RF Micro Devices (RFMD) 10-K 21 May 14 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Mar. 29, 2014	9-May-14	Sep. 28, 2013
Document and Entity Information [Abstract]	'	'	'
Entity Registrant Name	'RF MICRO DEVICES INC	'	'
Entity Central Index Key	'0000911160	'	'
Document Type	'10-K	'	'
Document Period End Date	29-Mar-14	'	'
Amendment Flag	'false	'	'
Document Fiscal Year Focus	'2014	'	'
Document Fiscal Period Focus	'FY	'	'
Current Fiscal Year End Date	'--03-29	'	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Public Float	'	'	$1,594,903,268
Entity Common Stock, Shares Outstanding	'	286,149,524	'

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 29, 2014	Mar. 30, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$171,898	$101,662
Short-term investments (Notes 1 & 3)	72,067	77,987
Accounts receivable, less allowance of $313 and $434 as of March 29, 2014 and March 30, 2013, respectively	137,417	143,647
Inventories (Notes 1 & 4)	125,703	161,193
Prepaid expenses	12,721	13,034
Other receivables (Note 1)	13,181	16,233
Other current assets (Note 13)	4,431	2,481
Total current assets	537,418	516,237
Property and equipment:	'	'
Land	3,706	3,706
Building	94,929	95,655
Machinery and equipment	547,991	517,413
Leasehold improvements	45,464	45,788
Furniture and fixtures	10,753	10,814
Computer equipment and software	35,782	33,147
Property, plant and equipment, gross, total	738,625	706,523
Less accumulated depreciation	-552,901	-538,494
Property and equipment net, excluding construction in progress	185,724	168,029
Construction in progress	10,272	23,497
Total property and equipment, net	195,996	191,526
Goodwill (Notes 1, 5, 6 & 8)	103,901	104,846
Intangible assets, net (Notes 1 & 8)	54,990	93,197
Long-term investments (Notes 1 & 3)	3,841	4,281
Other non-current assets (Notes 1 & 13)	24,166	21,912
Total assets	920,312	931,999
Current liabilities:	'	'
Accounts payable	79,783	123,468
Accrued liabilities	51,824	55,760
Current portion of long-term debt, net of unamortized discount (Note 9)	87,263	0
Other current liabilities (Notes 11 & 13)	1,103	6,486
Total current liabilities	219,973	185,714
Long-term debt, net of unamortized discount (Note 9)	0	82,035
Other long-term liabilities (Notes 10, 11, 12 & 13)	23,988	25,236
Total liabilities	243,961	292,985
Commitments and contingent liabilities (Note 11)	'	'
Shareholders’ equity:	'	'
Preferred stock, no par value; 5,000 shares authorized; no shares issued and outstanding	'	'
Common stock, no par value; 500,000 shares authorized; 284,858 and 280,160 shares issued and outstanding at March 29, 2014 and March 30, 2013, respectively	1,284,402	1,259,420
Accumulated other comprehensive loss, net of tax	-785	-498
Accumulated deficit	-607,266	-619,908
Total shareholders’ equity	676,351	639,014
Total liabilities and shareholders’ equity	$920,312	$931,999

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 29, 2014	Mar. 30, 2013
In Thousands, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Allowance for accounts receivable	$313	$434
Preferred stock, par value	'	'
Preferred stock, shares authorized	5,000	5,000
Preferred stock, shares issued	'	'
Preferred stock, shares outstanding	'	'
Common stock, par value	'	'
Common stock, shares authorized	500,000	500,000
Common stock, shares issued	284,858	280,160
Common stock, shares outstanding	284,858	280,160

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Income Statement [Abstract]	'	'	'
Revenue	$1,148,231	$964,147	$871,352
Cost of goods sold	743,304	658,332	582,586
Gross profit	404,927	305,815	288,766
Operating expenses:	'	'	'
Research and development	197,269	178,793	151,697
Marketing and selling	74,672	68,674	63,217
General and administrative	76,732	64,242	50,107
Other operating expense (income) (Notes 5, 6, 8 & 12)	28,913	9,786	-898
Total operating expenses	377,586	321,495	264,123
Income (loss) from operations	27,341	-15,680	24,643
Interest expense	-5,983	-6,532	-10,997
Interest income	179	249	468
Loss on retirement of convertible subordinated notes (Note 9)	0	-2,756	-908
Other income (expense)	2,336	-1,180	2,422
Income (loss) before income taxes	23,873	-25,899	15,628
Income tax expense (Note 13)	-11,231	-27,100	-14,771
Net income (loss)	$12,642	($52,999)	$857
Net income (loss) per share (Note 14):	'	'	'
Basic	$0.04	($0.19)	$0
Diluted	$0.04	($0.19)	$0
Shares used in per share calculation (Note 14):	'	'	'
Basic	281,996	278,602	276,289
Diluted	288,074	278,602	282,576

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Loss) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Statement of Comprehensive Income [Abstract]	'	'	'
Net income (loss)	$12,642	($52,999)	$857
Other comprehensive loss:	'	'	'
Unrealized gain (loss) on marketable securities, net of tax	3	33	-68
Change in pension liability	-348	-124	-511
Foreign currency translation adjustment, including intra-entity foreign currency transactions that are of a long-term-investment nature	55	-250	33
Reclassification adjustments, net of tax:	'	'	'
Recognized loss on marketable securities	0	4	0
Amortization of pension actuarial loss (gain)	3	0	-8
Other comprehensive loss	-287	-337	-554
Total comprehensive income (loss)	$12,355	($53,336)	$303

Consolidated_Statements_of_Sha

Consolidated Statements of Shareholders' Equity (USD $)	Total	Common Stock	Accumulated Other Comprehensive (Loss) Income	Accumulated Deficit
In Thousands
Beginning Balance at Apr. 02, 2011	$676,355	$1,243,728	$393	($567,766)
Beginning Balance, Shares at Apr. 02, 2011	'	275,376	'	'
Net income (loss)	857	'	'	857
Other comprehensive loss	-554	'	-554	'
Repurchase of convertible subordinated notes, net of tax	-1,777	-1,777	'	'
Exercise of stock options and vesting of restricted stock units, net of shares withheld for employee taxes	-2,232	-2,232	'	'
Exercise of stock options and vesting of restricted stock units, net of shares withheld for employee taxes, Shares	'	5,699	'	'
Issuance of common stock in connection with employee stock purchase plan	3,855	3,855	'	'
Issuance of common stock in connection with employee stock purchase plan, Shares	'	820	'	'
Repurchase of common stock, including transaction costs	-30,373	-30,373	'	'
Repurchase of common stock, including transaction costs, Shares	-4,900	-4,903	'	'
Share-based compensation expense	26,200	26,200	'	'
Ending Balance at Mar. 31, 2012	672,331	1,239,401	-161	-566,909
Ending Balance, Shares at Mar. 31, 2012	'	276,992	'	'
Net income (loss)	-52,999	'	'	-52,999
Other comprehensive loss	-337	'	-337	'
Repurchase of convertible subordinated notes, net of tax	-1,251	-1,251	'	'
Exercise of stock options and vesting of restricted stock units, net of shares withheld for employee taxes	-5,736	-5,736	'	'
Exercise of stock options and vesting of restricted stock units, net of shares withheld for employee taxes, Shares	'	4,028	'	'
Issuance of common stock in connection with employee stock purchase plan	3,348	3,348	'	'
Issuance of common stock in connection with employee stock purchase plan, Shares	'	999	'	'
Repurchase of common stock, including transaction costs	-6,999	-6,999	'	'
Repurchase of common stock, including transaction costs, Shares	-1,900	-1,859	'	'
Share-based compensation expense	30,657	30,657	'	'
Ending Balance at Mar. 30, 2013	639,014	1,259,420	-498	-619,908
Ending Balance, Shares at Mar. 30, 2013	280,160	280,160	'	'
Net income (loss)	12,642	'	'	12,642
Other comprehensive loss	-287	'	-287	'
Exercise of stock options and vesting of restricted stock units, net of shares withheld for employee taxes	3,326	3,326	'	'
Exercise of stock options and vesting of restricted stock units, net of shares withheld for employee taxes, Shares	'	6,246	'	'
Issuance of common stock in connection with employee stock purchase plan	4,617	4,617	'	'
Issuance of common stock in connection with employee stock purchase plan, Shares	'	987	'	'
Repurchase of common stock, including transaction costs	-12,780	-12,780	'	'
Repurchase of common stock, including transaction costs, Shares	-2,500	-2,535	'	'
Share-based compensation expense	29,819	29,819	'	'
Ending Balance at Mar. 29, 2014	$676,351	$1,284,402	($785)	($607,266)
Ending Balance, Shares at Mar. 29, 2014	284,858	284,858	'	'

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Cash flows from operating activities:	'	'	'
Net income (loss)	$12,642	($52,999)	$857
Adjustments to reconcile net income (loss) to net cash provided by operating activities:	'	'	'
Depreciation	45,698	49,357	57,949
Intangible amortization	28,638	23,107	18,390
Non-cash interest expense and amortization of debt issuance costs	5,101	5,793	9,378
Investment discount amortization, net	-40	-101	-219
Excess tax benefit from exercises of stock options	-50	0	0
Deferred income taxes	441	16,796	4,283
Foreign currency adjustments	-507	10	-507
Loss on retirement of convertible subordinated notes	0	2,756	908
(Income) loss from equity investment (Note 1)	-2,146	44	-1,631
Loss on impairment of intangible assets (Note 12)	11,300	0	0
Loss (gain) on assets and other, net	3,184	4,342	-1,256
Share-based compensation expense	29,901	30,819	26,174
Changes in operating assets and liabilities:	'	'	'
Accounts receivable, net	6,160	-38,400	19,847
Inventories	35,266	-19,071	19,466
Prepaid expense and other current and non-current assets	-1,543	-537	-11,321
Accounts payable	-43,393	46,821	-21,375
Accrued liabilities	4,825	-815	1,399
Income tax payable/recoverable	-4,653	960	6,178
Other liabilities	25	2,370	-4,307
Net cash provided by operating activities	130,849	71,252	124,213
Investing activities:	'	'	'
Purchase of securities available-for-sale	-125,037	-89,959	-205,849
Proceeds from maturities of securities available-for-sale	130,999	176,975	201,001
Proceeds from the sale of equity investment	2,586	0	0
Purchase of business, net of cash acquired	0	-47,697	0
Purchase of intangibles	-1,327	0	0
Purchase of property and equipment	-66,753	-54,636	-46,051
Proceeds from sale of property and equipment	2,499	840	984
Net cash used in investing activities	-57,033	-14,477	-49,915
Financing activities:	'	'	'
Payment of debt	0	-79,432	-41,853
Excess tax benefit from exercises of stock options	50	0	0
Debt issuance cost	-122	-1,240	0
Proceeds from the issuance of common stock	17,480	3,988	11,285
Repurchase of common stock, including transaction costs	-12,780	-6,999	-30,373
Tax withholding paid on behalf of employees for restricted stock units	-9,113	-5,959	-9,658
Restricted cash associated with financing activities	305	34	267
Repayment of capital lease obligations	-65	-62	-57
Net cash used in financing activities	-4,245	-89,670	-70,389
Effect of exchange rate changes on cash	665	-967	-145
Net increase (decrease) in cash and cash equivalents	70,236	-33,862	3,764
Cash and cash equivalents at the beginning of the period	101,662	135,524	131,760
Cash and cash equivalents at the end of the period	171,898	101,662	135,524
Supplemental disclosure of cash flow information:	'	'	'
Cash paid during the year for interest	1,205	1,409	2,315
Cash paid during the year for income taxes	$15,350	$8,941	$14,554

