net income per share - continuing operations (in dollars per share)	$0.03	[1]	$0.11	[2]	$0.58	[3]	$0.01	($0.04)	[4]	$0	$0.03	$0.03	$0.74	$0.02	$0.26
Basic net income (loss) per share - discontinued operations (in dollars per share)	($0.03)	[1]	($0.06)	[2]	($0.02)	[3]	($0.03)	($0.03)	[4]	($0.04)	($0.03)	($0.06)	($0.15)	($0.16)	$0.15
Basic net income per share (in dollars per share)	$0	[1]	$0.05	[2]	$0.56	[3]	($0.02)	($0.07)	[4]	($0.04)	$0	($0.03)	$0.59	($0.14)	$0.41
Diluted net income per share - continuing operations (in dollars per share)	$0.03	[1]	$0.11	[2]	$0.57	[3]	$0.01	($0.04)	[4]	$0	$0.03	$0.03	$0.73	$0.02	$0.26
Diluted net income (loss) per share - discontinued operations (in dollars per share)	($0.03)	[1]	($0.07)	[2]	($0.03)	[3]	($0.03)	($0.03)	[4]	($0.04)	($0.03)	($0.06)	($0.15)	($0.16)	$0.14
Diluted net income per share (in dollars per share)	$0	[1]	$0.04	[2]	$0.54	[3]	($0.02)	($0.07)	[4]	($0.04)	$0	($0.03)	$0.58	($0.14)	$0.40
[1]	In the fourth quarter of fiscal 2014, associated with the decision to discontinue production and sale of products using technology attained through the acquisitions of Mobius Microsystems in fiscal 2010 and IKOR in fiscal 2011, the Company recorded an additional $8.7 million in accelerated amortization of intangible assets which was charged to cost of revenues. In addition, the Company recorded a $2.4 million impairment of IPR&D to research and development expense, associated with the decision to discontinue further development required to complete the Mobius Microsystems acquired IPR&D.
[2]	In the third quarter of fiscal 2014, the Company recorded a loss of $3.4 million in net loss from continuing operations related to the divestiture of certain assets of its Audio business to Stravelis, Inc.
[3]	In the second quarter of fiscal 2014, the Company recorded a gain of $82.3 million in net income from continuing operations related to the divestiture of its PCI Express enterprise flash controller business to PMC-Sierra, Inc.
[4]	In the fourth quarter of fiscal 2013, the Company recorded a gain of $8.0 million in net income from continuing operations related to the divestiture of its smart meter business.

SUPPLEMENTARY_FINANCIAL_INFORM3

SUPPLEMENTARY FINANCIAL INFORMATION (UNAUDITED) (Details Textual) (USD $)	12 Months Ended			0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012	Jul. 12, 2013	Sep. 29, 2013	Dec. 13, 2013	Dec. 29, 2013	Mar. 07, 2013	Mar. 31, 2013	Mar. 30, 2014	Mar. 30, 2014
				PCI Express	PCI Express	Assets of Audio Business	Assets of Audio Business	Smart Meter business	Smart Meter business	IPR&D	IPR&D
										Cost of revenue	Research and development
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Gain (loss) on divestiture	'	'	'	$82,349,000	$82,300,000	($3,716,000)	$3,400,000	$7,986,000	$8,000,000	'	'
Amortization of intangible assets	24,793,000	20,546,000	16,489,000	'	'	'	'	'	'	8,700,000	'
Impairment of intangible assets	'	'	'	'	'	'	'	'	'	'	$2,400,000

Valuation_and_Qualifying_Accou1

Valuation and Qualifying Accounts (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Allowance for returns, pricing credits and doubtful accounts	'	'	'
Valuation and Qualifying Accounts Disclosure [Line Items]	'	'	'
Balance at Beginning of Period	$2,787	$3,009	$4,568
Additions Charged (Credited) to Revenues, Costs and Expenses	657	134	-772
Charged (Credited) to Other Accounts	0	0	124
Deductions and Write-offs	-310	-356	-911
Balance at End of Period	3,134	2,787	3,009
Tax valuation allowance	'	'	'
Valuation and Qualifying Accounts Disclosure [Line Items]	'	'	'
Balance at Beginning of Period	134,633	131,731	125,760
Additions Charged (Credited) to Revenues, Costs and Expenses	30,110	34,171	22,508
Charged (Credited) to Other Accounts	0	0	0
Deductions and Write-offs	-21,039	-31,269	-16,537
Balance at End of Period	$143,704	$134,633	$131,731