The_Company_and_Its_Significan

The Company and Its Significant Accounting Policies	12 Months Ended
	Mar. 29, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
THE COMPANY AND ITS SIGNIFICANT ACCOUNTING POLICIES	'
	THE COMPANY AND ITS SIGNIFICANT ACCOUNTING POLICIES
	RF Micro Devices, Inc. (the "Company") was incorporated under the laws of the State of North Carolina in 1991. The Company is a global leader in the design and manufacture of high-performance radio frequency (RF) solutions. The Company’s products enable worldwide mobility, provide enhanced connectivity, and support advanced functionality in the mobile device, wireless infrastructure, wireless local area network (WLAN or WiFi), cable television (CATV)/broadband, Smart Energy/advanced metering infrastructure (AMI), and aerospace and defense markets. The Company is recognized for its diverse portfolio of semiconductor technologies and RF systems expertise and is a preferred supplier to the world's leading mobile device, customer premises and communications equipment providers. The Company’s design and manufacturing expertise encompasses all major applicable semiconductor process technologies, which are sourced through both internal and external suppliers. The Company’s broad design and manufacturing resources enable the Company to deliver products optimized for customers’ performance, cost and time-to-market requirements.
	Principles of Consolidation
	The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation.
	The results of operations, assets and liabilities associated with the acquisition of Amalfi Semiconductor, Inc. (“Amalfi”) completed during fiscal 2013 have been included in the Consolidated Statements of Operations from the acquisition date (November 9, 2012) and are reflected in the Consolidated Balance Sheet as of March 30, 2013 (see Note 5).
	During the fourth quarter of fiscal 2014, the Company sold a portion of an equity method investment for $2.6 million which resulted in a gain of $1.5 million. As of March 29, 2014 and March 30, 2013, the carrying value of the equity investment is $1.7 million and $2.1 million, respectively. The investment is recorded in “Long-term investments” in the Consolidated Balance Sheets. The Company purchased raw materials from its equity investee totaling approximately $6.6 million, $7.0 million and $9.2 million, for fiscal years 2014, 2013 and 2012, respectively.
	Accounting Periods
	The Company uses a 52- or 53-week fiscal year ending on the Saturday closest to March 31 of each year. The most recent three fiscal years ended on March 29, 2014, March 30, 2013, and March 31, 2012. Fiscal years 2014, 2013 and 2012 were 52-week years.
	Fair Value of Financial Instruments
	The carrying values of cash and cash equivalents, accounts receivable, accounts payable and other accrued liabilities approximate fair values as of March 29, 2014 and March 30, 2013 (see Note 3 and Note 9).
	Use of Estimates
	The preparation of the Consolidated Financial Statements in conformity with accounting principles generally accepted in the U.S. requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. The actual results that we experience may differ materially from our estimates. The Company makes estimates for the returns reserve, rebates, allowance for doubtful accounts, inventory valuation including reserves, warranty reserves, income tax valuation, current and deferred income taxes, uncertain tax positions, non-marketable equity investments, other-than-temporary impairments of investments, goodwill, long-lived assets and other financial statement amounts on a regular basis and makes adjustments based on historical experiences and expected future conditions. Accounting estimates require difficult and subjective judgments and actual results may differ from the Company’s estimates.
	Cash and Cash Equivalents
	Cash and cash equivalents consist of demand deposit accounts, money market funds, and other temporary, highly- liquid investments with original maturities of three months or less when purchased.
	Investments
	Investments are accounted for in accordance with FASB ASC 320, “Investments – Debt and Equity Securities.”
	Available-for-Sale Investments
	Investments available-for-sale at March 29, 2014, and March 30, 2013, consisted of U.S. government/agency securities and auction rate securities.  Available-for-sale investments with an original maturity date greater than approximately three months and less than one year are classified as current investments. Available-for-sale investments with an original maturity date exceeding one year are classified as long-term.
	Available-for-sale securities are carried at fair value as determined by quoted market prices, with the unrealized gains and losses, net of tax, reported in "Other comprehensive (loss) income."  The cost of securities sold is based on the specific identification method and any realized gain or loss is included in “Other income (expense).”  The amortized cost of available-for-sale securities is adjusted for amortization of premium and accretion of discounts, which are included as a portion of interest.
	The Company assesses individual investments for impairment quarterly.  Investments are impaired when the fair value is less than the amortized cost.  If an investment is impaired, the Company evaluates whether the impairment is other-than-temporary.  A debt investment impairment is considered other-than-temporary if (i) the Company intends to sell the security, (ii) it is more likely than not that the Company will be required to sell the security before recovery of the entire amortized cost basis, or (iii) the Company does not expect to recover the entire amortized cost basis of the security (a credit loss).  Other-than-temporary declines in the Company's debt securities are recognized as a loss in the statement of operations if due to credit loss; all other losses on debt securities are recorded in "Other comprehensive (loss) income."  The previous amortized cost basis less the other-than-temporary impairment becomes the new cost basis and is not adjusted for subsequent recoveries in fair value.
	Inventories
	Inventories are stated at the lower of cost or market determined using the average cost method. The Company’s business is subject to the risk of technological and design changes. The Company evaluates inventory levels quarterly against sales forecasts on a product family basis to evaluate its overall inventory risk. Reserves are adjusted to reflect inventory values in excess of forecasted sales which include management's analysis and assessment of overall inventory risk. In the event the Company sells inventory that had been covered by a specific inventory reserve, the sale is recorded at the actual selling price and the related cost of goods sold is recorded at the full inventory cost, net of the reserve. Abnormal production levels are charged to the income statement in the period incurred rather than as a portion of inventory cost.
	Product Warranty
	The Company generally sells products with a limited warranty on product quality. The Company accrues for known warranty issues if a loss is probable and can be reasonably estimated, and accrues for estimated incurred but unidentified issues based on historical activity. The accrual and the related expense for known product warranty issues were not significant during the periods presented. Due to product testing and the short time typically between product shipment and the detection and correction of product failures and the historical rate of losses, the accrual and related expense for estimated incurred but unidentified issues were not significant during the periods presented.
	Property and Equipment
	Property and equipment are stated at cost, less accumulated depreciation. Depreciation of property and equipment is computed using the straight-line method over the estimated useful lives of the assets, ranging from one year to 20 years. The Company’s assets acquired under capital leases and leasehold improvements are amortized over the lesser of the asset life or lease term (which is reasonably assured) and included in depreciation.
	The Company performs a review if facts and circumstances indicate that the carrying amount of assets may not be recoverable or that the useful life is shorter than had originally been estimated. The Company assesses the recoverability of the assets held for use by comparing the projected undiscounted net cash flows associated with the related asset or group of assets over their remaining estimated useful lives against their respective carrying amounts. Impairment, if any, is based on the excess of the carrying amount over the fair value of those assets. If the Company determines that the useful lives are shorter than the Company had originally estimated, the net book value of the assets is depreciated over the newly determined remaining useful lives. The Company identifies property and equipment as “held for sale” based on the current expectation that, more likely than not, an asset or asset group will be sold or otherwise disposed. The held for sale assets cease depreciation once the assets are classified to the held for sale category at their fair market value less costs to sell.
	The Company capitalizes the portion of the interest expense related to certain assets that are not ready for their intended use and this amount is depreciated over the estimated useful lives of the qualified assets. The Company additionally records capital-related government grants earned as a reduction to property and equipment and depreciates such grants over the estimated useful lives of the associated assets.
	Other Receivables
	The Company records miscellaneous non-product receivables that are collectible within 12 months in “Other receivables,” such as value-added tax receivables ($10.1 million as of March 29, 2014 and $13.9 million as of March 30, 2013, which are reported on a net basis), interest receivables and other miscellaneous items.
	Goodwill and Intangible Assets
	The value of the Company’s goodwill and purchased intangible assets could be impacted by future adverse changes such as: (i) future declines in RFMD’s operating results, (ii) a decline in the value of technology company stocks, including the value of RFMD’s common stock, (iii) a prolonged or more significant slowdown in the worldwide economy or the semiconductor industry, or (iv) failure to meet the performance projections included in RFMD’s forecasts of future operating results.
	Goodwill
	The Company has determined that its reporting units at the fiscal 2014 annual measurement date were CPG, MPG and CSG for purposes of allocating and testing goodwill. In evaluating its reporting units, the Company first considers its operating segments and related components in accordance with FASB guidance. Goodwill is allocated to the reporting units that are expected to benefit from the synergies of the business combinations generating the underlying goodwill. As of March 29, 2014, $93.6 million of the Company’s goodwill balance is allocated to the MPG reporting unit and $10.3 million is allocated to the CPG reporting unit.
	Goodwill is recorded when the purchase price paid for a business exceeds the estimated fair value of the net identified tangible and intangible assets acquired. The Company evaluates its goodwill for potential impairment on an annual basis on the first day of the fourth quarter in each fiscal year, or more frequently if events or circumstances indicate that an impairment in the value of goodwill recorded on the Company's balance sheet may exist. In fiscal 2013, the Company adopted FASB ASU 2011-08 "Intangibles - Goodwill and Other (Topic 350): Testing Goodwill for Impairment," which provides entities with an option to perform a qualitative assessment (commonly referred to as "step zero") to determine whether further quantitative analysis for impairment of goodwill is necessary. In performing step zero for the goodwill impairment test, the Company is required to make assumptions and judgments including but not limited to the following: the evaluation of macroeconomic conditions as related to the Company's business, industry and market trends, and the overall future financial performance of the Company's reporting units and future opportunities in the markets in which the reporting units operate. The Company also considers recent fair value calculations of its reporting units as well as cost factors such as changes in raw materials, labor or other costs. If impairment indicators are present after performing step zero, the Company would perform a quantitative impairment analysis to estimate the fair value of goodwill. In doing so, the Company would estimate future revenue, consider market factors and estimate the Company's future profitability and cash flows. Based on these key assumptions, judgments and estimates, the Company determines whether it needs to record an impairment charge to reduce the value of the goodwill carried on its balance sheet to the estimated fair value. Assumptions, judgments and estimates about future values are complex and often subjective and can be affected by a variety of factors, including external factors such as industry and economic trends, and internal factors such as changes in the Company's business strategy or internal forecasts. Although the Company believes the assumptions, judgments and estimates it has made have been reasonable and appropriate, different assumptions, judgments and estimates could materially affect its results of operations.
	The Company performed a step zero analysis for its goodwill impairment test as of the annual measurement date. As a result of this analysis, no further quantitative impairment test was deemed necessary for fiscal 2014. There was no impairment of goodwill as a result of the Company's annual impairment tests completed during the fourth quarters of fiscal years 2013 and 2012.
	Intangible Assets
	Intangible assets are recorded when such assets are acquired by purchase or license. Finite-lived intangible assets consist primarily of technology licenses, customer relationships, a wafer supply agreement and developed technology resulting from business combinations and are subject to amortization. Indefinite-lived intangible assets consist of in-process research and development (IPRD).
	Technology licenses are recorded at cost and amortized on a straight-line basis over the lesser of the estimated useful life of the technology or the term of the license agreement, ranging from approximately six to 15 years.
	The fair value of customer relationships acquired prior to fiscal 2013 was based on the benefit derived from the incremental revenue and related cash flows as a direct result of the customer relationship. These forecasted cash flows are discounted to present value using an appropriate discount rate. The fair value of customer relationships acquired during fiscal 2013 was determined based on an income approach using the “with and without method," in which the value of the asset is determined by the difference in discounted cash flows of the profitability of the Company "with" the asset and the profitability of the Company "without" the asset. Customer relationships are amortized on a straight-line basis over the estimated useful life, ranging from three to ten years.
	The fair value of developed technology acquired prior to fiscal 2013 was determined by discounting forecasted cash flows directly related to the existing product technology, net of returns on contributory assets. The fair value of developed technology acquired during fiscal 2013 was determined based on an income approach using the "excess earnings method," which estimated the value of the intangible assets by discounting the future projected earnings of the asset to present value as of the valuation date. Developed technology is amortized on a straight-line basis over the estimated useful life of six years.
	The fair value of the wafer supply agreement was determined using the incremental income method, which is a discounted cash flow method within the income approach. Under this method, the fair value was estimated by discounting to present value the additional savings from expense reductions in operations at a discount rate to reflect the risk inherent in the wafer supply agreement as well as any tax benefits. The wafer supply agreement is amortized on a units of use activity method and has a useful life of approximately four years.
	IPRD is recorded at fair value as of the date of acquisition as an indefinite-lived intangible asset until the completion or abandonment of the associated research and development efforts or impairment. The fair value of the acquired IPRD was determined based on an income approach using the "excess earnings method," which estimated the value of the intangible assets by discounting the future projected earnings of the asset to present value as of the valuation date. Upon completion of development, acquired IPRD assets are transferred to finite-lived intangible assets and amortized over their useful lives. See Note 8 for additional information regarding an impairment of IPRD assets recorded in the fourth quarter of fiscal 2014.
	The Company regularly reviews identified intangible assets to determine if facts and circumstances indicate that the useful life is shorter than the Company originally estimated or that the carrying amount of the assets may not be recoverable. If such facts and circumstances exist, the Company assesses the recoverability of identified intangible assets by comparing the projected undiscounted net cash flows associated with the related asset or group of assets over their remaining lives against their respective carrying amounts. Impairments, if any, are based on the excess of the carrying amount over the fair value of those assets and occur in the period in which the impairment determination was made.
	Revenue Recognition
	The Company's net revenue is generated principally from sales of semiconductor products. The Company recognizes revenue from product sales when the fundamental criteria are met, such as the time at which the title and risk and rewards of product ownership are transferred to the customer, price and terms are fixed or determinable, no significant vendor obligation exists and collection of the resulting receivable is reasonably assured. Sales of products are generally made through either the Company's sales force, manufacturers' representatives or through a distribution network. Revenue from the majority of the Company’s products is recognized upon shipment of the product to the customer from a Company-owned or third-party location. Some revenue is recognized upon receipt of the shipment by the customer. The Company has limited rebate programs offering price protection to certain distributors. These rebates represent less than 2% of net revenue and can be reasonably estimated based on specific criteria included in the rebate agreements and other known factors at the time. Reductions in revenue are recorded during the period in which the revenue related to those rebate agreements is recognized.
	The Company also recognizes a portion of its net revenue through other agreements such as non-recurring engineering fees and cost-plus contracts for research and development work, royalty income, intellectual property (IP) revenue, and service revenue. These agreements are collectively less than 1% of consolidated revenue on an annual basis. Revenue from non-recurring engineering fees is recognized when the service is completed or upon certain milestones, as provided for in the agreements. Revenue from cost plus contracts is recognized on the percentage of completion method based on the costs incurred to date and the total contract amount, plus the contractual fee. Royalty income is recognized based on a percentage of sales of the relevant product reported by licensees during the period. The Company additionally licenses or sells its rights to use portions of its IP portfolio, which includes certain patent rights useful in the manufacture and sales of certain products. IP revenue recognition is dependent on the terms of each agreement. The Company will recognize IP revenue (i) upon delivery of the IP and (ii) if the Company has no substantive future obligation to perform under the arrangement. The Company will defer recognition of IP revenue where future performance obligations are required to earn the revenue or the revenue is not guaranteed. Revenue from services is recognized during the period that the service is performed.
	Accounts receivable are recorded for all revenue items listed above. The Company evaluates the collectability of accounts receivable based on a combination of factors. In cases where the Company is aware of circumstances that may impair a specific customer’s ability to meet its financial obligations subsequent to the original sale, the Company will record an allowance against amounts due, and thereby reduce the receivable to the amount the Company reasonably believes will be collected. For all other customers, the Company recognizes allowances for doubtful accounts based on the length of time the receivables are past due, industry and geographic concentrations, the current business environment and the Company’s historical experience.
	The Company's terms and conditions do not give its customers a right of return associated with the original sale of its products. However, the Company will authorize sales returns under certain circumstances, which include perceived quality problems, courtesy returns and like-kind exchanges. The Company evaluates its estimate of returns by analyzing all types of returns and the timing of such returns in relation to the original sale. Reserves are adjusted to reflect changes in the estimated returns versus the original sale of product.
	Shipping and Handling Cost
	The Company recognizes amounts billed to a customer in a sale transaction related to shipping and handling as revenue. The costs incurred by the Company for shipping and handling are classified as cost of goods sold in the Consolidated Statements of Operations.
	Research and Development
	The Company charges all research and development costs to expense as incurred.
	Advertising Costs
	The Company expenses advertising costs as incurred. The Company recognized advertising expense of $0.1 million, $0.4 million, and $0.3 million for fiscal years 2014, 2013 and 2012, respectively.
	Income Taxes
	The Company accounts for income taxes under the liability method which requires recognition of deferred tax assets and liabilities for the temporary differences between the financial reporting and tax basis of assets and liabilities and for tax carryforwards. Deferred tax assets and liabilities are measured using the enacted statutory tax rates in effect for the years in which the differences are expected to reverse. A valuation allowance is provided against deferred tax assets to the extent the Company determines it is more likely than not (a likelihood of more than 50 percent) that some portion or all of its deferred tax assets will not be realized.
	A minimum recognition threshold is required to be met before the Company recognizes the benefit of an income tax position in its financial statements. The Company’s policy is to recognize accrued interest and penalties, if incurred, on any unrecognized tax benefits as a component of income tax expense.
	It is the Company’s policy to invest the earnings of foreign subsidiaries indefinitely outside the U.S. Accordingly, the Company does not provide an allowance for U.S. income taxes on unremitted foreign earnings.
	Share-Based Compensation
	Under FASB ASC 718, “Compensation – Stock Compensation” (ASC 718), share-based compensation cost is measured at the grant date, based on the estimated fair value of the award using an option pricing model (Black-Scholes), and is recognized as expense over the employee's requisite service period.
	As of March 29, 2014, total remaining unearned compensation cost related to nonvested restricted stock units and options was $22.8 million, which will be amortized over the weighted-average remaining service period of approximately 1.2 years.
	Foreign Currency Translation
The financial statements of foreign subsidiaries have been translated into U.S. dollars in accordance with FASB ASC 830, “Foreign Currency Matters.”  The functional currency for most of the Company’s international operations is the U.S. dollar.  The functional currency for the remainder of the Company’s foreign subsidiaries is the local currency. Assets and liabilities denominated in foreign currencies are translated using the exchange rates on the balance sheet dates.  Revenues and expenses are translated using the average exchange rates throughout the year. Translation adjustments are shown separately as a component of “Accumulated other comprehensive (loss) income” within “Shareholders’ equity” in the Consolidated Balance Sheets.  Foreign currency transaction gains or losses (transactions denominated in a currency other than the functional currency) are reported in “Other income (expense)” in the Consolidated Statements of Operations.
Recent Accounting Pronouncements
In July 2013, the FASB issued ASU 2013-11, “Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists” ("ASU 2013-11") ("ASU 2013-11"). ASU 2013-11 requires an unrecognized tax benefit, or a portion of an unrecognized tax benefit, to be presented in the financial statements as a reduction of a deferred tax asset or a tax credit carryforward, excluding certain exceptions. This ASU will be effective for the Company beginning with the first quarter of fiscal 2015 and the Company does not believe that the adoption of this standard will significantly impact its consolidated financial statements.
In February 2013, the FASB issued ASU 2013-02, "Reporting of Amounts Reclassified out of Accumulated Other Comprehensive Income." ASU 2013-02 requires reporting the effect of significant reclassifications out of accumulated other comprehensive income on the respective line items in net income if the amount being reclassified is required to be reclassified in its entirety to net income. For other amounts that are not required to be reclassified in their entirety to net income in the same reporting period, an entity is required to cross-reference other disclosures that provide additional detail about these amounts. The amendments do not change the current requirements for reporting net income or other comprehensive income in the financial statements. The Company adopted this guidance in the first quarter of fiscal 2014. The adoption of this guidance affected the presentation of comprehensive income, but did not impact the Company's financial position, results of operations or cash flows.

Concentrations_of_Credit_Risk

Concentrations of Credit Risk	12 Months Ended
	Mar. 29, 2014
Risks and Uncertainties [Abstract]	'
CONCENTRATIONS OF CREDIT RISK	'
	CONCENTRATIONS OF CREDIT RISK
	The Company’s principal financial instrument subject to potential concentration of credit risk is accounts receivable, which is unsecured. The Company provides an allowance for doubtful accounts equal to estimated losses expected to be incurred in the collection of accounts receivable. The Company has adopted credit policies and standards intended to accommodate industry growth and inherent risk and it believes that credit risks are moderated by the financial stability of its major customers, conservative payment terms and the Company’s strict credit policies.
	Revenue from significant customers, those representing 10% or more of total revenue for the respective periods, is summarized as follows:
		Fiscal Year
		2014	2013	2012
	Samsung Electronics, Co., Ltd. (Samsung)	25%	22%	22%
	Nokia Corporation (Nokia)	N/A	N/A	14%
	In addition, the Company sold its products to another end customer through multiple contract manufacturers, which in the aggregate accounted for approximately 20% of total revenue in fiscal 2014. The majority of the revenue from these customers was from the sale of the Company’s CPG products.
	Samsung accounted for approximately 25% and 29% of the Company's total accounts receivable balance as of March 29, 2014 and March 30, 2013, respectively. Samsung and Nokia collectively accounted for approximately 28% of the Company’s total accounts receivable balance as of March 31, 2012.

Investments_and_Fair_Value_Mea

Investments and Fair Value Measurements	12 Months Ended
	Mar. 29, 2014
Investments and Fair Value Measurements [Abstract]	'
INVESTMENTS AND FAIR VALUE MEASUREMENTS	'
	INVESTMENTS AND FAIR VALUE OF FINANCIAL INSTRUMENTS
	Investments
	The following is a summary of available-for-sale securities as of March 29, 2014 and March 30, 2013 (in thousands):
		Available-for-Sale Securities
		Cost		Gross		Gross			Estimated Fair
				Unrealized		Unrealized			Value
				Gains		Losses
	March 29, 2014
	U.S. government/agency securities	$	133,064	$	1	$	—		$	133,065
	Auction rate securities	2,150		—		—			2,150
	Money market funds	48,800		—		—			48,800
		$	184,014	$	1	$	—		$	184,015
	March 30, 2013
	U.S. government/agency securities	$	77,988	$	3	$	(4	)	$	77,987
	Auction rate securities	2,150		—		—			2,150
	Money market funds	26,328		—		—			26,328
		$	106,466	$	3	$	(4	)	$	106,465
	The estimated fair value of available-for-sale securities was based on the prevailing market values on March 29, 2014 and March 30, 2013. We determine the cost of an investment sold based on the specific identification method.
	The gross realized gains and losses recognized on available-for-sale securities for both fiscal years 2014 and 2013, were insignificant.
	There were no available-for-sale investments in a continuous unrealized loss position for fewer than 12 months as of March 29, 2014. The available-for-sale investments that were in a continuous unrealized loss position for fewer than 12 months as of March 30, 2013 consisted of U.S. government/agency securities with gross unrealized losses of less than $0.1 million and an aggregate fair value of $14.0 million. There were no available-for-sale investments in a continuous unrealized loss position for 12 months or greater as of March 29, 2014 or as of March 30, 2013.
	The amortized cost of investments in debt securities with contractual maturities is as follows (in thousands):
		March 29, 2014				March 30, 2013
		Cost		Estimated		Cost			Estimated
				Fair Value					Fair Value
	Due in less than one year	$	181,864	$	181,865	$	104,316		$	104,315
	Due after ten years	2,150		2,150		2,150			2,150
	Total investments in debt securities	$	184,014	$	184,015	$	106,466		$	106,465
	Fair Value of Financial Instruments
	The Company measures the fair value of its marketable securities, which are comprised of U.S. government/agency securities, auction rate securities (ARS), and money market funds. Marketable securities are reported in cash and cash equivalents, short-term investments and long-term investments on the Company’s Consolidated Balance Sheets and are recorded at fair value and the related unrealized gains and losses are included in "Accumulated other comprehensive loss," a component of Shareholders’ equity, net of tax.
	Recurring Fair Value Measurements
	The fair value of the financial assets measured at fair value on a recurring basis was determined using the following levels of inputs as of March 29, 2014 and March 30, 2013 (in thousands):
		Total		Quoted Prices In		Significant Other
				Active Markets For		Observable Inputs
				Identical Assets		(Level 2)
				(Level 1)
	March 29, 2014
	U.S. government/agency securities	$	133,065	$	133,065	$	—
	Auction rate securities	2,150		—		2,150
	Money market funds	48,800		48,800		—
		$	184,015	$	181,865	$	2,150
	March 30, 2013
	U.S. government/agency securities	$	77,987	$	77,987	$	—
	Auction rate securities	2,150		—		2,150
	Money market funds	26,328		26,328		—
		$	106,465	$	104,315	$	2,150
	ARS are debt instruments with interest rates that reset through periodic short-term auctions. The Company’s Level 2 ARS are valued at par based on quoted prices for identical or similar instruments in markets that are not active. As of March 29, 2014 and March 30, 2013, the Company did not have any Level 3 securities.
	Nonrecurring Fair Value Measurements
	The Company's non-financial assets, such as intangible assets and property and equipment, are measured at fair value when there is an indicator of impairment, and recorded at fair value only when an impairment charge is recognized (see Note 8 for an IPRD impairment recorded in the fourth quarter of fiscal 2014). During the first quarter of fiscal 2014, the Company recorded a $1.7 million impairment of certain property and equipment as a result of the phase out of manufacturing and the then-pending sale of its U.K. manufacturing facility. As of June 29, 2013, the fair value of these impaired assets was estimated to be $0.8 million using a significant Level 3 unobservable input (market valuation approach). The market valuation approach uses prices and other relevant information generated primarily by recent market transactions involving similar or comparable assets, as well as the Company's experience. During the second quarter of fiscal 2014, the Company sold its U.K. manufacturing facility, which resulted in a loss on these impaired assets of $0.6 million.
	The Company did not have any material non-financial assets or liabilities measured at fair value during fiscal 2013, other than assets and liabilities assumed in the business acquisition of Amalfi (see Note 5).
	Other Fair Value Disclosures
	The carrying values of cash and cash equivalents, accounts receivable, accounts payable and other accrued liabilities approximate fair values because of the relatively short-term maturities of these instruments.
	The fair value of the Company’s 2014 Notes is measured using a Level 1 input obtained from the PORTAL Market and is disclosed in Note 9 to the Consolidated Financial Statements.

Inventories

Inventories	12 Months Ended
	Mar. 29, 2014
Inventory Disclosure [Abstract]	'
INVENTORIES	'
	INVENTORIES
	The components of inventories, net of reserves, are as follows (in thousands):
		Fiscal Year
		2014		2013
	Raw materials	$	32,927	$	45,656
	Work in process	51,544		64,108
	Finished goods	41,232		51,429
	Total inventories	$	125,703	$	161,193

Business_Acquisition

Business Acquisition	12 Months Ended
	Mar. 29, 2014
BUSINESS ACQUISITION DISCLOSURE [Abstract]	'
Business Acquisition	'
	BUSINESS ACQUISITION
	On November 9, 2012, the Company completed its acquisition of Amalfi Semiconductor, Inc. ("Amalfi") pursuant to the Agreement and Plan of Merger by and among RFMD, Chameleon Acquisition Corporation, a wholly-owned subsidiary of the Company ("Merger Sub"), Amalfi, and Shareholder Representative Services LLC, solely in its capacity as the escrow representative. On the terms and subject to the conditions set forth in the Agreement and Plan of Merger, the Company acquired 100% of the outstanding equity securities of Amalfi through the merger of Merger Sub with and into Amalfi (the "Merger"). As a result of the Merger, Amalfi, as the surviving corporation, became a wholly-owned subsidiary of the Company. Amalfi is a fabless semiconductor company specializing in cost effective, high performance RF and mixed-signal ICs for the rapidly growing entry-level smartphone market. The Company is leveraging Amalfi's RF CMOS and mixed-signal IC technology to develop a growing portfolio of high-performance RF solutions. The product portfolio is targeted primarily at the entry-level smartphone market, and the Company has successfully shipped products using the technology to a number of customers, including handset manufacturers based in China as well as leading multinational smartphone manufacturers.
	The Company acquired Amalfi for a total purchase price of approximately $48.4 million, net of cash received of $37.6 million (adjusted for working capital adjustments and holdback reserves). The final purchase price was allocated to Amalfi's assets and liabilities based upon fair values as determined by the Company, as follows (in thousands):
	Cash and cash equivalents	$	37,575
	Accounts receivable	4,809
	Inventories	10,660
	Prepaid expenses and other assets	933
	Property and equipment	1,164
	Intangible assets (Note 8)	31,900
	Goodwill	10,254
	Total assets	97,295
	Accounts payable and accrued liabilities	(11,293		)
	Total purchase price	$	86,002
	The measurement period (up to one year from the acquisition date pursuant to Accounting Standards Codification (ASC) Topic 805 "Business Combinations" (ASC 805)) was concluded during the third quarter of fiscal 2014. The $10.3 million allocated to goodwill represents the excess of the purchase price over the fair value of assets acquired and liabilities assumed, which is assigned to the Company's CPG operating segment.
	Amalfi's results of operations, which include revenue of $16.5 million and an operating loss of $9.5 million, are included in the Company’s Consolidated Statements of Operations for the period of November 9, 2012 through March 30, 2013.
	During fiscal 2013, the Company recorded Amalfi acquisition-related costs of approximately $1.5 million as well as approximately $1.3 million of restructuring costs (for employee termination benefits and lease termination costs) in “Other operating expense (income)” on the Consolidated Statements of Operations. In fiscal 2014, the Company recorded immaterial restructuring expenses related to the completion of the restructuring efforts associated with the Amalfi acquisition.
	The following unaudited pro forma consolidated financial information for fiscal years 2013 and 2012, assumes that the Amalfi acquisition, which closed on November 9, 2012, was completed as of April 3, 2011 (in thousands, except per share data):
		Fiscal Year
		2013			2012
	Revenue	$	995,441		$	891,262
	Net loss	(62,114		)	(20,607		)
	Basic net loss per common share	(0.22		)	(0.07		)
	Diluted net loss per common share	(0.22		)	(0.07		)
	Pro forma net loss includes adjustments for amortization expense of acquired intangible assets, acquisition-related costs, a step-up in the value of acquired inventory and property and equipment, and interest expense (income).
	These pro forma results have been prepared for comparative purposes only and do not purport to be indicative of the operating results that would have been achieved had the acquisition actually taken place as of April 3, 2011. In addition, these results are not intended to be a projection of future results and do not reflect synergies that might be achieved from the combined operations.

Asset_Transfer_Transaction

Asset Transfer Transaction	12 Months Ended
	Mar. 29, 2014
Asset Transfer Transaction [Abstract]	'
ASSET TRANSFER TRANSACTION	'
	ASSET TRANSFER TRANSACTION
	During fiscal 2013, the Company entered into an asset transfer agreement with IQE, Inc. ("IQE") under which it transferred its MBE operations (located in Greensboro, N.C.) to IQE. The transaction with IQE was intended to lower the Company’s manufacturing costs, strengthen its supply chain and provide it with access to newly developed wafer starting process technologies. The assets transferred to IQE had a total book value of approximately $24.4 million and included the Company’s leasehold interest in the real property, building and improvements used for the facility and machinery and equipment located in the facility, all of which were written off during the first quarter of fiscal 2013. In addition, the Company wrote-off approximately $1.0 million of MPG-related goodwill as a result of this transaction. The asset transfer agreement contains standard representations, warranties, covenants and indemnities of the parties for transactions of this type.
	In conjunction with the asset transfer agreement, the Company and IQE entered into a wafer supply agreement under which IQE will supply the Company with wafer starting materials. This wafer supply agreement, which is recorded as an intangible asset on the Company’s Consolidated Balance Sheets, provides the Company with competitive wafer pricing through March 31, 2016 (see Note 1). As of March 29, 2014, the Company's minimum purchase commitment related to the wafer supply agreement is approximately $7.2 million.
	Approximately 70 employees at the Company’s MBE facility became employees of IQE as part of the transaction described above. In addition, the lease related to the MBE facility for the real property and related improvements was assumed by IQE. The difference in the value of consideration received and consideration transferred was recorded in “Other operating expense (income)” and reduced the Company’s pre-tax income in the first quarter of fiscal year 2013 by approximately $5.0 million. The Company does not expect to incur any additional material costs related to the disposal of the MBE assets, the assumption of the lease by IQE or the transfer of RFMD employees to IQE.

Merger_Agreement

Merger Agreement	12 Months Ended
	Mar. 29, 2014
Merger Agreement [Abstract]	'
Mergers Agreement [Text Block]	'
	MERGER AGREEMENT
	On February 22, 2014, RFMD and TriQuint entered into an Agreement and Plan of Merger and Reorganization providing for the business combination of RFMD and TriQuint. Acquisition costs (of $3.2 million) and integration costs (of $1.9 million) associated with the proposed merger are being expensed as incurred and are presented in the Condensed Consolidated Statement of Operations as "Other operating expense (income)." Certain fees are contingent on the transaction closing.

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	12 Months Ended
	Mar. 29, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
GOODWILL AND INTANGIBLE ASSETS	'
	GOODWILL AND INTANGIBLE ASSETS
	The changes in the carrying amount of goodwill for fiscal years 2013 and 2014, are as follows (in thousands):
	Balance as of March 31, 2012	$	95,628
	Amalfi acquisition (Note 5)	10,191
	Written off due to transfer of MBE operations (Note 6)	(973		)
	Balance as of March 30, 2013	$	104,846
	Written off due to sale of the U.K. facility	(1,008		)
	Amalfi acquisition adjustments (Note 5)	63
	Balance as of March 29, 2014*	$	103,901
	*As of March 29, 2014, the Company’s goodwill balance of $103.9 million was comprised of gross goodwill of $725.5 million less accumulated impairment losses of $619.6 million, a write-off of $1.0 million due to the transfer of the MBE operations, and a write-off of $1.0 million due to the sale of the U.K. facility.
	During the second quarter of fiscal 2014, the Company sold its gallium arsenide (GaAs) semiconductor manufacturing facility located in the U.K. to Compound Photonics. As a result of this transaction, the Company wrote-off approximately $1.0 million of MPG-related goodwill.
	Goodwill is allocated to the reporting units that are expected to benefit from the synergies of the business combinations generating the underlying goodwill. As of March 29, 2014, $93.6 million and $10.3 million of the Company’s goodwill balance was allocated to its MPG reporting unit and CPG reporting unit, respectively. The Company conducts its annual goodwill impairment test on the first day of the fourth quarter in each fiscal year at its reporting unit level (CPG, MPG and CSG) and based on the Company’s fiscal 2014 and fiscal 2013 annual impairment reviews of goodwill, no impairment was indicated, as the estimated fair value of MPG and CPG exceeded its carrying value.
	As of March 29, 2014, approximately $1.7 million of net goodwill related to the 2008 acquisition of Sirenza Microdevices, Inc. ("Sirenza") is expected to be deductible for income tax purposes in future periods.
	The following summarizes certain information regarding gross carrying amounts and amortization of intangibles (in thousands):
		March 29, 2014					March 30, 2013
		Gross			Accumulated		Gross		Accumulated
		Carrying			Amortization		Carrying		Amortization
		Amount					Amount
	Intangible Assets:
	Technology licenses	$	12,006		$	10,418	$	10,346	$	10,118
	Customer relationships	47,103			26,391		47,103		21,644
	Developed technology	102,163			78,540		102,163		61,907
	Wafer supply agreement	20,443			11,376		20,443		4,489
	In-process research and development	—			—		11,300		—
	Total	$	181,715		$	126,725	$	191,355	$	98,158
	In fiscal 2013, as a result of the acquisition of Amalfi, intangibles increased by $31.9 million. The following table sets forth the components of these intangible assets (in thousands):
		Fair Value
	Developed technology	$	19,200
	Customer relationships	1,400
	In-process research and development	11,300
	Total	$	31,900
	In the fourth quarter of fiscal 2014, the Company initiated a restructuring effort to reduce operating expenses (see Note 12 for further information on the restructuring). As part of this restructuring, the Company discontinued engineering efforts on the in-process research and development project and an impairment charge of $11.3 million was recorded in "Other operating expense (income)." This CPG-related IPRD was acquired as part of the Amalfi acquisition.
	During the first quarter of fiscal 2013, the Company entered into a wafer supply agreement under which IQE is supplying the Company with wafer starting materials. This wafer supply agreement provides the Company with competitive wafer pricing through March 31, 2016 (see Note 6).
	Intangible asset amortization expense was $28.6 million, $23.1 million and $18.4 million in fiscal years 2014, 2013 and 2012, respectively. The following table provides the Company's estimated future amortization expense based on current amortization periods for the periods indicated (in thousands):
	Fiscal Year	Estimated
		Amortization
		Expense
	2015	$	22,533
	2016	11,964
	2017	8,367
	2018	7,664
	2019	4,904

Debt

Debt	12 Months Ended
	Mar. 29, 2014
Debt Disclosure [Abstract]	'
DEBT	'
	DEBT
	Debt at March 29, 2014 and March 30, 2013 is as follows (in thousands):
		March 29, 2014				March 30, 2013
	Convertible subordinated notes due 2014, net of discount	$	87,263			$	82,035
	Total debt	87,263				82,035
	Less current portion	87,263				—
	Total long-term debt	$	—			$	82,035
	Convertible Debt
	In April 2007, the Company issued $200 million aggregate principal amount of 0.75% convertible subordinated notes due 2012 (the “2012 Notes”) and $175 million aggregate principal amount of 1.00% convertible subordinated notes due 2014 (the “2014 Notes” and, together with the 2012 Notes, the “Notes”). The Notes were issued in a private placement to Merrill Lynch, Pierce, Fenner & Smith Incorporated for resale to qualified institutional buyers. Offering expenses in connection with the issuance of the Notes, including discounts and commissions, were approximately $8.8 million, which are being amortized as interest expense over the terms of the Notes based on the effective interest method.
	The 2012 Notes became due on April 15, 2012 and the remaining balance of $26.5 million was paid with cash on hand. Holders had the right to convert the 2014 Notes based on the applicable conversion rate of 124.2969 shares of the Company’s common stock per $1,000 principal amount of the notes (which is equal to an initial conversion price of approximately $8.05 per share), subject to adjustment, only under certain specified circumstances. The 2014 Notes became due on April 15, 2014, and the remaining principal balance of $87.5 million plus interest of $0.4 million was paid with cash on hand. Accordingly, the 2014 Notes are recorded in "Current portion of long term debt" on the Consolidated Balance Sheet as of March 29, 2014. Interest on the 2014 Notes was payable in cash semiannually in arrears on April 15 and October 15 of each year. The 2014 Notes were subordinated unsecured obligations of the Company and ranked junior in right of payment to all of the Company’s existing and future senior debt. The 2014 Notes effectively were subordinated to the indebtedness and other liabilities of the Company’s subsidiaries.
	During fiscal 2013, the Company purchased and retired $47.4 million original principal amount of its 2014 Notes for an average price of $98.34, which resulted in a loss of $2.8 million. During fiscal 2012, the Company purchased and retired $35.8 million aggregate principal amount of its 2012 Notes for an average price of $103.27, which resulted in a loss of approximately $0.9 million. In accordance with FASB ASC 470-20, “Debt – Debt with Conversions and Other Options” (ASC 470-20), the Company records gains and losses on the early retirement of its 2012 Notes and 2014 Notes in the period of derecognition, depending on whether the fair market value at the time of derecognition was greater than, or less than, the carrying value of the debt.
	As of March 29, 2014, the 2014 Notes had a fair value on the PORTAL Market of $88.7 million, compared to a carrying value of $87.3 million. As of March 30, 2013, the 2014 Notes had a fair value on the PORTAL Market of $86.7 million, compared to a carrying value of $82.0 million.
	The following tables provide additional information about the Notes, which are subject to ASC 470-20 (in thousands):
		2012 Notes								2014 Notes
		2014				2013				2014				2013
	Carrying amount of the equity component (common stock)	$	19,954		*	$	19,954		*	$	33,241			$	33,241
	Principal amount of the convertible subordinated notes	$	—			$	—			$	87,503			$	87,503
	Unamortized discount of the liability	—				—				(240		)		(5,468		)
	component
	Net carrying amount of liability component	$	—			$	—			$	87,263			$	82,035
	* The 2012 Notes became due and were repaid on April 15, 2012. The carrying amount of the equity component, which is recorded in common stock on the Company's Consolidated Balance Sheets is a permanent component of equity per ASC 470-20.
			2012 Notes								2014 Notes
			2013				2012				2014				2013			2012
	Effective interest rate on liability component		7.3		%		7.3		%		7.2		%		7.2		%	7.2		%
	Cash interest expense recognized		$	11			$	285			$	873			$	1,023		$	1,342
	Non-cash interest expense recognized (discount amortization)		$	69			$	2,372			$	5,228			$	5,688		$	6,958
	As of March 29, 2014, the unamortized discount will be fully amortized for the 2014 Notes. As of March 29, 2014, the if-converted value of the 2014 Notes did not exceed the principal amount of the 2014 Notes.
	Credit Agreement
	In March 2013, the Company and certain material domestic subsidiaries of the Company (the “Guarantors”) entered into a four-year senior credit facility with Bank of America, N.A., as Administrative Agent and a lender, and a syndicate of other lenders (the “Credit Agreement”). The Credit Agreement includes a $125.0 million revolving credit facility, which includes a $5.0 million sublimit for the issuance of standby letters of credit and a $5.0 million sublimit for swingline loans. The Company may request, at any time and from time to time, that the revolving credit facility be increased by an amount not to exceed $50.0 million. The revolving credit facility is available to finance working capital, capital expenditures and other lawful corporate purposes. The Company’s obligations under the Credit Agreement are jointly and severally guaranteed by the Guarantors. On August 15, 2013, the Credit Agreement was amended to revise the definition of "Eurodollar Base Rate" and a provision regarding restricted payments. The Company currently has no outstanding amounts under the Credit Agreement.
	In connection with the closing of the Credit Agreement, the Company also entered into a security and pledge agreement (the “Security and Pledge Agreement”) which the Company and the Guarantors granted a security interest in substantially all of the Company's personal property and pledged all of the equity of the Company's domestic subsidiaries and 65% of the equity of their foreign subsidiaries. The Company also entered into a deed of trust granting a mortgage in favor of the Administrative Agent on its wafer facility in Greensboro, N.C.
	At the Company’s option, loans under the Credit Agreement shall bear interest at (i) the Applicable Rate (as defined below) plus the Eurodollar Rate (as defined in the Credit Agreement as amended) or (ii) the Applicable Rate plus a rate equal to the higher of (a) the federal funds rate plus 0.50%, (b) the prime rate of the Administrative Agent, or (c) the Eurodollar Rate plus 1.0% (the “Base Rate”). All swingline loans will bear interest at a rate equal to the Applicable Rate plus the Base Rate. The Eurodollar Rate is equal to the rate per annum calculated from the British Bankers Association LIBOR rate, as published by Reuters, for dollar deposits for interest periods of one, two, three or six months, as selected by the Company and as quoted by the Administrative Agent. The Applicable Rate for Eurodollar Rate loans ranges from 2.25% per annum to 2.75% per annum. The Applicable Rate for Base Rate loans ranges from 1.25% per annum to 1.75% per annum. Interest for Eurodollar Rate loans shall be payable at the end of each applicable interest period or at three-month intervals, if such interest period is six months or longer. Interest for Base Rate loans shall be payable quarterly in arrears. The Company paid an undrawn commitment fee, an arrangement fee and an upfront fee pursuant to the terms of the Credit Agreement. The Company will also pay a quarterly fee for any letters of credit issued under the agreement. The initial fees associated with the Credit Agreement were capitalized and are being amortized to interest expense using the straight-line method over the remaining term to maturity.
	The Credit Agreement contains various conditions, covenants and representations with which the Company must be in compliance in order to borrow funds and to avoid an event of default, including financial covenants that the Company must maintain a consolidated leverage ratio not to exceed 2.50 to 1.0 as of the end of any fiscal quarter of the Company and a consolidated liquidity ratio not to be less than 1.05 to 1.0 as of the end of any fiscal quarter of the Company. The Company must also maintain Consolidated EBITDA (as defined in the Credit Agreement) of not less than $75.0 million as of the end of any four-fiscal-quarter period of the Company. The Company is in compliance with these financial covenants as of March 29, 2014. The Credit Agreement also contains non-financial covenants including restrictions on liens, indebtedness, investments, acquisitions, dispositions, fundamental changes, changes to the nature of the business, restricted payments (such as cash dividends), capital expenditures, prepayments of other indebtedness, sale and leaseback transactions, and other customary restrictions.
	The Credit Agreement also contains customary events of default, and the occurrence of an event of default will increase the applicable rate of interest by 2.0% and could result in the termination of commitments under the revolving credit facility, the declaration that all outstanding loans are due and payable in whole or in part and the requirement of cash collateral deposits in respect of outstanding letters of credit. Outstanding amounts are due in full on the maturity date of March 19, 2017 (with amounts borrowed under the swingline option due in full no later than ten business days after such loan is made).
	Other Debt
	During fiscal 2008, the Company entered into a loan denominated in Renminbi with a bank in Beijing, China. In April 2012, this loan balance that equaled U.S. $6.3 million was repaid at maturity with cash on hand.
	During fiscal 2007, the Company entered into a $25.0 million asset-based financing equipment term loan. In fiscal 2012, the equipment term loan became due and the remaining balance of $3.9 million was paid with cash on hand.

Retirement_Benefit_Plans

Retirement Benefit Plans	12 Months Ended
	Mar. 29, 2014
Compensation and Retirement Disclosure [Abstract]	'
Retirement Benefit Plans [Text Block]	'
	RETIREMENT BENEFIT PLANS
	U.S. Defined Contribution Plan
	Each U.S. employee is eligible to participate in the Company’s fully qualified 401(k) plan immediately upon hire. An employee may invest pretax earnings in the 401(k) plan up to the maximum legal limits (as defined by Federal regulations).
	Employer contributions to the plan are made at the discretion of the Company’s Board of Directors. An employee is fully vested in the employer contribution portion of the plan after completion of two continuous years of service. The Company contributed $4.7 million, $4.3 million and $4.0 million to the plan during fiscal years 2014, 2013 and 2012, respectively.
	Germany Defined Benefit Pension Plan
	The Company maintains a qualified defined benefit pension plan for its subsidiary located in Germany. The plan is unfunded with a benefit obligation of approximately $5.5 million and $4.4 million as of March 29, 2014 and March 30, 2013, respectively, which is included in “Accrued liabilities” and “Other long-term liabilities” in the Consolidated Balance Sheets. The assumptions used in calculating the benefit obligation for the plan are dependent on the local economic conditions and were measured as of March 29, 2014 and March 30, 2013. The net periodic benefit costs were approximately $0.3 million for fiscal years 2014, 2013 and 2012.
	European Defined Contribution Plans
	Employees of the Company’s Denmark, France and United Kingdom (U.K.) subsidiaries are eligible to participate in a stakeholder pension plan immediately upon hire or after three months of service. Employees of our Finland subsidiary are eligible to participate in a government mandated plan immediately upon hire. Employees may invest their earnings in their respective plans and receive a tax benefit based upon the plan. The Company contributed $0.7 million to these plans during fiscal 2014 and $1.0 million during fiscal years 2013 and 2012.
	Asian Defined Contribution Plans
	Employees of the Company’s subsidiaries located in Taiwan, Korea and Japan are eligible to participate in a national pension plan immediately upon hire. Employees may invest their earnings in their respective national pension plans and receive a tax benefit based upon the national pension plan. Employer contributions to the plans are at the discretion of their local government regulators. The Company contributed $0.1 million to these defined contribution plans for each of the last three fiscal years.

Commitments_and_Contingent_Lia

Commitments and Contingent Liabilities	12 Months Ended
	Mar. 29, 2014
Commitments and Contingencies Disclosure [Abstract]	'
COMMITMENTS AND CONTINGENT LIABILITIES	'
	COMMITMENTS AND CONTINGENT LIABILITIES
	The Company leases certain equipment and computer hardware and software under non-cancelable lease agreements that are accounted for as capital leases. Interest rates on capital leases ranged from 6.0% to 6.4% as of March 29, 2014. Equipment under capital lease arrangements is included in property and equipment and has a cost of approximately $0.3 million as of March 29, 2014 and March 30, 2013.
	The Company leases the majority of its corporate, wafer fabrication and other facilities from several third-party real estate developers. The remaining terms of these operating leases range from less than one year to 14 years. Several have renewal options of up to two ten-year periods and several also include standard inflation escalation terms. Several also include rent escalation, rent holidays, and leasehold improvement incentives which are recognized to expense on a straight-line basis. The amortization period of leasehold improvements made either at the inception of the lease or during the lease term is amortized over the lesser of the remaining life of the lease term (including renewals that are reasonably assured) or the useful life of the asset. The Company also leases various machinery and equipment and office equipment under non-cancelable operating leases. The remaining terms of these operating leases range from less than one year to approximately three years. As of March 29, 2014, the total future minimum lease payments were approximately $48.7 million related to facility operating leases and approximately $0.2 million related to equipment operating leases.
	Minimum future lease payments under non-cancelable capital and operating leases as of March 29, 2014, are as follows (in thousands):
	Fiscal Year	Capital		Operating
	2015	$	73	$	8,899
	2016	18		7,761
	2017	—		6,926
	2018	—		5,292
	2019	—		4,118
	Thereafter	—		15,847
	Total minimum payment	91		$	48,843
	Less amounts representing interest	4
	Present value of minimum lease payments	87
	Less current portion	69
	Obligations under capital leases, less current portion	$	18
	Rent expense under operating leases, including facilities and equipment, was approximately $10.7 million, $10.1 million, and $7.4 million for fiscal years 2014, 2013 and 2012, respectively. See Note 12 for information related to the lower rent expense in fiscal 2012.
	Legal Matters
	The Company accrues a liability for legal contingencies when it believes that it is both probable that a liability has been incurred and that it can reasonably estimate the amount of the loss. The Company reviews these accruals and adjusts them to reflect ongoing negotiations, settlements, rulings, advice of legal counsel and other relevant information. To the extent new information is obtained and the Company's views on the probable outcomes of claims, suits, assessments, investigations or legal proceedings change, changes in the Company's accrued liabilities would be recorded in the period in which such determination is made. For the matter referenced below, no liability has been established in the financial statements regarding current litigation as the potential liability, if any, is not probable or the amount cannot be reasonably estimated.
	Since February 14, 2012, the Company has been a party in legal proceedings with Peregrine Semiconductor Corporation (“Peregrine”) in which Peregrine has asserted infringement of certain of its patents. The proceedings commenced with a complaint filed by Peregrine in the United States International Trade Commission (“ITC”), which Peregrine ultimately decided to dismiss. After various procedural matters following the dismissal of the ITC proceeding, the Company is currently a party to a lawsuit initiated by Peregrine in the United States District Court for the Southern District of California alleging infringement of certain Peregrine patents. In December 2013, the Company filed a counterclaim against Peregrine alleging infringement by Peregrine of a Company patent and seeking declaratory relief regarding non-infringement and unenforceability of Peregrine’s patents. In March 2014, Peregrine's infringement claims for two of its four asserted patents were dismissed with prejudice. The Company intends to continue to vigorously defend its position that it has not infringed any valid claim of any of the Peregrine patents in the above-referenced legal proceeding.

Restructuring

Restructuring	12 Months Ended
	Mar. 29, 2014
Restructuring and Related Activities [Abstract]	'
RESTRUCTURING	'
	RESTRUCTURING
	During fiscal 2014, the Company recorded $11.1 million of restructuring expenses, related to (1) efforts initiated to achieve manufacturing efficiencies, (2) efforts initiated to reduce operating expenses, (3) expenses associated with the sale of its GaAs semiconductor manufacturing facility in the U.K., and (4) expenses associated with the 2009 economic restructuring efforts.
	During fiscal 2014, the Company initiated restructuring efforts to achieve manufacturing efficiencies. The Company recorded restructuring charges in “Other operating (income) expense” of approximately $4.1 million, primarily related to employee termination benefits.
	In the fourth quarter of fiscal 2014, the Company initiated another restructuring to reduce operating expenses that resulted in restructuring expenses of approximately $2.5 million, primarily related to employee termination benefits recorded in “Other operating (income) expense.” At the end of fiscal 2014, restructuring obligations primarily relating to employee termination benefits totaled $1.1 million and were included in “Accrued liabilities” in the Consolidated Balance Sheets. As part of this restructuring, the Company discontinued engineering efforts related to an IPRD project and impaired the intangible asset in the amount of $11.3 million, which is also recorded in “Other operating expense (income)” (see Note 8).
	In March 2013, the Company announced that it would phase out manufacturing in its Newton Aycliffe, U.K.-based GaAs facility and transition the remaining product demand from that facility to its GaAs manufacturing facility in Greensboro, N.C.  During the second quarter of fiscal 2014, the Company sold its U.K.-based GaAs facility to Compound Photonics. The Company recorded restructuring charges in “Other operating expense (income)” of approximately $4.4 million and $0.8 million in fiscal years 2014 and 2013, respectively, primarily related to impaired property, plant and equipment and employee termination benefits. At the end of fiscal 2013, restructuring obligations (relating primarily to employee termination benefits) totaled $0.8 million and were included in “Accrued liabilities” in the Consolidated Balance Sheets. As of March 29, 2014, the restructuring associated with the phase out of manufacturing and sale of the Newton Aycliffe, U.K.-based GaAs facility is complete.
	In fiscal 2009, the Company initiated a restructuring to reduce manufacturing capacity and costs and operating expenses due primarily to lower demand for its products resulting from the global economic slowdown. The restructuring decreased the Company’s workforce and resulted in the impairment of certain property and equipment, among other charges. The Company recorded restructuring charges in “Other operating expense (income)” of approximately $0.1 million, $0.2 million and $(1.4) million in fiscal years 2014, 2013 and 2012, respectively, related to employee termination benefits, impaired assets (including property, plant and equipment), and lease and other contract termination costs. The current and long-term restructuring obligations (relating primarily to lease obligations) totaling $3.9 million and $4.6 million as of March 29, 2014 and March 30, 2013, respectively, are included in “Accrued liabilities” and “Other long-term liabilities” in the Consolidated Balance Sheets. During fiscal 2012, the restructuring obligation and related rent expense was reduced by $1.7 million as a result of the Company utilizing one of the facilities previously exited due to a change in manufacturing operations. The remaining activity related to these obligations during fiscal 2012 was primarily due to payments associated with our exited leased facilities. As of March 29, 2014, the restructuring associated with the adverse macroeconomic business environment is substantially complete. The Company expects to record approximately $0.9 million of additional restructuring charges primarily associated with ongoing expenses related to exited leased facilities.

Income_Taxes

Income Taxes	12 Months Ended
	Mar. 29, 2014
Income Tax Disclosure [Abstract]	'
INCOME TAXES	'
	INCOME TAXES
	Income (loss) before income taxes consists of the following components (in thousands):
		Fiscal Year
		2014				2013				2012
	United States	$	(7,120	)		$	(72,895	)		$	(45,031	)
	Foreign	30,993				46,996				60,659
	Total	$	23,873			$	(25,899	)		$	15,628
	The components of the income tax provision are as follows (in thousands):
		Fiscal Year
		2014				2013				2012
	Current (expense) benefit:
	Federal	$	(875	)		$	(515	)		$	1,106
	State	24				73				73
	Foreign	(9,939		)		(9,862		)		(11,667		)
		(10,790		)		(10,304		)		(10,488		)
	Deferred (expense) benefit:
	Federal	$	488			$	(214	)		$	(580	)
	State	59				(13		)		(35		)
	Foreign	(988		)		(16,569		)		(3,668		)
		(441		)		(16,796		)		(4,283		)
	Total	$	(11,231	)		$	(27,100	)		$	(14,771	)
	A reconciliation of the (provision for) or benefit from income taxes to income tax (expense) or benefit computed by applying the statutory federal income tax rate to pre-tax (loss) income for fiscal years 2014, 2013 and 2012 is as follows (dollars in thousands):
		Fiscal Year
		2014						2013					2012
		Amount			Percentage			Amount			Percentage		Amount			Percentage
	Income tax (expense) benefit at statutory federal rate	$	(8,355	)	35	%		$	9,065		35	%	$	(5,470	)	35	%
	Decrease (increase) resulting from:
	State benefit (provision), net of federal (provision) benefit	75			(0.31	)		(827		)	(3.19	)	849			(5.43	)
	Research and development credits	3,177			(13.31	)		6,257			24.16		3,422			(21.90	)
	Foreign tax credits	574			(2.41	)		2,434			9.39		1,998			(12.78	)
	Effect of changes in income tax rate applied to net deferred tax assets	(65		)	0.27			(1,250		)	(4.83	)	(1,568		)	10.04
	Foreign tax rate difference	636			(2.66	)		3,218			12.43		7,486			(47.90	)
	Change in valuation allowance	5,890			(24.67	)		(40,675		)	(157.05	)	(20,408		)	130.58
	Repurchase of convertible subordinated notes	—			—			438			1.69		622			(3.98	)
	Adjustments to net deferred tax assets	2,939			(12.31	)		(872		)	(3.37	)	597			(3.82	)
	Share-based compensation	(635		)	2.66			(2,108		)	(8.14	)	(66		)	0.42
	Tax reserve adjustments	(1,482		)	6.21			(515		)	(1.99	)	2,084			(13.33	)
	Deemed dividend	(1,122		)	4.7			(1,749		)	(6.75	)	(3,971		)	25.41
	Write-off U.K. gross deferred tax assets	(12,699		)	53.19			—			—		—			—
	Other income tax benefit (expense)	(164		)	0.69			(516		)	(1.99	)	(346		)	2.21
		$	(11,231	)	47.05	%		$	(27,100	)	(104.64	)%	$	(14,771	)	94.52	%
	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 basis used for income tax purposes. The deferred income tax assets and liabilities are measured in each taxing jurisdiction using the enacted tax rates and laws that will be in effect when the differences are expected to reverse.
	Significant components of the Company’s net deferred income taxes are as follows (in thousands):
		Fiscal Year
		2014				2013
	Deferred income tax assets:
	Inventory reserve	$	9,813			$	8,107
	Basis in stock and other investments	2,748				5,547
	Equity compensation	17,860				18,574
	Accumulated depreciation/basis difference	29,260				42,541
	Net operating loss carry-forwards	37,676				57,632
	Research and other credits	71,406				66,796
	Other deferred assets	9,189				10,643
	Total deferred income tax assets	177,952				209,840
	Valuation allowance	(143,264		)		(164,244		)
	Total deferred income tax assets, net of valuation allowance	$	34,688			$	45,596
	Deferred income tax liabilities:
	Amortization and purchase accounting basis difference	$	(10,862	)		$	(18,183	)
	Convertible debt discount	(83		)		(1,918		)
	Deferred gain	(4,994		)		(6,320		)
	Other deferred liabilities	(501		)		(744		)
	Total deferred income tax liabilities	(16,440		)		(27,165		)
	Net deferred income tax assets	$	18,248			$	18,431
Amounts included in consolidated balance sheets:
Current assets	$	4,419			$	2,760
Current liabilities	(200		)		(329		)
Non-current assets	14,913				17,221
Non-current liabilities	(884		)		(1,221		)
Net deferred income tax assets	$	18,248			$	18,431
At March 29, 2014, the Company has recorded a $143.3 million valuation allowance against the U.S. net deferred tax assets and small net deferred assets at several foreign subsidiaries. These valuation allowances were established based upon management's opinion that it is more likely than not that the benefit of these deferred tax assets may not be realized. Realization is dependent upon generating future income in the taxing jurisdictions in which the operating loss carryovers, credit carryovers, depreciable tax basis and other tax deferred assets exist. It is management's intent to evaluate the realizability of these deferred tax assets on a quarterly basis.
As of the beginning of fiscal 2012, there was a $92.3 million valuation allowance against $90.5 million of U.S. net deferred tax assets and $1.8 million of Shanghai, China net deferred tax assets. The $20.4 million increase in the valuation allowance during fiscal 2012 was comprised of a $22.2 million increase related to changes in domestic deferred tax assets during fiscal 2012, offset by a $1.8 million decrease related to the release of the Shanghai, China valuation allowance upon completing the liquidation of that legal entity.
The valuation allowance against net deferred tax assets increased in fiscal 2013 by $51.5 million from the $112.7 million balance as of the end of fiscal 2012. The change was comprised of $12.0 million established during the fiscal year related to the U.K., $10.8 million related to the Amalfi acquisition, and a $28.7 million increase related to changes in domestic deferred tax assets during the fiscal year. The U.K. valuation allowance was recorded as a result of the decision, announced in March 2013, to phase out manufacturing at the Newton Aycliffe U.K. facility. Consequently, the Company determined that this represented significant negative evidence, and that it was no longer “more likely than not” that any U.K. deferred tax assets remaining at the end of fiscal 2014 would ultimately be realized.
The valuation allowance against net deferred tax assets decreased in fiscal 2014 by $20.9 million. The decrease was comprised of the reversal of the $12.0 million U.K. valuation allowance established during fiscal 2013 and $15.1 million related to deferred tax assets used against deferred intercompany profits, offset by increases related to a $3.4 million adjustment in the net operating losses acquired in the Amalfi acquisition and $2.8 million for other changes in net deferred tax assets for domestic and for other foreign subsidiaries during the fiscal year. The U.K. valuation allowance was reversed in connection with the sale of the U.K. manufacturing facility in fiscal 2014 and the write-off of the remaining U.K. deferred tax assets.
As of the end of fiscal 2014, a valuation allowance of $143.3 million remained against the net deferred tax assets in the U.S. as the significant negative evidence of current and cumulative pre-tax losses for the most recent three-year period in that jurisdiction was not overcome by available positive evidence.
As of March 29, 2014, the Company had federal loss carryovers of approximately $118.9 million that expire in fiscal years 2020 to 2032 if unused and state losses of approximately $109.6 million that expire in fiscal years 2015 to 2032 if unused. Federal research credits of $64.4 million, federal foreign tax credits of $6.2 million, and state credits of $22.5 million may expire in fiscal years 2015 to 2033, 2018 to 2023, and 2015 to 2028, respectively. Federal alternative minimum tax credits of $1.5 million will carry forward indefinitely. Included in the amounts above are certain net operating losses (NOLs) and other tax attribute assets acquired in conjunction with the Filtronic, Sirenza, Silicon Wave, Inc., and Amalfi acquisitions. The utilization of acquired domestic assets is subject to certain annual limitations as required under Internal Revenue Code Section 382 and similar state income tax provisions.
The Company has continued to expand its operations and increase its investments in numerous international jurisdictions. These activities expose the Company to taxation in multiple foreign jurisdictions. It is management's opinion that current and future undistributed foreign earnings will be permanently reinvested. Accordingly, no provision for U.S. federal and state income taxes has been made thereon. It is not practical to estimate the additional tax that would be incurred, if any, if the permanently reinvested earnings were repatriated. At March 29, 2014, the Company has not provided U.S. taxes on approximately $226.3 million of undistributed earnings of foreign subsidiaries that have been reinvested outside the U.S. indefinitely.
A subsidiary in a foreign jurisdiction was granted an exemption from income taxes for a two-year period (calendar 2010 and 2011) followed by a three-year period (calendar 2012 through 2014) at one-half the normal tax rate. There was no income tax expense impact in fiscal 2014 as the foreign subsidiary was in the process of being liquidated and no income tax benefit was accrued for the losses incurred during the year. Income tax expense was increased in fiscal 2013 by less than $0.1 million (less than $0.001 per basic or diluted share) and decreased in fiscal 2012 by less than $0.1 million (less than $0.001 per basic or diluted share) as a result of this agreement. This agreement will expire in fiscal 2015.
The Company’s gross unrecognized tax benefits totaled $39.4 million as of March 29, 2014, $37.9 million as of March 30, 2013, and $31.7 million as of March 31, 2012. Of these amounts, $30.9 million (net of federal benefit of state taxes), $29.7 million (net of federal benefit of state taxes), and $24.4 million (net of federal benefit of state taxes) as of March 29, 2014,  March 30, 2013,  March 31, 2012, respectively, represent the amounts of unrecognized tax benefits that, if recognized, would impact the effective tax rate in each of the fiscal years.
A reconciliation of the fiscal 2012 through fiscal 2014 beginning and ending amount of gross unrecognized tax benefits is as follows (in thousands):
	Fiscal Year
	2014				2013				2012
Beginning balance	$	37,917			$	31,727			$	32,941
Additions based on positions related to current year	2,181				2,209				1,067
Additions for tax positions in prior years	229				4,780				450
Reductions for tax positions in prior years	(904		)		(482		)		(2,699		)
Expiration of Statute of Limitations	—				(317		)		(32		)
Settlements	—				—				—
Ending Balance	$	39,423			$	37,917			$	31,727
Of the fiscal 2013 additions to tax positions in prior years, $4.4 million was assumed by the Company in the Amalfi acquisition and relates to positions taken on tax returns for pre-acquisition periods.
It is the Company’s policy to recognize interest and penalties related to uncertain tax positions as a component of income tax expense. During fiscal years 2014, 2013 and 2012, the Company recognized $0.9 million, $0.7 million, and $0.6 million, respectively, of interest and penalties related to uncertain tax positions. Accrued interest and penalties related to unrecognized tax benefits totaled $2.3 million, $1.3 million, and $0.6 million as of March 29, 2014, March 30, 2013 and March 31, 2012, respectively.
Within the next 12 months, the Company believes it is reasonably possible that up to $0.5 million of gross unrecognized tax benefits may be reduced as a result of reductions for temporary tax positions taken in prior years.
Returns for fiscal years 2005 through 2009 have been examined by the U.S. federal taxing authorities and returns for fiscal 2011 and subsequent tax years remain open for examination. North Carolina returns for fiscal years 2006 through 2008 have been examined by the tax authorities and returns for fiscal 2011 and subsequent tax years remain open for examination. Returns for calendar years 2005 through 2007 have been examined by the German taxing authorities and returns for subsequent fiscal tax years remain open for examination. Other material jurisdictions that are subject to examination by tax authorities are California (fiscal 2010 through present), the U.K. (fiscal 2012 through present), and China (calendar year 2004 through present). Tax attributes (including net operating loss and credit carryovers) arising in earlier fiscal years remain open to adjustment.

Net_Income_Loss_Per_Share

Net Income (Loss) Per Share	12 Months Ended
	Mar. 29, 2014
Earnings Per Share [Abstract]	'
NET INCOME (LOSS) PER SHARE	'
	NET INCOME (LOSS) PER SHARE
	The following table sets forth the computation of basic and diluted net income (loss) per share (in thousands, except per share data):
		For Fiscal Year
		2014		2013			2012
	Numerator:
	Numerator for basic and diluted net income (loss) per share — net income (loss) available to common shareholders	$	12,642	$	(52,999	)	$	857
	Denominator:
	Denominator for basic net income (loss) per share — weighted average shares	281,996		278,602			276,289
	Effect of dilutive securities:
	Share-based awards	6,078		—			6,287
	Denominator for diluted net income (loss) per share — adjusted weighted average shares and assumed conversions	288,074		278,602			282,576
	Basic net income (loss) per share	$	0.04	$	(0.19	)	$	0
	Diluted net income (loss) per share	$	0.04	$	(0.19	)	$	0
	In the computation of diluted net income per share for fiscal years 2014 and 2012, 7.2 million shares and 6.3 million shares, respectively, were excluded because the exercise price of the options was greater than the average market price of the underlying common stock and the effect of their inclusion would have been anti-dilutive. In the computation of diluted net loss per share for fiscal 2013, all outstanding share-based awards were excluded because the effect of their inclusion would have been anti-dilutive.
	The computation of diluted net income (loss) per share does not assume the conversion of the Company’s $200 million initial aggregate principal amount of the 2012 Notes or the Company’s $175 million initial aggregate principal amount of 2014 Notes. The 2012 Notes and 2014 Notes generally would become dilutive to earnings if the average market price of the Company’s common stock exceeds approximately $8.05 per share. The 2012 Notes became due on April 15, 2012, and the remaining principal balance of $26.5 million was paid with cash on hand (see Note 9). The 2014 Notes became due on April 15, 2014, and the remaining principal balance of $87.5 million was paid with cash on hand (see Note 9).

ShareBased_Compensation

Share-Based Compensation	12 Months Ended
	Mar. 29, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
SHARE-BASED COMPENSATION	'
	SHARE-BASED COMPENSATION
	Summary of Stock Option Plans
	Directors’ Option Plan
	In April 1997, the Company and its shareholders adopted the Non-employee Directors’ Stock Option Plan. Under the terms of this plan, directors who are not employees of the Company are entitled to receive options to acquire shares of common stock. An aggregate of 1.6 million shares of common stock have been reserved for issuance under this plan, subject to adjustment for certain events affecting the Company’s capitalization. No further awards can be granted under this plan.
	1999 Stock Incentive Plan
	The 1999 Stock Incentive Plan (the "1999 Stock Plan"), which the Company’s shareholders approved at the 1999 annual meeting of shareholders, provides for the issuance of a maximum of 16.0 million shares of common stock pursuant to awards granted thereunder. The maximum number of shares of common stock that may be issued under the plan pursuant to grant of restricted awards shall not exceed 2.0 million shares. The number of shares reserved for issuance under the 1999 Stock Plan and the terms of awards may be adjusted upon certain events affecting the Company’s capitalization. No further awards can be granted under this plan.
	Sirenza Microdevices, Inc. Amended and Restated 1998 Stock Plan
	In connection with the merger of a wholly owned subsidiary of the Company with and into Sirenza and the subsequent merger of Sirenza with and into the Company, the Company assumed the Sirenza Amended and Restated 1998 Stock Plan. This plan provides for the grant of awards to acquire common stock to employees, non-employee directors and consultants. This plan permits the grant of incentive and nonqualified options, restricted awards and performance share awards. No further awards can be granted under this plan.
	2003 Stock Incentive Plan
	The Company's shareholders approved the 2003 Stock Incentive Plan (the "2003 Plan") on July 22, 2003, and, effective upon that approval, new stock option and other share-based awards for employees were granted only under the 2003 Plan. The Company was also permitted to grant other types of equity incentive awards, under the 2003 Plan, such as stock appreciation rights, restricted stock awards, performance shares and performance units. On May 2, 2012, the Company granted performance-based restricted stock units that were awarded on May 15, 2013, after it was determined that certain performance objectives had been met. The aggregate number of shares subject to performance-based restricted stock units awarded for fiscal 2013 under the 2003 Plan was 2.0 million shares. On May 4, 2011, the Company granted performance-based restricted stock units that were awarded on May 2, 2012, after it was determined that certain performance objectives had been met. The aggregate number of shares subject to performance-based restricted stock units awarded for fiscal 2012 under the 2003 Plan was 1.4 million shares. In the past, the Company had various employee stock and incentive plans identified above under which stock options and other share-based awards were granted. Stock options and other share-based awards that were granted under prior plans and were outstanding on July 22, 2003 continued in accordance with the terms of the respective plans.
	The maximum number of shares issuable under the 2003 Plan could not exceed the sum of (a) 30.3 million shares, plus (b) any shares of common stock (i) remaining available for issuance as of the effective date of the 2003 Plan under the Company's prior plans and (ii) subject to an award granted under a prior plan, which awards were forfeited, canceled, terminated, expired or lapsed for any reason. No further awards can be granted under this plan.
	2012 Stock Incentive Plan
	The Company currently grants stock options and restricted stock units to employees and directors under the 2012 Stock Incentive Plan (the "2012 Plan"). The Company's shareholders approved the 2012 Plan on August 16, 2012, and, effective upon that approval, new stock option and other share-based awards for employees and directors may be granted only under the 2012 Plan. The Company is also permitted to grant other types of equity incentive awards, under the 2012 Plan, such as stock appreciation rights, restricted stock awards, performance shares and performance units. The aggregate number of shares subject to performance-based restricted stock units awarded for fiscal 2014 under the 2012 Plan was 1.2 million shares. In the past, the Company had various employee stock and incentive plans identified above under which stock options and other share-based awards were granted. Stock options and other share-based awards that were granted under prior plans and were outstanding on August 16, 2012 continued in accordance with the terms of the respective plans.
	The maximum number of shares issuable under the 2012 Plan may not exceed the sum of (a) 17.0 million shares, plus (b) any shares of common stock (i) remaining available for issuance as of the effective date of the 2012 Plan under the Company's prior plans and (ii) subject to an award granted under a prior plan, which awards are forfeited, canceled, terminated, expire or lapse for any reason. As of March 29, 2014, 20.3 million shares were available for issuance under the 2012 Plan.
	2006 Directors’ Stock Option Plan
	At the Company’s 2006 annual meeting of shareholders, shareholders of the Company adopted the 2006 Directors’ Stock Option Plan, which replaced the Non-Employee Directors’ Stock Option Plan and reserved an additional 1.0 million shares of common stock for issuance to non-employee directors. Under the terms of this plan, directors who are not employees of the Company are entitled to receive options to acquire shares of common stock. An aggregate of 1.4 million shares of common stock has been reserved for issuance under this plan, including shares remaining available for issuance under the prior Non-employee Directors’ Stock Option Plan. No further awards can be granted under this plan.
	Employee Stock Purchase Plan
	In April 1997, the Company adopted its Employee Stock Purchase Plan ("ESPP"), which is intended to qualify as an “employee stock purchase plan” under Section 423 of the Internal Revenue Code. All regular full-time employees of the Company (including officers) and all other employees who meet the eligibility requirements of the plan may participate in the ESPP. The ESPP provides eligible employees an opportunity to acquire the Company’s common stock at 85% of the lower of the closing price per share of the Company’s common stock on the first or last day of each six-month purchase period. At March 29, 2014, 3.8 million shares were available for future issuance under this plan, subject to anti-dilution adjustments in the event of certain changes in the capital structure of the Company. The Company makes no cash contributions to the ESPP, but bears the expenses of its administration. The Company issued 1.0 million shares under the ESPP in fiscal 2014.
	For fiscal years 2014, 2013 and 2012, the primary share-based awards and their general terms and conditions are as follows:
	Stock options are granted to employees with an exercise price equal to the market price of the Company’s stock at the date of grant, generally vest over a four-year period from the grant date, and generally expire 10 years from the grant date. Restricted stock units granted by the Company in fiscal years 2014, 2013 and 2012 are either service-based, performance and service-based, or based on shareholder return. Service-based restricted stock units generally vest over a four-year period from the grant date. Performance and service-based restricted stock units are earned based on Company performance of stated metrics generally during the fiscal year and, if earned, vest one-half when earned and the balance over two years. Restricted stock units based on shareholder return are earned based upon total shareholder return of the Company in comparison to the total shareholder return of a benchmark index and vest over one-year, two-year and three-year performance periods. Under the 2012 Plan for fiscal years 2014 and 2013 and the 2006 Directors’ Stock Option Plan for fiscal 2012, stock options granted to non-employee directors (other than initial options, as described below) had an exercise price equal to the market price of the Company’s stock at the date of grant, vested immediately upon grant and expire 10 years from the grant date. Each non-employee director who is first elected or appointed to the Board of Directors will receive an initial option at an exercise price equal to the market price of the Company’s stock at the date of grant, which vests over a two-year period from the grant date and expires 10 years from the grant date. At the director’s option, he may instead elect to receive all or part of the initial grant in restricted stock units. Thereafter, each non-employee director is eligible to receive an annual option or, if he so chooses, an annual grant of restricted stock units.
	The options and restricted stock units granted to certain officers of the Company generally will, in the event of the officer's termination other than for cause, continue to vest pursuant to the same vesting schedule as if the officer had remained an employee of the Company (unless the administrator of the plan determines otherwise) and as a result, these awards are expensed at grant date. In fiscal 2014, share-based compensation of $11.0 million was recognized upon the grant of 2.2 million options and restricted share units to certain officers of the Company.
	Share-Based Compensation
	Under ASC 718, share-based compensation cost is measured at the grant date, based on the estimated fair value of the award using an option pricing model, and is recognized as expense over the employee's requisite service period. ASC 718 covers a wide range of share-based compensation arrangements including stock options, restricted share plans, performance-based awards, share appreciation rights and employee stock purchase plans.
	Total pre-tax share-based compensation expense recognized in the Consolidated Statements of Operations was $29.9 million for fiscal 2014, net of expense capitalized into inventory. For fiscal years 2013 and 2012, the total pre-tax share-based compensation expense recognized was $30.8 million and $26.2 million, respectively.
	A summary of activity of the Company’s director and employee stock option plans follows:
		Shares		Weighted-				Weighted-Average Remaining Contractual Term (in years)		Aggregate
		(in thousands)		Average						Intrinsic
				Exercise						Value
				Price						(in thousands)
	Outstanding as of March 30, 2013	10,634		$	5.92
	Granted	358		$	5.03
	Exercised	-2,267		$	5.48
	Canceled	-1,701		$	6.94
	Forfeited	-11		$	5.92
	Outstanding as of March 29, 2014	7,013		$	5.77			3.11		$	13,558
	Vested and expected to vest as of	7,003		$	5.77			3.1		$	13,527
	29-Mar-14
	Options exercisable as of March 29, 2014	6,476		$	5.83			2.68		$	12,102
	The aggregate intrinsic value in the table above represents the total pre-tax intrinsic value, based upon the Company’s closing stock price of $7.70 as of March 29, 2014, that would have been received by the option holders had all option holders with in-the-money options exercised their options as of that date.
	The fair value of each option award is estimated on the date of grant using a Black-Scholes option-pricing model based on the assumptions noted in the following tables:
		Fiscal Year
		2014			2013			2012
	Expected volatility	43.2		%	51.6		%	57.2		%
	Expected dividend yield	0		%	0		%	0		%
	Expected term (in years)	5.5			5.5			5.4
	Risk-free interest rate	1.4		%	0.8		%	1.4		%
	Weighted-average grant-date fair value of options granted during the period	$	2.08		$	1.8		$	3.19
	The total intrinsic value of options exercised during fiscal 2014, was $3.1 million. For fiscal years 2013 and 2012, the total intrinsic value of options exercised was $0.5 million and $2.6 million, respectively.
	Cash received from the exercise of stock options and from participation in the employee stock purchase plan (excluding accrued employee refunds) was $17.1 million for fiscal 2014 and is reflected in cash flows from financing activities in the Consolidated Statements of Cash Flows. The Company settles employee stock options with newly issued shares of the Company's common stock.
	The Company used the implied volatility of market-traded options on the Company’s common stock for the expected volatility assumption input to the Black-Scholes option-pricing model, consistent with the guidance in ASC 718. The selection of implied volatility data to estimate expected volatility was based upon the availability of actively-traded options on the Company’s common stock and the Company’s assessment that implied volatility is more representative of future common stock price trends than historical volatility.
	The dividend yield assumption is based on the Company’s history and expectation of future dividend payouts and may be subject to change in the future. The Company has never paid a dividend.
	The expected life of employee stock options represents the weighted-average period that the stock options are expected to remain outstanding. The Company’s method of calculating the expected term of an option is based on the assumption that all outstanding options will be exercised at the midpoint of the current date and full contractual term, combined with the average life of all options that have been exercised or canceled. The Company believes that this method provides a better estimate of the future expected life based on analysis of historical exercise behavioral data.
	The risk-free interest rate assumption is based upon observed interest rates appropriate for the terms of the Company’s employee stock options.
	ASC 718 requires forfeitures to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. Based upon historical pre-vesting forfeiture experience, the Company assumed an annualized forfeiture rate of 1.5% for both stock options and restricted stock units.
	The following activity has occurred with respect to restricted stock unit awards:
		Shares			Weighted-Average
		(in thousands)			Grant-Date
					Fair Value
	Balance at March 30, 2013	10,547			$	4.63
	Granted	5,328			4.59
	Vested	-5,713			4.76
	Forfeited	-972			4.53
	Balance at March 29, 2014	9,190			$	4.53
As of March 29, 2014, total remaining unearned compensation cost related to nonvested restricted stock units was $22.0 million, which will be amortized over the weighted-average remaining service period of approximately 1.2 years.
The total fair value of restricted stock units that vested during fiscal 2014 was $30.0 million, based upon the fair market value of the Company’s common stock on the vesting date. For fiscal years 2013 and 2012, the total fair value of restricted stock units that vested was $21.0 million and $35.8 million, respectively.

Shareholders_Equity

Shareholders' Equity	12 Months Ended
	Mar. 29, 2014
Equity [Abstract]	'
SHAREHOLDERS' EQUITY	'
	SHAREHOLDERS’ EQUITY
	Share Repurchase
	On January 25, 2011, the Company announced that its board of directors authorized the repurchase of up to $200 million of its outstanding common stock, exclusive of related fees, commissions or other expenses, from time to time during a period commencing on January 28, 2011 and expiring on January 27, 2013.  This share repurchase program authorizes the Company to repurchase shares through solicited or unsolicited transactions in the open market or in privately negotiated transactions. On January 31, 2013, the Company's board of directors authorized an extension of its 2011 share repurchase program to repurchase up to $200 million of its outstanding common stock through January 31, 2015. Because of the Company's incorporation in North Carolina, which does not recognize treasury shares, the repurchased shares are canceled at the time of repurchase. Shares repurchased are deemed authorized but unissued shares of common stock.
	During fiscal 2014, the Company repurchased 2.5 million shares at an average price of $5.03 on the open market. During fiscal 2013, the Company repurchased approximately 1.9 million shares at an average price of $3.75 on the open market and during fiscal 2012, the Company repurchased approximately 4.9 million shares at an average price of $6.18 on the open market. Since January 2011, the Company repurchased a total of approximately 11.0 million shares of our common stock under this program at an average price of $5.70 on the open market for a total of $62.6 million. As of March 29, 2014, approximately $137.4 million remains available for repurchase.
	Common Stock Reserved For Future Issuance
	At March 29, 2014, the Company had reserved a total of approximately 48.7 million of its authorized 500.0 million shares of common stock for future issuance as follows (in thousands):
	Outstanding stock options under formal directors’ and employees’ stock option plans	7,013
	Possible future issuance under Company stock option plans	20,266
	Employee stock purchase plan	3,812
	Restricted share-based units granted	9,190
	Possible future issuance pursuant to convertible subordinated notes*	8,444
	Total shares reserved	48,725
	*The 2014 Notes became due on April 15, 2014, and the remaining principal balance of $87.5 million was paid with cash on hand, therefore, the conversion feature will not be triggered.

Operating_Segment_and_Geograph

Operating Segment and Geographical Information	12 Months Ended
	Mar. 29, 2014
Segment Reporting [Abstract]	'
OPERATING SEGMENT INFORMATION	'
	OPERATING SEGMENT AND GEOGRAPHIC INFORMATION
	RFMD’s operating segments as of March 29, 2014 are its Cellular Products Group (CPG), Multi-Market Products Group (MPG) and Compound Semiconductor Group (CSG).
	CPG is a leading global supplier of cellular radio frequency (RF) solutions which perform various functions in the cellular front end section.  The cellular front end section is located between the transceiver and the antenna.  These RF solutions include power amplifier (PA) modules, transmit modules, PA duplexer modules, antenna control solutions, antenna switch modules, switch filter modules,  switch duplexer modules, and RF power management solutions.  CPG supplies its broad portfolio of cellular RF solutions into a variety of mobile devices, including smartphones, handsets, notebook computers and tablets.
	MPG is a leading global supplier of a broad array of RF solutions, such as PAs, low noise amplifiers, variable gain amplifiers, high power gallium nitride transistors, attenuators, modulators, switches, voltage-controlled oscillators (VCOs), phase locked loop modules, multi-chip modules, front end modules, and a range of military and space components (amplifiers, mixers, VCOs and power dividers). Major communications applications include mobile wireless infrastructure, point-to-point and microwave radios, small cells, WiFi (routers, access points, mobile devices and customer premises equipment) and cable television (CATV) infrastructure. Industrial applications include Smart Energy/Advanced Metering Infrastructure (AMI), private mobile radio, and test and measurement equipment. Aerospace and defense applications include military communications, radar and electronic warfare, as well as space communications.
	During the second quarter of fiscal 2013, the Company's foundry services were realigned from its CSG to its MPG. CSG is a business group established to leverage RFMD’s compound semiconductor technologies and related expertise in RF and non-RF end markets and applications.
	As of March 29, 2014, the Company’s reportable segments are CPG and MPG. CSG does not currently meet the quantitative threshold for an individually reportable segment under ASC 280-10-50-12 and is therefore included in the “Other operating segment” line in the following tables. CPG and MPG are separate reportable segments based on the organizational structure and information reviewed by the Company’s Chief Executive Officer, who is the Company’s chief operating decision maker (or CODM), and are managed separately based on the end markets and applications they support. The CODM allocates resources and assesses the performance of each operating segment primarily based on non-GAAP operating income (loss) and non-GAAP operating income (loss) as a percentage of revenue.
	The “All other” category includes operating expenses such as share-based compensation, amortization of purchased intangible assets, acquisition-related costs, loss on asset transfer transaction, intellectual property rights (IPR) litigation costs, the inventory revaluation resulting from the transfer of the Company's molecular beam epitaxy (“MBE”) operations, net restructuring costs, certain consulting costs, expenses related to a potential strategic transaction that was terminated and other miscellaneous corporate overhead expenses that the Company does not allocate to its reportable segments because these expenses are not included in the segment operating performance measures evaluated by the Company’s CODM. The CODM does not evaluate operating segments using discrete asset information. The Company’s operating segments do not record inter-company revenue. The Company does not allocate gains and losses from equity investments, interest and other income, or taxes to operating segments. Except as discussed above regarding the “All other” category, the Company’s accounting policies for segment reporting are the same as for RFMD as a whole.
	The following tables present details of the Company’s reportable segments and a reconciliation of the “All other” category (in thousands):
		Fiscal Year
		2014			2013			2012
	Revenue:
	CPG	$	935,313		$	761,425		$	664,242
	MPG	212,897			202,722			207,110
	Other operating segment	21			—			—
	Total revenue	$	1,148,231		$	964,147		$	871,352
	Income (loss) from operations:
	CPG	$	109,862		$	52,574		$	61,776
	MPG	32,315			11,181			10,930
	Other operating segment	(3,363		)	(2,766		)	(3,511		)
	All other	(111,473		)	(76,669		)	(44,552		)
	Income (loss) from operations	$	27,341		$	(15,680	)	$	24,643
	Interest expense	$	(5,983	)	$	(6,532	)	$	(10,997	)
	Interest income	179			249			468
	Loss on retirement of convertible subordinated notes	—			(2,756		)	(908		)
	Other income (expense)	2,336			(1,180		)	2,422
	Income (loss) before income taxes	$	23,873		$	(25,899	)	$	15,628
		Fiscal Year
		2014			2013			2012
	Reconciliation of “All other” category:
	Share-based compensation expense	$	(29,901	)	$	(30,819	)	$	(26,174	)
	Amortization of intangible assets	(28,638		)	(23,107		)	(18,390		)
	Acquired inventory step-up and revaluation	—			(3,140		)	—
	Impairment of intangible asset	(11,300		)	—			—
	Acquisition and integration related costs	(8,105		)	(2,765		)	—
	Restructuring and disposal costs associated with the phase out of manufacturing and sale of the U.K. facility	(8,118		)	(1,365		)	—
	Loss on asset transfer transaction	—			(5,042		)	—
	IPR litigation costs	(7,578		)	(5,955		)	—
	Inventory revaluation resulting from transfer of MBE operations	—			(2,518		)	—
	Certain consulting expense	(11,295		)	—			—
	Other expenses (including restructuring, (gain) loss on property and equipment, and start-up costs)	(6,538		)	(1,958		)	12
	Loss from operations for “All other”	$	(111,473	)	$	(76,669	)	$	(44,552	)
	The consolidated financial statements include revenue to customers by geographic region that are summarized as follows (in thousands):
		Fiscal Year
		2014			2013			2012
	Revenue:
	United States	$	342,805		$	296,442		$	246,661
	International	805,426			667,705			624,691
		Fiscal Year
		2014	2013	2012
	Revenue:
	United States	30%	31%	28%
	Asia	66	63	65
	Europe	4	6	5
	Central and South America	—	—	1
	Other	—	—	1
	The consolidated financial statements include the following long-lived asset amounts related to operations of the Company by geographic region (in thousands):
		Fiscal Year
		2014			2013			2012
	Long-lived tangible assets:
	United States	$	120,885		$	114,635		$	130,665
	International	75,111			76,891			67,256
	Sales, for geographic disclosure purposes, are based on the “sold to” address of the customer. The “sold to” address is not always an accurate representation of the location of final consumption of the Company’s components. Of the Company’s total revenue for fiscal 2014, approximately 41% ($468.0 million) was from customers in China and 17% ($190.6 million) from customers in Taiwan. Long-lived tangible assets primarily include property and equipment and at March 29, 2014, approximately $69.7 million (or 36%) of the Company’s total property and equipment was located in China.

Quarterly_Financial_Summary_Un

Quarterly Financial Summary (Unaudited)	12 Months Ended
	Mar. 29, 2014
Quarterly Financial Information Disclosure [Abstract]	'
QUARTERLY FINANCIAL SUMMARY (UNAUDITED)	'
	QUARTERLY FINANCIAL SUMMARY (UNAUDITED):
	Fiscal 2014 Quarter
	(in thousands, except
	per share data)	First				Second				Third				Fourth
	Revenue	$	292,996			$	310,716			$	288,520			$	255,999
	Gross profit	93,469				104,656				107,523				99,279
	Net income (loss)	1,561			(5)	5,892			(5)	6,235			(5),(6)	(1,046		)	(5),(7)
	Net income (loss) per share:
	Basic	$	0.01			$	0.02			$	0.02			$	(0.00	)
	Diluted	$	0.01			$	0.02			$	0.02			$	(0.00	)
	Fiscal 2013 Quarter
	(in thousands, except
	per share data)	First				Second				Third				Fourth
	Revenue	$	202,660			$	209,671			$	271,213		(2)	$	280,603		(3)
	Gross profit	64,254				66,535				86,810				88,216
	Net loss	(19,139		)	(1)	(16,456		)		(1,443		)	(2)	(15,961		)	(3),(4)
	Net loss per share:
	Basic	$	(0.07	)		$	(0.06	)		$	(0.01	)		$	(0.06	)
	Diluted	$	(0.07	)		$	(0.06	)		$	(0.01	)		$	(0.06	)
	1. In the first quarter of fiscal 2013, the Company realized a loss of $5.0 million related to the transfer of its MBE growth operations to IQE (see Note 6).
	2. Amalfi's results of operations (revenue of $5.4 million and an operating loss of $5.9 million) are included in the Company's Statement of Operations in the third quarter of fiscal 2013 (see Note 5).
	3. Amalfi's results of operations (revenue of $11.1 million and an operating loss of $3.6 million) are included in the Company's Statement of Operations in the fourth quarter of fiscal 2013 (see Note 5).
	4. Income tax expense for the fourth quarter of fiscal 2013 includes the effects of an increase of a valuation reserve against the U.K. net deferred tax asset as a result of the decision to phase out manufacturing at the U.K. facility (see Note 13).
	5. The Company recorded restructuring expenses of $2.9 million, $2.3 million, $3.0 million, and $2.9 million, in the first, second, third and fourth quarters of fiscal 2014, respectively (Note 12).
	6. In the third quarter of fiscal 2014, the Company recorded acquisition related expenses of $2.9 million (Note 7).
	7. In the fourth quarter of fiscal 2014, the Company impaired intangible assets of $11.3 million (Note 8) and recorded acquisition and integration related expenses of $2.2 million (Note 7).
	The Company uses a 52- or 53-week fiscal year ending on the Saturday closest to March 31 of each year. The first fiscal quarter of each year ends on the Saturday closest to June 30, the second fiscal quarter of each year ends on the Saturday closest to September 30 and the third fiscal quarter of each year ends on the Saturday closest to December 31. Each quarter of fiscal 2014 and fiscal 2013 contained a comparable number of weeks (13 weeks).

Valuation_and_Qualifying_Accou

Valuation and Qualifying Accounts	12 Months Ended
	Mar. 29, 2014
Valuation and Qualifying Accounts [Abstract]	'
Valuation and Qualifying Accounts	'
	Schedule II
	Valuation and Qualifying Accounts
	Fiscal Years Ended 2014, 2013 and 2012
	(In thousands)
		Balance at Beginning of Period		Additions Charged to Costs and Expenses		Deductions from Reserve			Balance at End of Period
	Year ended March 29, 2014
	Allowance for doubtful accounts	$	434	$	—	$	121	(i)	$	313
	Inventory reserve	21,644		6,982		2,053		(ii)	26,573
	Year ended March 30, 2013
	Allowance for doubtful accounts	$	353	$	116	$	35	(i)	$	434
	Inventory reserve	22,461		4,907		5,724		(ii)	21,644
	Year ended March 31, 2012
	Allowance for doubtful accounts	$	800	$	—	$	447	(i)	$	353
	Inventory reserve	20,082		6,161		3,782		(ii)	22,461
	(i) The Company wrote-off a fully reserved balance against the related receivable; write-offs totaled less than $0.1 million for fiscal 2014, less than $0.1 million for fiscal 2013 and $0.1 million for fiscal 2012.
	(ii) The Company sold excess inventory or wrote-off scrap related to quality and obsolescence against a fully reserved balance and reduced reserves based on the Company’s reserve policy.

The_Company_and_Its_Significan1

The Company and Its Significant Accounting Policies (Policies)	12 Months Ended
	Mar. 29, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Principles of Consolidation	'
	Principles of Consolidation
	The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation.
	The results of operations, assets and liabilities associated with the acquisition of Amalfi Semiconductor, Inc. (“Amalfi”) completed during fiscal 2013 have been included in the Consolidated Statements of Operations from the acquisition date (November 9, 2012) and are reflected in the Consolidated Balance Sheet as of March 30, 2013 (see Note 5).
	During the fourth quarter of fiscal 2014, the Company sold a portion of an equity method investment for $2.6 million which resulted in a gain of $1.5 million. As of March 29, 2014 and March 30, 2013, the carrying value of the equity investment is $1.7 million and $2.1 million, respectively. The investment is recorded in “Long-term investments” in the Consolidated Balance Sheets. The Company purchased raw materials from its equity investee totaling approximately $6.6 million, $7.0 million and $9.2 million, for fiscal years 2014, 2013 and 2012, respectively.
Accounting Periods	'
	Accounting Periods
	The Company uses a 52- or 53-week fiscal year ending on the Saturday closest to March 31 of each year. The most recent three fiscal years ended on March 29, 2014, March 30, 2013, and March 31, 2012. Fiscal years 2014, 2013 and 2012 were 52-week years.
Fair Value of Financial Instruments	'
	Fair Value of Financial Instruments
	The carrying values of cash and cash equivalents, accounts receivable, accounts payable and other accrued liabilities approximate fair values as of March 29, 2014 and March 30, 2013 (see Note 3 and Note 9).
Use of Estimates	'
	Use of Estimates
	The preparation of the Consolidated Financial Statements in conformity with accounting principles generally accepted in the U.S. requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. The actual results that we experience may differ materially from our estimates. The Company makes estimates for the returns reserve, rebates, allowance for doubtful accounts, inventory valuation including reserves, warranty reserves, income tax valuation, current and deferred income taxes, uncertain tax positions, non-marketable equity investments, other-than-temporary impairments of investments, goodwill, long-lived assets and other financial statement amounts on a regular basis and makes adjustments based on historical experiences and expected future conditions. Accounting estimates require difficult and subjective judgments and actual results may differ from the Company’s estimates.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents
	Cash and cash equivalents consist of demand deposit accounts, money market funds, and other temporary, highly- liquid investments with original maturities of three months or less when purchased.
Investments	'
	Investments
	Investments are accounted for in accordance with FASB ASC 320, “Investments – Debt and Equity Securities.”
	Available-for-Sale Investments
	Investments available-for-sale at March 29, 2014, and March 30, 2013, consisted of U.S. government/agency securities and auction rate securities.  Available-for-sale investments with an original maturity date greater than approximately three months and less than one year are classified as current investments. Available-for-sale investments with an original maturity date exceeding one year are classified as long-term.
	Available-for-sale securities are carried at fair value as determined by quoted market prices, with the unrealized gains and losses, net of tax, reported in "Other comprehensive (loss) income."  The cost of securities sold is based on the specific identification method and any realized gain or loss is included in “Other income (expense).”  The amortized cost of available-for-sale securities is adjusted for amortization of premium and accretion of discounts, which are included as a portion of interest.
	The Company assesses individual investments for impairment quarterly.  Investments are impaired when the fair value is less than the amortized cost.  If an investment is impaired, the Company evaluates whether the impairment is other-than-temporary.  A debt investment impairment is considered other-than-temporary if (i) the Company intends to sell the security, (ii) it is more likely than not that the Company will be required to sell the security before recovery of the entire amortized cost basis, or (iii) the Company does not expect to recover the entire amortized cost basis of the security (a credit loss).  Other-than-temporary declines in the Company's debt securities are recognized as a loss in the statement of operations if due to credit loss; all other losses on debt securities are recorded in "Other comprehensive (loss) income."  The previous amortized cost basis less the other-than-temporary impairment becomes the new cost basis and is not adjusted for subsequent recoveries in fair value.
Inventories	'
	Inventories
	Inventories are stated at the lower of cost or market determined using the average cost method. The Company’s business is subject to the risk of technological and design changes. The Company evaluates inventory levels quarterly against sales forecasts on a product family basis to evaluate its overall inventory risk. Reserves are adjusted to reflect inventory values in excess of forecasted sales which include management's analysis and assessment of overall inventory risk. In the event the Company sells inventory that had been covered by a specific inventory reserve, the sale is recorded at the actual selling price and the related cost of goods sold is recorded at the full inventory cost, net of the reserve. Abnormal production levels are charged to the income statement in the period incurred rather than as a portion of inventory cost.
Product Warranty	'
	Product Warranty
	The Company generally sells products with a limited warranty on product quality. The Company accrues for known warranty issues if a loss is probable and can be reasonably estimated, and accrues for estimated incurred but unidentified issues based on historical activity. The accrual and the related expense for known product warranty issues were not significant during the periods presented. Due to product testing and the short time typically between product shipment and the detection and correction of product failures and the historical rate of losses, the accrual and related expense for estimated incurred but unidentified issues were not significant during the periods presented.
Property and Equipment	'
	Property and Equipment
	Property and equipment are stated at cost, less accumulated depreciation. Depreciation of property and equipment is computed using the straight-line method over the estimated useful lives of the assets, ranging from one year to 20 years. The Company’s assets acquired under capital leases and leasehold improvements are amortized over the lesser of the asset life or lease term (which is reasonably assured) and included in depreciation.
	The Company performs a review if facts and circumstances indicate that the carrying amount of assets may not be recoverable or that the useful life is shorter than had originally been estimated. The Company assesses the recoverability of the assets held for use by comparing the projected undiscounted net cash flows associated with the related asset or group of assets over their remaining estimated useful lives against their respective carrying amounts. Impairment, if any, is based on the excess of the carrying amount over the fair value of those assets. If the Company determines that the useful lives are shorter than the Company had originally estimated, the net book value of the assets is depreciated over the newly determined remaining useful lives. The Company identifies property and equipment as “held for sale” based on the current expectation that, more likely than not, an asset or asset group will be sold or otherwise disposed. The held for sale assets cease depreciation once the assets are classified to the held for sale category at their fair market value less costs to sell.
	The Company capitalizes the portion of the interest expense related to certain assets that are not ready for their intended use and this amount is depreciated over the estimated useful lives of the qualified assets. The Company additionally records capital-related government grants earned as a reduction to property and equipment and depreciates such grants over the estimated useful lives of the associated assets.
Other Receivables	'
	Other Receivables
	The Company records miscellaneous non-product receivables that are collectible within 12 months in “Other receivables,” such as value-added tax receivables ($10.1 million as of March 29, 2014 and $13.9 million as of March 30, 2013, which are reported on a net basis), interest receivables and other miscellaneous items.
Intangible Assets and Goodwill	'
	Goodwill and Intangible Assets
	The value of the Company’s goodwill and purchased intangible assets could be impacted by future adverse changes such as: (i) future declines in RFMD’s operating results, (ii) a decline in the value of technology company stocks, including the value of RFMD’s common stock, (iii) a prolonged or more significant slowdown in the worldwide economy or the semiconductor industry, or (iv) failure to meet the performance projections included in RFMD’s forecasts of future operating results.
	Goodwill
	The Company has determined that its reporting units at the fiscal 2014 annual measurement date were CPG, MPG and CSG for purposes of allocating and testing goodwill. In evaluating its reporting units, the Company first considers its operating segments and related components in accordance with FASB guidance. Goodwill is allocated to the reporting units that are expected to benefit from the synergies of the business combinations generating the underlying goodwill. As of March 29, 2014, $93.6 million of the Company’s goodwill balance is allocated to the MPG reporting unit and $10.3 million is allocated to the CPG reporting unit.
	Goodwill is recorded when the purchase price paid for a business exceeds the estimated fair value of the net identified tangible and intangible assets acquired. The Company evaluates its goodwill for potential impairment on an annual basis on the first day of the fourth quarter in each fiscal year, or more frequently if events or circumstances indicate that an impairment in the value of goodwill recorded on the Company's balance sheet may exist. In fiscal 2013, the Company adopted FASB ASU 2011-08 "Intangibles - Goodwill and Other (Topic 350): Testing Goodwill for Impairment," which provides entities with an option to perform a qualitative assessment (commonly referred to as "step zero") to determine whether further quantitative analysis for impairment of goodwill is necessary. In performing step zero for the goodwill impairment test, the Company is required to make assumptions and judgments including but not limited to the following: the evaluation of macroeconomic conditions as related to the Company's business, industry and market trends, and the overall future financial performance of the Company's reporting units and future opportunities in the markets in which the reporting units operate. The Company also considers recent fair value calculations of its reporting units as well as cost factors such as changes in raw materials, labor or other costs. If impairment indicators are present after performing step zero, the Company would perform a quantitative impairment analysis to estimate the fair value of goodwill. In doing so, the Company would estimate future revenue, consider market factors and estimate the Company's future profitability and cash flows. Based on these key assumptions, judgments and estimates, the Company determines whether it needs to record an impairment charge to reduce the value of the goodwill carried on its balance sheet to the estimated fair value. Assumptions, judgments and estimates about future values are complex and often subjective and can be affected by a variety of factors, including external factors such as industry and economic trends, and internal factors such as changes in the Company's business strategy or internal forecasts. Although the Company believes the assumptions, judgments and estimates it has made have been reasonable and appropriate, different assumptions, judgments and estimates could materially affect its results of operations.
	The Company performed a step zero analysis for its goodwill impairment test as of the annual measurement date. As a result of this analysis, no further quantitative impairment test was deemed necessary for fiscal 2014. There was no impairment of goodwill as a result of the Company's annual impairment tests completed during the fourth quarters of fiscal years 2013 and 2012.
	Intangible Assets
	Intangible assets are recorded when such assets are acquired by purchase or license. Finite-lived intangible assets consist primarily of technology licenses, customer relationships, a wafer supply agreement and developed technology resulting from business combinations and are subject to amortization. Indefinite-lived intangible assets consist of in-process research and development (IPRD).
	Technology licenses are recorded at cost and amortized on a straight-line basis over the lesser of the estimated useful life of the technology or the term of the license agreement, ranging from approximately six to 15 years.
	The fair value of customer relationships acquired prior to fiscal 2013 was based on the benefit derived from the incremental revenue and related cash flows as a direct result of the customer relationship. These forecasted cash flows are discounted to present value using an appropriate discount rate. The fair value of customer relationships acquired during fiscal 2013 was determined based on an income approach using the “with and without method," in which the value of the asset is determined by the difference in discounted cash flows of the profitability of the Company "with" the asset and the profitability of the Company "without" the asset. Customer relationships are amortized on a straight-line basis over the estimated useful life, ranging from three to ten years.
	The fair value of developed technology acquired prior to fiscal 2013 was determined by discounting forecasted cash flows directly related to the existing product technology, net of returns on contributory assets. The fair value of developed technology acquired during fiscal 2013 was determined based on an income approach using the "excess earnings method," which estimated the value of the intangible assets by discounting the future projected earnings of the asset to present value as of the valuation date. Developed technology is amortized on a straight-line basis over the estimated useful life of six years.
	The fair value of the wafer supply agreement was determined using the incremental income method, which is a discounted cash flow method within the income approach. Under this method, the fair value was estimated by discounting to present value the additional savings from expense reductions in operations at a discount rate to reflect the risk inherent in the wafer supply agreement as well as any tax benefits. The wafer supply agreement is amortized on a units of use activity method and has a useful life of approximately four years.
	IPRD is recorded at fair value as of the date of acquisition as an indefinite-lived intangible asset until the completion or abandonment of the associated research and development efforts or impairment. The fair value of the acquired IPRD was determined based on an income approach using the "excess earnings method," which estimated the value of the intangible assets by discounting the future projected earnings of the asset to present value as of the valuation date. Upon completion of development, acquired IPRD assets are transferred to finite-lived intangible assets and amortized over their useful lives. See Note 8 for additional information regarding an impairment of IPRD assets recorded in the fourth quarter of fiscal 2014.
	The Company regularly reviews identified intangible assets to determine if facts and circumstances indicate that the useful life is shorter than the Company originally estimated or that the carrying amount of the assets may not be recoverable. If such facts and circumstances exist, the Company assesses the recoverability of identified intangible assets by comparing the projected undiscounted net cash flows associated with the related asset or group of assets over their remaining lives against their respective carrying amounts. Impairments, if any, are based on the excess of the carrying amount over the fair value of those assets and occur in the period in which the impairment determination was made.
Revenue Recognition	'
	Revenue Recognition
	The Company's net revenue is generated principally from sales of semiconductor products. The Company recognizes revenue from product sales when the fundamental criteria are met, such as the time at which the title and risk and rewards of product ownership are transferred to the customer, price and terms are fixed or determinable, no significant vendor obligation exists and collection of the resulting receivable is reasonably assured. Sales of products are generally made through either the Company's sales force, manufacturers' representatives or through a distribution network. Revenue from the majority of the Company’s products is recognized upon shipment of the product to the customer from a Company-owned or third-party location. Some revenue is recognized upon receipt of the shipment by the customer. The Company has limited rebate programs offering price protection to certain distributors. These rebates represent less than 2% of net revenue and can be reasonably estimated based on specific criteria included in the rebate agreements and other known factors at the time. Reductions in revenue are recorded during the period in which the revenue related to those rebate agreements is recognized.
	The Company also recognizes a portion of its net revenue through other agreements such as non-recurring engineering fees and cost-plus contracts for research and development work, royalty income, intellectual property (IP) revenue, and service revenue. These agreements are collectively less than 1% of consolidated revenue on an annual basis. Revenue from non-recurring engineering fees is recognized when the service is completed or upon certain milestones, as provided for in the agreements. Revenue from cost plus contracts is recognized on the percentage of completion method based on the costs incurred to date and the total contract amount, plus the contractual fee. Royalty income is recognized based on a percentage of sales of the relevant product reported by licensees during the period. The Company additionally licenses or sells its rights to use portions of its IP portfolio, which includes certain patent rights useful in the manufacture and sales of certain products. IP revenue recognition is dependent on the terms of each agreement. The Company will recognize IP revenue (i) upon delivery of the IP and (ii) if the Company has no substantive future obligation to perform under the arrangement. The Company will defer recognition of IP revenue where future performance obligations are required to earn the revenue or the revenue is not guaranteed. Revenue from services is recognized during the period that the service is performed.
	Accounts receivable are recorded for all revenue items listed above. The Company evaluates the collectability of accounts receivable based on a combination of factors. In cases where the Company is aware of circumstances that may impair a specific customer’s ability to meet its financial obligations subsequent to the original sale, the Company will record an allowance against amounts due, and thereby reduce the receivable to the amount the Company reasonably believes will be collected. For all other customers, the Company recognizes allowances for doubtful accounts based on the length of time the receivables are past due, industry and geographic concentrations, the current business environment and the Company’s historical experience.
	The Company's terms and conditions do not give its customers a right of return associated with the original sale of its products. However, the Company will authorize sales returns under certain circumstances, which include perceived quality problems, courtesy returns and like-kind exchanges. The Company evaluates its estimate of returns by analyzing all types of returns and the timing of such returns in relation to the original sale. Reserves are adjusted to reflect changes in the estimated returns versus the original sale of product.
Shipping and Handling Cost	'
	Shipping and Handling Cost
	The Company recognizes amounts billed to a customer in a sale transaction related to shipping and handling as revenue. The costs incurred by the Company for shipping and handling are classified as cost of goods sold in the Consolidated Statements of Operations.
Research and Development	'
	Research and Development
	The Company charges all research and development costs to expense as incurred.
Advertising Costs	'
	Advertising Costs
	The Company expenses advertising costs as incurred.
Income Taxes	'
	Income Taxes
	The Company accounts for income taxes under the liability method which requires recognition of deferred tax assets and liabilities for the temporary differences between the financial reporting and tax basis of assets and liabilities and for tax carryforwards. Deferred tax assets and liabilities are measured using the enacted statutory tax rates in effect for the years in which the differences are expected to reverse. A valuation allowance is provided against deferred tax assets to the extent the Company determines it is more likely than not (a likelihood of more than 50 percent) that some portion or all of its deferred tax assets will not be realized.
	A minimum recognition threshold is required to be met before the Company recognizes the benefit of an income tax position in its financial statements. The Company’s policy is to recognize accrued interest and penalties, if incurred, on any unrecognized tax benefits as a component of income tax expense.
	It is the Company’s policy to invest the earnings of foreign subsidiaries indefinitely outside the U.S. Accordingly, the Company does not provide an allowance for U.S. income taxes on unremitted foreign earnings.
Share-Based Compensation	'
	Share-Based Compensation
	Under FASB ASC 718, “Compensation – Stock Compensation” (ASC 718), share-based compensation cost is measured at the grant date, based on the estimated fair value of the award using an option pricing model (Black-Scholes), and is recognized as expense over the employee's requisite service period.
	As of March 29, 2014, total remaining unearned compensation cost related to nonvested restricted stock units and options was $22.8 million, which will be amortized over the weighted-average remaining service period of approximately 1.2 years.
Foreign Currency Translation	'
	Foreign Currency Translation
	The financial statements of foreign subsidiaries have been translated into U.S. dollars in accordance with FASB ASC 830, “Foreign Currency Matters.”  The functional currency for most of the Company’s international operations is the U.S. dollar.  The functional currency for the remainder of the Company’s foreign subsidiaries is the local currency. Assets and liabilities denominated in foreign currencies are translated using the exchange rates on the balance sheet dates.  Revenues and expenses are translated using the average exchange rates throughout the year. Translation adjustments are shown separately as a component of “Accumulated other comprehensive (loss) income” within “Shareholders’ equity” in the Consolidated Balance Sheets.  Foreign currency transaction gains or losses (transactions denominated in a currency other than the functional currency) are reported in “Other income (expense)” in the Consolidated Statements of Operations.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In July 2013, the FASB issued ASU 2013-11, “Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists” ("ASU 2013-11") ("ASU 2013-11"). ASU 2013-11 requires an unrecognized tax benefit, or a portion of an unrecognized tax benefit, to be presented in the financial statements as a reduction of a deferred tax asset or a tax credit carryforward, excluding certain exceptions. This ASU will be effective for the Company beginning with the first quarter of fiscal 2015 and the Company does not believe that the adoption of this standard will significantly impact its consolidated financial statements.
	In February 2013, the FASB issued ASU 2013-02, "Reporting of Amounts Reclassified out of Accumulated Other Comprehensive Income." ASU 2013-02 requires reporting the effect of significant reclassifications out of accumulated other comprehensive income on the respective line items in net income if the amount being reclassified is required to be reclassified in its entirety to net income. For other amounts that are not required to be reclassified in their entirety to net income in the same reporting period, an entity is required to cross-reference other disclosures that provide additional detail about these amounts. The amendments do not change the current requirements for reporting net income or other comprehensive income in the financial statements. The Company adopted this guidance in the first quarter of fiscal 2014. The adoption of this guidance affected the presentation of comprehensive income, but did not impact the Company's financial position, results of operations or cash flows.

Concentrations_of_Credit_Risk_

Concentrations of Credit Risk (Tables)	12 Months Ended
	Mar. 29, 2014
Risks and Uncertainties [Abstract]	'
Revenue from significant customers	'
	Revenue from significant customers, those representing 10% or more of total revenue for the respective periods, is summarized as follows:
		Fiscal Year
		2014	2013	2012
	Samsung Electronics, Co., Ltd. (Samsung)	25%	22%	22%
	Nokia Corporation (Nokia)	N/A	N/A	14%

Investments_and_Fair_Value_Mea1

Investments and Fair Value Measurements (Tables)	12 Months Ended
	Mar. 29, 2014
Investments and Fair Value Measurements [Abstract]	'
Available-for-sale securities	'
	The following is a summary of available-for-sale securities as of March 29, 2014 and March 30, 2013 (in thousands):
		Available-for-Sale Securities
		Cost		Gross		Gross			Estimated Fair
				Unrealized		Unrealized			Value
				Gains		Losses
	March 29, 2014
	U.S. government/agency securities	$	133,064	$	1	$	—		$	133,065
	Auction rate securities	2,150		—		—			2,150
	Money market funds	48,800		—		—			48,800
		$	184,014	$	1	$	—		$	184,015
	March 30, 2013
	U.S. government/agency securities	$	77,988	$	3	$	(4	)	$	77,987
	Auction rate securities	2,150		—		—			2,150
	Money market funds	26,328		—		—			26,328
		$	106,466	$	3	$	(4	)	$	106,465
Amortized cost of available-for-sale investments in debt securities with contractual maturities	'
	The amortized cost of investments in debt securities with contractual maturities is as follows (in thousands):
		March 29, 2014				March 30, 2013
		Cost		Estimated		Cost			Estimated
				Fair Value					Fair Value
	Due in less than one year	$	181,864	$	181,865	$	104,316		$	104,315
	Due after ten years	2,150		2,150		2,150			2,150
	Total investments in debt securities	$	184,014	$	184,015	$	106,466		$	106,465
Fair value of the financial assets measured at fair value on a recurring basis	'
	The fair value of the financial assets measured at fair value on a recurring basis was determined using the following levels of inputs as of March 29, 2014 and March 30, 2013 (in thousands):
		Total		Quoted Prices In		Significant Other
				Active Markets For		Observable Inputs
				Identical Assets		(Level 2)
				(Level 1)
	March 29, 2014
	U.S. government/agency securities	$	133,065	$	133,065	$	—
	Auction rate securities	2,150		—		2,150
	Money market funds	48,800		48,800		—
		$	184,015	$	181,865	$	2,150
	March 30, 2013
	U.S. government/agency securities	$	77,987	$	77,987	$	—
	Auction rate securities	2,150		—		2,150
	Money market funds	26,328		26,328		—
		$	106,465	$	104,315	$	2,150

Inventories_Tables

Inventories (Tables)	12 Months Ended
	Mar. 29, 2014
Inventory Disclosure [Abstract]	'
Components of inventories	'
	The components of inventories, net of reserves, are as follows (in thousands):
		Fiscal Year
		2014		2013
	Raw materials	$	32,927	$	45,656
	Work in process	51,544		64,108
	Finished goods	41,232		51,429
	Total inventories	$	125,703	$	161,193

Business_Acquisition_Tables

Business Acquisition (Tables)	12 Months Ended
	Mar. 29, 2014
BUSINESS ACQUISITION DISCLOSURE [Abstract]	'
Schedule of Purchase Price Allocation [Table Text Block]	'
	The final purchase price was allocated to Amalfi's assets and liabilities based upon fair values as determined by the Company, as follows (in thousands):
	Cash and cash equivalents	$	37,575
	Accounts receivable	4,809
	Inventories	10,660
	Prepaid expenses and other assets	933
	Property and equipment	1,164
	Intangible assets (Note 8)	31,900
	Goodwill	10,254
	Total assets	97,295
	Accounts payable and accrued liabilities	(11,293		)
	Total purchase price	$	86,002
Business Acquisition, Pro Forma Information [Table Text Block]	'
	The following unaudited pro forma consolidated financial information for fiscal years 2013 and 2012, assumes that the Amalfi acquisition, which closed on November 9, 2012, was completed as of April 3, 2011 (in thousands, except per share data):
		Fiscal Year
		2013			2012
	Revenue	$	995,441		$	891,262
	Net loss	(62,114		)	(20,607		)
	Basic net loss per common share	(0.22		)	(0.07		)
	Diluted net loss per common share	(0.22		)	(0.07		)

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Mar. 29, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Schedule of Goodwill [Table Text Block]	'
	The changes in the carrying amount of goodwill for fiscal years 2013 and 2014, are as follows (in thousands):
	Balance as of March 31, 2012	$	95,628
	Amalfi acquisition (Note 5)	10,191
	Written off due to transfer of MBE operations (Note 6)	(973		)
	Balance as of March 30, 2013	$	104,846
	Written off due to sale of the U.K. facility	(1,008		)
	Amalfi acquisition adjustments (Note 5)	63
	Balance as of March 29, 2014*	$	103,901
	*As of March 29, 2014, the Company’s goodwill balance of $103.9 million was comprised of gross goodwill of $725.5 million less accumulated impairment losses of $619.6 million, a write-off of $1.0 million due to the transfer of the MBE operations, and a write-off of $1.0 million due to the sale of the U.K. facility.
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Table Text Block]	'
	The following summarizes certain information regarding gross carrying amounts and amortization of intangibles (in thousands):
		March 29, 2014					March 30, 2013
		Gross			Accumulated		Gross		Accumulated
		Carrying			Amortization		Carrying		Amortization
		Amount					Amount
	Intangible Assets:
	Technology licenses	$	12,006		$	10,418	$	10,346	$	10,118
	Customer relationships	47,103			26,391		47,103		21,644
	Developed technology	102,163			78,540		102,163		61,907
	Wafer supply agreement	20,443			11,376		20,443		4,489
	In-process research and development	—			—		11,300		—
	Total	$	181,715		$	126,725	$	191,355	$	98,158
Schedule of Acquired Finite-Lived And Indefinite-Lived Intangible Assets by Major Class [Table Text Block]	'
	In fiscal 2013, as a result of the acquisition of Amalfi, intangibles increased by $31.9 million. The following table sets forth the components of these intangible assets (in thousands):
		Fair Value
	Developed technology	$	19,200
	Customer relationships	1,400
	In-process research and development	11,300
	Total	$	31,900
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	'
	The following table provides the Company's estimated future amortization expense based on current amortization periods for the periods indicated (in thousands):
	Fiscal Year	Estimated
		Amortization
		Expense
	2015	$	22,533
	2016	11,964
	2017	8,367
	2018	7,664
	2019	4,904

Debt_Tables

Debt (Tables)	12 Months Ended
	Mar. 29, 2014
Debt Disclosure [Abstract]	'
Debt balances	'
	Debt at March 29, 2014 and March 30, 2013 is as follows (in thousands):
		March 29, 2014				March 30, 2013
	Convertible subordinated notes due 2014, net of discount	$	87,263			$	82,035
	Total debt	87,263				82,035
	Less current portion	87,263				—
	Total long-term debt	$	—			$	82,035
Details of convertible debt	'
	The following tables provide additional information about the Notes, which are subject to ASC 470-20 (in thousands):
		2012 Notes								2014 Notes
		2014				2013				2014				2013
	Carrying amount of the equity component (common stock)	$	19,954		*	$	19,954		*	$	33,241			$	33,241
	Principal amount of the convertible subordinated notes	$	—			$	—			$	87,503			$	87,503
	Unamortized discount of the liability	—				—				(240		)		(5,468		)
	component
	Net carrying amount of liability component	$	—			$	—			$	87,263			$	82,035
	* The 2012 Notes became due and were repaid on April 15, 2012. The carrying amount of the equity component, which is recorded in common stock on the Company's Consolidated Balance Sheets is a permanent component of equity per ASC 470-20.
			2012 Notes								2014 Notes
			2013				2012				2014				2013			2012
	Effective interest rate on liability component		7.3		%		7.3		%		7.2		%		7.2		%	7.2		%
	Cash interest expense recognized		$	11			$	285			$	873			$	1,023		$	1,342
	Non-cash interest expense recognized (discount amortization)		$	69			$	2,372			$	5,228			$	5,688		$	6,958

Commitments_and_Contingent_Lia1

Commitments and Contingent Liabilities (Tables)	12 Months Ended
	Mar. 29, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Minimum future lease payments	'
	Minimum future lease payments under non-cancelable capital and operating leases as of March 29, 2014, are as follows (in thousands):
	Fiscal Year	Capital		Operating
	2015	$	73	$	8,899
	2016	18		7,761
	2017	—		6,926
	2018	—		5,292
	2019	—		4,118
	Thereafter	—		15,847
	Total minimum payment	91		$	48,843
	Less amounts representing interest	4
	Present value of minimum lease payments	87
	Less current portion	69
	Obligations under capital leases, less current portion	$	18

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Mar. 29, 2014
Income Tax Disclosure [Abstract]	'
Income before income taxes	'
	Income (loss) before income taxes consists of the following components (in thousands):
		Fiscal Year
		2014				2013				2012
	United States	$	(7,120	)		$	(72,895	)		$	(45,031	)
	Foreign	30,993				46,996				60,659
	Total	$	23,873			$	(25,899	)		$	15,628
Components of the income tax (provision) benefit	'
	The components of the income tax provision are as follows (in thousands):
		Fiscal Year
		2014				2013				2012
	Current (expense) benefit:
	Federal	$	(875	)		$	(515	)		$	1,106
	State	24				73				73
	Foreign	(9,939		)		(9,862		)		(11,667		)
		(10,790		)		(10,304		)		(10,488		)
	Deferred (expense) benefit:
	Federal	$	488			$	(214	)		$	(580	)
	State	59				(13		)		(35		)
	Foreign	(988		)		(16,569		)		(3,668		)
		(441		)		(16,796		)		(4,283		)
	Total	$	(11,231	)		$	(27,100	)		$	(14,771	)
Reconciliation of the (provision for) or benefit from income taxes to income tax(expense) or benefit computed by applying the statutory federal income tax rate to pre-tax income.	'
	A reconciliation of the (provision for) or benefit from income taxes to income tax (expense) or benefit computed by applying the statutory federal income tax rate to pre-tax (loss) income for fiscal years 2014, 2013 and 2012 is as follows (dollars in thousands):
		Fiscal Year
		2014						2013					2012
		Amount			Percentage			Amount			Percentage		Amount			Percentage
	Income tax (expense) benefit at statutory federal rate	$	(8,355	)	35	%		$	9,065		35	%	$	(5,470	)	35	%
	Decrease (increase) resulting from:
	State benefit (provision), net of federal (provision) benefit	75			(0.31	)		(827		)	(3.19	)	849			(5.43	)
	Research and development credits	3,177			(13.31	)		6,257			24.16		3,422			(21.90	)
	Foreign tax credits	574			(2.41	)		2,434			9.39		1,998			(12.78	)
	Effect of changes in income tax rate applied to net deferred tax assets	(65		)	0.27			(1,250		)	(4.83	)	(1,568		)	10.04
	Foreign tax rate difference	636			(2.66	)		3,218			12.43		7,486			(47.90	)
	Change in valuation allowance	5,890			(24.67	)		(40,675		)	(157.05	)	(20,408		)	130.58
	Repurchase of convertible subordinated notes	—			—			438			1.69		622			(3.98	)
	Adjustments to net deferred tax assets	2,939			(12.31	)		(872		)	(3.37	)	597			(3.82	)
	Share-based compensation	(635		)	2.66			(2,108		)	(8.14	)	(66		)	0.42
	Tax reserve adjustments	(1,482		)	6.21			(515		)	(1.99	)	2,084			(13.33	)
	Deemed dividend	(1,122		)	4.7			(1,749		)	(6.75	)	(3,971		)	25.41
	Write-off U.K. gross deferred tax assets	(12,699		)	53.19			—			—		—			—
	Other income tax benefit (expense)	(164		)	0.69			(516		)	(1.99	)	(346		)	2.21
		$	(11,231	)	47.05	%		$	(27,100	)	(104.64	)%	$	(14,771	)	94.52	%
Significant components of net deferred income taxes	'
	Significant components of the Company’s net deferred income taxes are as follows (in thousands):
		Fiscal Year
		2014				2013
	Deferred income tax assets:
	Inventory reserve	$	9,813			$	8,107
	Basis in stock and other investments	2,748				5,547
	Equity compensation	17,860				18,574
	Accumulated depreciation/basis difference	29,260				42,541
	Net operating loss carry-forwards	37,676				57,632
	Research and other credits	71,406				66,796
	Other deferred assets	9,189				10,643
	Total deferred income tax assets	177,952				209,840
	Valuation allowance	(143,264		)		(164,244		)
	Total deferred income tax assets, net of valuation allowance	$	34,688			$	45,596
	Deferred income tax liabilities:
	Amortization and purchase accounting basis difference	$	(10,862	)		$	(18,183	)
	Convertible debt discount	(83		)		(1,918		)
	Deferred gain	(4,994		)		(6,320		)
	Other deferred liabilities	(501		)		(744		)
	Total deferred income tax liabilities	(16,440		)		(27,165		)
	Net deferred income tax assets	$	18,248			$	18,431
	Amounts included in consolidated balance sheets:
	Current assets	$	4,419			$	2,760
	Current liabilities	(200		)		(329		)
	Non-current assets	14,913				17,221
	Non-current liabilities	(884		)		(1,221		)
	Net deferred income tax assets	$	18,248			$	18,431
Reconciliation of gross unrecognized tax benefits	'
	A reconciliation of the fiscal 2012 through fiscal 2014 beginning and ending amount of gross unrecognized tax benefits is as follows (in thousands):
		Fiscal Year
		2014				2013				2012
	Beginning balance	$	37,917			$	31,727			$	32,941
	Additions based on positions related to current year	2,181				2,209				1,067
	Additions for tax positions in prior years	229				4,780				450
	Reductions for tax positions in prior years	(904		)		(482		)		(2,699		)
	Expiration of Statute of Limitations	—				(317		)		(32		)
	Settlements	—				—				—
	Ending Balance	$	39,423			$	37,917			$	31,727

Net_Income_Loss_Per_Share_Tabl

Net Income (Loss) Per Share (Tables)	12 Months Ended
	Mar. 29, 2014
Earnings Per Share [Abstract]	'
Reconciliation of the numerators and denominators in the computation of basic and diluted net income (loss) per share	'
	The following table sets forth the computation of basic and diluted net income (loss) per share (in thousands, except per share data):
		For Fiscal Year
		2014		2013			2012
	Numerator:
	Numerator for basic and diluted net income (loss) per share — net income (loss) available to common shareholders	$	12,642	$	(52,999	)	$	857
	Denominator:
	Denominator for basic net income (loss) per share — weighted average shares	281,996		278,602			276,289
	Effect of dilutive securities:
	Share-based awards	6,078		—			6,287
	Denominator for diluted net income (loss) per share — adjusted weighted average shares and assumed conversions	288,074		278,602			282,576
	Basic net income (loss) per share	$	0.04	$	(0.19	)	$	0
	Diluted net income (loss) per share	$	0.04	$	(0.19	)	$	0

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	12 Months Ended
	Mar. 29, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Summary of activity of the Company's director and employee stock option plans	'
	A summary of activity of the Company’s director and employee stock option plans follows:
		Shares		Weighted-				Weighted-Average Remaining Contractual Term (in years)		Aggregate
		(in thousands)		Average						Intrinsic
				Exercise						Value
				Price						(in thousands)
	Outstanding as of March 30, 2013	10,634		$	5.92
	Granted	358		$	5.03
	Exercised	-2,267		$	5.48
	Canceled	-1,701		$	6.94
	Forfeited	-11		$	5.92
	Outstanding as of March 29, 2014	7,013		$	5.77			3.11		$	13,558
	Vested and expected to vest as of	7,003		$	5.77			3.1		$	13,527
	29-Mar-14
	Options exercisable as of March 29, 2014	6,476		$	5.83			2.68		$	12,102
Assumptions used for stock option plans	'
	The fair value of each option award is estimated on the date of grant using a Black-Scholes option-pricing model based on the assumptions noted in the following tables:
		Fiscal Year
		2014			2013			2012
	Expected volatility	43.2		%	51.6		%	57.2		%
	Expected dividend yield	0		%	0		%	0		%
	Expected term (in years)	5.5			5.5			5.4
	Risk-free interest rate	1.4		%	0.8		%	1.4		%
	Weighted-average grant-date fair value of options granted during the period	$	2.08		$	1.8		$	3.19
Restricted share plans	'
	The following activity has occurred with respect to restricted stock unit awards:
		Shares			Weighted-Average
		(in thousands)			Grant-Date
					Fair Value
	Balance at March 30, 2013	10,547			$	4.63
	Granted	5,328			4.59
	Vested	-5,713			4.76
	Forfeited	-972			4.53
	Balance at March 29, 2014	9,190			$	4.53

Shareholders_Equity_Tables

Shareholders' Equity (Tables)	12 Months Ended
	Mar. 29, 2014
Equity [Abstract]	'
Common stock reserved for future issuance	'
	At March 29, 2014, the Company had reserved a total of approximately 48.7 million of its authorized 500.0 million shares of common stock for future issuance as follows (in thousands):
	Outstanding stock options under formal directors’ and employees’ stock option plans	7,013
	Possible future issuance under Company stock option plans	20,266
	Employee stock purchase plan	3,812
	Restricted share-based units granted	9,190
	Possible future issuance pursuant to convertible subordinated notes*	8,444
	Total shares reserved	48,725
	*The 2014 Notes became due on April 15, 2014, and the remaining principal balance of $87.5 million was paid with cash on hand, therefore, the conversion feature will not be triggered.

Operating_Segment_and_Geograph1

Operating Segment and Geographical Information (Tables)	12 Months Ended
	Mar. 29, 2014
Segment Reporting [Abstract]	'
Summary of details of reportable segments	'
	The following tables present details of the Company’s reportable segments and a reconciliation of the “All other” category (in thousands):
		Fiscal Year
		2014			2013			2012
	Revenue:
	CPG	$	935,313		$	761,425		$	664,242
	MPG	212,897			202,722			207,110
	Other operating segment	21			—			—
	Total revenue	$	1,148,231		$	964,147		$	871,352
	Income (loss) from operations:
	CPG	$	109,862		$	52,574		$	61,776
	MPG	32,315			11,181			10,930
	Other operating segment	(3,363		)	(2,766		)	(3,511		)
	All other	(111,473		)	(76,669		)	(44,552		)
	Income (loss) from operations	$	27,341		$	(15,680	)	$	24,643
	Interest expense	$	(5,983	)	$	(6,532	)	$	(10,997	)
	Interest income	179			249			468
	Loss on retirement of convertible subordinated notes	—			(2,756		)	(908		)
	Other income (expense)	2,336			(1,180		)	2,422
	Income (loss) before income taxes	$	23,873		$	(25,899	)	$	15,628
Summary of reconciliation of All other category	'
		Fiscal Year
		2014			2013			2012
	Reconciliation of “All other” category:
	Share-based compensation expense	$	(29,901	)	$	(30,819	)	$	(26,174	)
	Amortization of intangible assets	(28,638		)	(23,107		)	(18,390		)
	Acquired inventory step-up and revaluation	—			(3,140		)	—
	Impairment of intangible asset	(11,300		)	—			—
	Acquisition and integration related costs	(8,105		)	(2,765		)	—
	Restructuring and disposal costs associated with the phase out of manufacturing and sale of the U.K. facility	(8,118		)	(1,365		)	—
	Loss on asset transfer transaction	—			(5,042		)	—
	IPR litigation costs	(7,578		)	(5,955		)	—
	Inventory revaluation resulting from transfer of MBE operations	—			(2,518		)	—
	Certain consulting expense	(11,295		)	—			—
	Other expenses (including restructuring, (gain) loss on property and equipment, and start-up costs)	(6,538		)	(1,958		)	12
	Loss from operations for “All other”	$	(111,473	)	$	(76,669	)	$	(44,552	)
Sales to customers by geographic region	'
	The consolidated financial statements include revenue to customers by geographic region that are summarized as follows (in thousands):
		Fiscal Year
		2014			2013			2012
	Revenue:
	United States	$	342,805		$	296,442		$	246,661
	International	805,426			667,705			624,691
		Fiscal Year
		2014	2013	2012
	Revenue:
	United States	30%	31%	28%
	Asia	66	63	65
	Europe	4	6	5
	Central and South America	—	—	1
	Other	—	—	1
Long-lived assets by geographic region	'
	The consolidated financial statements include the following long-lived asset amounts related to operations of the Company by geographic region (in thousands):
		Fiscal Year
		2014			2013			2012
	Long-lived tangible assets:
	United States	$	120,885		$	114,635		$	130,665
	International	75,111			76,891			67,256

Quarterly_Financial_Summary_Un1

Quarterly Financial Summary (Unaudited) (Tables)	12 Months Ended
	Mar. 29, 2014
Quarterly Financial Information Disclosure [Abstract]	'
Quarterly Financial Summary (Unaudited)	'
	Fiscal 2014 Quarter
	(in thousands, except
	per share data)	First				Second				Third				Fourth
	Revenue	$	292,996			$	310,716			$	288,520			$	255,999
	Gross profit	93,469				104,656				107,523				99,279
	Net income (loss)	1,561			(5)	5,892			(5)	6,235			(5),(6)	(1,046		)	(5),(7)
	Net income (loss) per share:
	Basic	$	0.01			$	0.02			$	0.02			$	(0.00	)
	Diluted	$	0.01			$	0.02			$	0.02			$	(0.00	)
	Fiscal 2013 Quarter
	(in thousands, except
	per share data)	First				Second				Third				Fourth
	Revenue	$	202,660			$	209,671			$	271,213		(2)	$	280,603		(3)
	Gross profit	64,254				66,535				86,810				88,216
	Net loss	(19,139		)	(1)	(16,456		)		(1,443		)	(2)	(15,961		)	(3),(4)
	Net loss per share:
	Basic	$	(0.07	)		$	(0.06	)		$	(0.01	)		$	(0.06	)
	Diluted	$	(0.07	)		$	(0.06	)		$	(0.01	)		$	(0.06	)
	1. In the first quarter of fiscal 2013, the Company realized a loss of $5.0 million related to the transfer of its MBE growth operations to IQE (see Note 6).
	2. Amalfi's results of operations (revenue of $5.4 million and an operating loss of $5.9 million) are included in the Company's Statement of Operations in the third quarter of fiscal 2013 (see Note 5).
	3. Amalfi's results of operations (revenue of $11.1 million and an operating loss of $3.6 million) are included in the Company's Statement of Operations in the fourth quarter of fiscal 2013 (see Note 5).
	4. Income tax expense for the fourth quarter of fiscal 2013 includes the effects of an increase of a valuation reserve against the U.K. net deferred tax asset as a result of the decision to phase out manufacturing at the U.K. facility (see Note 13).
	5. The Company recorded restructuring expenses of $2.9 million, $2.3 million, $3.0 million, and $2.9 million, in the first, second, third and fourth quarters of fiscal 2014, respectively (Note 12).
	6. In the third quarter of fiscal 2014, the Company recorded acquisition related expenses of $2.9 million (Note 7).
	7. In the fourth quarter of fiscal 2014, the Company impaired intangible assets of $11.3 million (Note 8) and recorded acquisition and integration related expenses of $2.2 million (Note 7).

The_Company_and_Its_Significan2

The Company and Its Significant Accounting Policies (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 29, 2014	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
The Company and Its Significant Accounting Policies [Line Items]	'	'	'	'
Proceeds from Sale of Equity Method Investment	$2,600,000	$2,586,000	$0	$0
Equity Method Investment, Realized Gain (Loss) on Disposal	1,500,000	'	'	'
Equity Method Investments	1,700,000	1,700,000	2,100,000	'
Purchased raw materials from equity investee	'	6,600,000	7,000,000	9,200,000
Maturity Period For Available For Sale Investments Classification As Current Investments Minimum [greater than]	'	'3 months	'	'
Maturity Period For Available For Sale Investments Classification As Current Investments Maximum [less than]	'	'1 year	'	'
Maturity Period for Available for Sale Investments Classification As Long Term Investments Minimum [exceeding]	'	'1 year	'	'
Value Added Tax Receivable	10,100,000	10,100,000	13,900,000	'
Goodwill	103,901,000	103,901,000	104,846,000	95,628,000
Rebates As Percentage Of Sales [Less Than]	'	2.00%	2.00%	2.00%
Percentage Of Net Revenue Other Agreements [Less Than]	'	1.00%	1.00%	1.00%
Advertising Expense	'	100,000	400,000	300,000
Valuation Allowance, Methodologies and Assumptions	'	'A valuation allowance is provided against deferred tax assets to the extent the Company determines it is more likely than not (a likelihood of more than 50 percent) that some portion or all of its deferred tax assets will not be realized.	'	'
Valuation Allowance, percentage of likelihood that that some portion or all of its deferred tax assets will not be realized [More Than]	'	50.00%	'	'
Total remaining unearned compensation cost related to nonvested restricted stock units and options	22,800,000	22,800,000	'	'
Weighted-average remaining service period of unearned compensation costs related to nonvested restricted stock units and options	'	'1 year 2 months	'	'
Minimum [Member]	'	'	'	'
The Company and Its Significant Accounting Policies [Line Items]	'	'	'	'
Property, Plant and Equipment, Useful Life	'	'1 year	'	'
Maximum [Member]	'	'	'	'
The Company and Its Significant Accounting Policies [Line Items]	'	'	'	'
Property, Plant and Equipment, Useful Life	'	'20 years	'	'
Multi Market Products Group [Member]	'	'	'	'
The Company and Its Significant Accounting Policies [Line Items]	'	'	'	'
Goodwill	93,600,000	93,600,000	'	'
Cellular Products Group [Member]	'	'	'	'
The Company and Its Significant Accounting Policies [Line Items]	'	'	'	'
Goodwill	$10,300,000	$10,300,000	'	'
Technology licenses [Member] | Minimum [Member]	'	'	'	'
The Company and Its Significant Accounting Policies [Line Items]	'	'	'	'
Finite-Lived Intangible Asset, Useful Life	'	'6 years	'	'
Technology licenses [Member] | Maximum [Member]	'	'	'	'
The Company and Its Significant Accounting Policies [Line Items]	'	'	'	'
Finite-Lived Intangible Asset, Useful Life	'	'15 years	'	'
Customer Relationships [Member] | Minimum [Member]	'	'	'	'
The Company and Its Significant Accounting Policies [Line Items]	'	'	'	'
Finite-Lived Intangible Asset, Useful Life	'	'3 years	'	'
Customer Relationships [Member] | Maximum [Member]	'	'	'	'
The Company and Its Significant Accounting Policies [Line Items]	'	'	'	'
Finite-Lived Intangible Asset, Useful Life	'	'10 years	'	'
Developed Technology [Member]	'	'	'	'
The Company and Its Significant Accounting Policies [Line Items]	'	'	'	'
Finite-Lived Intangible Asset, Useful Life	'	'6 years	'	'
Wafer Supply Agreement [Member]	'	'	'	'
The Company and Its Significant Accounting Policies [Line Items]	'	'	'	'
Finite-Lived Intangible Asset, Useful Life	'	'4 years	'	'

Concentrations_of_Credit_Risk_1

Concentrations of Credit Risk (Details) (Sales Revenue, Net [Member], Customer Concentration Risk [Member])	12 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Samsung [Member]	'	'	'
Revenue from significant customers	'	'	'
Percentage	25.00%	22.00%	22.00%
Nokia [Member]	'	'	'
Revenue from significant customers	'	'	'
Percentage	'	'	14.00%

Concentrations_of_Credit_Risk_2

Concentrations of Credit Risk (Details Textual)	12 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Other End Customer [Member]	'	'	'
Concentrations of Credit Risk (Textual)	'	'	'
Percentage	20.00%	'	'
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Samsung [Member]	'	'	'
Concentrations of Credit Risk (Textual)	'	'	'
Percentage	25.00%	22.00%	22.00%
Accounts Receivable [Member] | Credit Concentration Risk [Member] | Samsung [Member]	'	'	'
Concentrations of Credit Risk (Textual)	'	'	'
Percentage	25.00%	29.00%	'
Accounts Receivable [Member] | Credit Concentration Risk [Member] | Nokia and Samsung [Member]	'	'	'
Concentrations of Credit Risk (Textual)	'	'	'
Percentage	'	'	28.00%

Investments_and_Fair_Value_Mea2

Investments and Fair Value Measurements (Details) (USD $)	Mar. 29, 2014	Mar. 30, 2013
In Thousands, unless otherwise specified
Available-for-Sale securities	'	'
Cost	$184,014	$106,466
Gross unrealized gains	1	3
Gross unrealized losses	0	-4
Estimated fair value	184,015	106,465
U.S. government/agency securities [Member]	'	'
Available-for-Sale securities	'	'
Cost	133,064	77,988
Gross unrealized gains	1	3
Gross unrealized losses	0	-4
Estimated fair value	133,065	77,987
Auction Rate Securities [Member]	'	'
Available-for-Sale securities	'	'
Cost	2,150	2,150
Estimated fair value	2,150	2,150
Money Market Funds [Member]	'	'
Available-for-Sale securities	'	'
Cost	48,800	26,328
Estimated fair value	$48,800	$26,328

Investments_and_Fair_Value_Mea3

Investments and Fair Value Measurements (Details 1) (USD $)	Mar. 29, 2014	Mar. 30, 2013
In Thousands, unless otherwise specified
Amortized cost of available-for-sale investments in debt securities with contractual maturities	'	'
Cost of investments in debt securities due in less than one year	$181,864	$104,316
Cost of investments in debt securities due after ten years	2,150	2,150
Total cost of investments in debt securities	184,014	106,466
Estimated fair value of investments in debt securities due in less than one year	181,865	104,315
Estimated fair value of investments in debt securities due after ten years	2,150	2,150
Estimated fair value	$184,015	$106,465

Investments_and_Fair_Value_Mea4

Investments and Fair Value Measurements (Details 2) (USD $)	Mar. 29, 2014	Mar. 30, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Fair value of financial assets measured at fair value on a recurring basis	$184,015	$106,465
Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Fair value of financial assets measured at fair value on a recurring basis	184,015	106,465
Recurring [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Fair value of financial assets measured at fair value on a recurring basis	181,865	104,315
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Fair value of financial assets measured at fair value on a recurring basis	2,150	2,150
U.S. government/agency securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Fair value of financial assets measured at fair value on a recurring basis	133,065	77,987
U.S. government/agency securities [Member] | Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Fair value of financial assets measured at fair value on a recurring basis	133,065	77,987
U.S. government/agency securities [Member] | Recurring [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Fair value of financial assets measured at fair value on a recurring basis	133,065	77,987
Auction Rate Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Fair value of financial assets measured at fair value on a recurring basis	2,150	2,150
Auction Rate Securities [Member] | Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Fair value of financial assets measured at fair value on a recurring basis	2,150	2,150
Auction Rate Securities [Member] | Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Fair value of financial assets measured at fair value on a recurring basis	2,150	2,150
Money Market Funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Fair value of financial assets measured at fair value on a recurring basis	48,800	26,328
Money Market Funds [Member] | Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Fair value of financial assets measured at fair value on a recurring basis	48,800	26,328
Money Market Funds [Member] | Recurring [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Fair value of financial assets measured at fair value on a recurring basis	$48,800	$26,328

Investments_and_Fair_Value_Mea5

Investments and Fair Value Measurements (Details Textual) (USD $)	3 Months Ended	12 Months Ended		3 Months Ended
In Millions, unless otherwise specified	Sep. 28, 2013	Mar. 29, 2014	Mar. 30, 2013	Jun. 29, 2013
			U.S. government/agency securities [Member]	Fair Value, Measurements, Nonrecurring [Member]
				Fair Value, Inputs, Level 3 [Member]
Schedule of Available-for-sale Securities [Line Items]	'	'	'	'
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses [less than]	'	$0	$0.10	'
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	'	'	14	'
Impairment of certain property and equipment	'	'	'	1.7
Fair value of certain property and equipment	'	'	'	0.8
Loss on the sale of certain property and equipment	$0.60	'	'	'

Inventories_Details

Inventories (Details) (USD $)	Mar. 29, 2014	Mar. 30, 2013
In Thousands, unless otherwise specified
Components of inventories	'	'
Raw materials	$32,927	$45,656
Work in process	51,544	64,108
Finished goods	41,232	51,429
Total inventories	$125,703	$161,193

Business_Acquisition_Details

Business Acquisition (Details) (USD $)	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012	Nov. 09, 2012
In Thousands, unless otherwise specified				Amalfi [Member]
Business Acquisition [Line Items]	'	'	'	'
Cash and cash equivalents	'	'	'	$37,575
Accounts receivable	'	'	'	4,809
Inventories	'	'	'	10,660
Prepaid expenses and other assets	'	'	'	933
Property and equipment	'	'	'	1,164
Intangible assets (Note 8)	'	'	'	31,900
Goodwill	103,901	104,846	95,628	10,254
Total assets	'	'	'	97,295
Accounts payable and accrued liabilities	'	'	'	-11,293
Total purchase price	'	'	'	$86,002

Business_Acquisition_Details_1

Business Acquisition (Details 1) (Amalfi [Member], USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 30, 2013	Mar. 31, 2012
Amalfi [Member]	'	'
Business Acquisition, Pro Forma Information [Line Items]	'	'
Revenue	$995,441	$891,262
Net loss	($62,114)	($20,607)
Basic net loss per common share	($0.22)	($0.07)
Diluted net loss per common share	($0.22)	($0.07)

Business_Acquisition_Details_T

Business Acquisition (Details Textual) (USD $)

3 Months Ended

12 Months Ended

3 Months Ended

5 Months Ended

12 Months Ended

Mar. 29, 2014

Dec. 28, 2013

Sep. 28, 2013

Jun. 29, 2013

Mar. 29, 2014

Mar. 30, 2013

Mar. 31, 2012

Mar. 30, 2013

Dec. 29, 2012

Mar. 30, 2013

Mar. 30, 2013

Nov. 09, 2012

Amalfi [Member]

Amalfi [Member]

Amalfi [Member]

Amalfi [Member]

Amalfi [Member]

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of the outstanding equity securities acquired

'

'

'

'

'

'

'

'

'

'

'

100.00%

Business Acquisition, Purchase Price Net Of Cash Received And Working Capital Adjustments

'

'

'

'

'

'

'

'

'

'

'

$48,400,000

Cash received in business combination

'

'

'

'

'

'

'

'

'

'

'

37,575,000

Goodwill

103,901,000

'

'

'

103,901,000

104,846,000

95,628,000

'

'

'

'

10,254,000

Revenue

'

'

'

'

'

'

'

11,100,000

5,400,000

16,500,000

'

'

Income (loss) from operations

'

'

'

'

27,341,000

-15,680,000

24,643,000

-3,600,000

-5,900,000

-9,500,000

'

'

Acquisition-related costs

'

2,900,000

'

'

'

'

'

'

'

'

1,500,000

'

Restructuring costs

$2,900,000

$3,000,000

$2,300,000

$2,900,000

$11,100,000

'

'

'

'

'

$1,300,000

'

Asset_Transfer_Transaction_Det

Asset Transfer Transaction (Details) (USD $)	3 Months Ended	12 Months Ended
	Jun. 30, 2012	Mar. 29, 2014	Mar. 30, 2013
	Employee
Asset Transfer Transaction [Abstract]	'	'	'
Property Plant And Equipment Net Written Off	$24,400,000	'	'
Goodwill Written off	1,000,000	1,008,000	973,000
Minimum purchase commitment related to wafer supply agreement	'	7,200,000	'
Number Of Employees Transferred	70	'	'
Loss On Asset Transfer	$5,000,000	'	'

Merger_Agreement_Details

Merger Agreement (Details) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Dec. 28, 2013	Mar. 29, 2014
		TriQuint Merger [Member]
Business Acquisition [Line Items]	'	'
Acquisition-related costs	$2.90	$3.20
Integration-related costs	'	$1.90

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2012	Mar. 29, 2014	Mar. 30, 2013
Goodwill [Roll Forward]	'	'	'
Goodwill, Beginning Balance	$95,628	$104,846	$95,628
Amalfi acquisition (Note 5)	'	'	10,191
Written off due to sale of the U.K. facility [FY14] Written off due to transfer of MBE operations during the period (Note 6) [FY13]	-1,000	-1,008	-973
Amalfi acquisition adjustments (Note 5)	'	63	'
Goodwill, Ending Balance	'	$103,901	$104,846

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets (Details 1) (USD $)	Mar. 29, 2014	Mar. 30, 2013
In Thousands, unless otherwise specified
Gross carrying amounts and amortization of intangibles	'	'
Gross Carrying Amount	$181,715	$191,355
Accumulated Amortization	126,725	98,158
Technology licenses [Member]	'	'
Gross carrying amounts and amortization of intangibles	'	'
Gross Carrying Amount	12,006	10,346
Accumulated Amortization	10,418	10,118
Customer relationships [Member]	'	'
Gross carrying amounts and amortization of intangibles	'	'
Gross Carrying Amount	47,103	47,103
Accumulated Amortization	26,391	21,644
Developed Technology [Member]	'	'
Gross carrying amounts and amortization of intangibles	'	'
Gross Carrying Amount	102,163	102,163
Accumulated Amortization	78,540	61,907
Wafer supply agreement [Member]	'	'
Gross carrying amounts and amortization of intangibles	'	'
Gross Carrying Amount	20,443	20,443
Accumulated Amortization	11,376	4,489
In-process research and development [Member]	'	'
Gross carrying amounts and amortization of intangibles	'	'
Gross Carrying Amount	$0	$11,300

Goodwill_and_Intangible_Assets4

Goodwill and Intangible Assets (Details 2) (Amalfi [Member], USD $)	Nov. 09, 2012
In Thousands, unless otherwise specified
Acquired Finite-Lived And Indefinite-lived Intangible Assets [Line Items]	'
Intangible assets	$31,900
Developed Technology [Member]	'
Acquired Finite-Lived And Indefinite-lived Intangible Assets [Line Items]	'
Intangible assets	19,200
Customer Relationships [Member]	'
Acquired Finite-Lived And Indefinite-lived Intangible Assets [Line Items]	'
Intangible assets	1,400
In-process research and development [Member]	'
Acquired Finite-Lived And Indefinite-lived Intangible Assets [Line Items]	'
Intangible assets	$11,300

Goodwill_and_Intangible_Assets5

Goodwill and Intangible Assets (Details 3) (USD $)	Mar. 29, 2014
In Thousands, unless otherwise specified
Estimated Amortization Expense	'
2015	$22,533
2016	11,964
2017	8,367
2018	7,664
2019	$4,904

Goodwill_and_Intangible_Assets6

Goodwill and Intangible Assets (Details Textual) (USD $)	3 Months Ended	12 Months Ended								3 Months Ended
	Jun. 30, 2012	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012	Mar. 29, 2014	Nov. 09, 2012	Nov. 09, 2012	Mar. 29, 2014	Mar. 29, 2014	Mar. 29, 2014
					Sirenza [Member]	Amalfi [Member]	Amalfi [Member]	Multi Market Products Group [Member]	Cellular Products Group [Member]	Operating Expense Reductions [Member]
							In-process research and development [Member]			In-process research and development [Member]
Goodwill and Intangible Assets [Line Items]	'	'	'	'	'	'	'	'	'	'
Goodwill	'	$103,901,000	$104,846,000	$95,628,000	'	$10,254,000	'	$93,600,000	$10,300,000	'
Goodwill, Gross	'	725,500,000	'	'	'	'	'	'	'	'
Goodwill, Impaired, Accumulated Impairment Loss	'	619,600,000	'	'	'	'	'	'	'	'
Goodwill, Written off Related to Sale of Business Unit	1,000,000	1,008,000	973,000	'	'	'	'	'	'	'
Business Acquisition, Purchase Price Allocation, Goodwill, Expected Tax Deductible Amount	'	'	'	'	1,700,000	'	'	'	'	'
Intangible assets	'	'	'	'	'	31,900,000	11,300,000	'	'	'
Impairment of Intangible Asset	'	'	'	'	'	'	'	'	'	11,300,000
Intangible amortization	'	$28,638,000	$23,107,000	$18,390,000	'	'	'	'	'	'

Debt_Details

Debt (Details) (USD $)	Mar. 29, 2014	Mar. 30, 2013
In Thousands, unless otherwise specified
Debt balances	'	'
Net carrying amount of debt	$87,263	$82,035
Less current portion	87,263	0
Total long-term debt	0	82,035
Convertible Notes Due 2014 [Member]	'	'
Debt balances	'	'
Net carrying amount of debt	$87,263	$82,035

Debt_Details_1

Debt (Details 1) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Details of convertible debt	'	'	'
Net carrying amount of debt	$87,263	$82,035	'
Convertible Notes Due 2012 [Member]	'	'	'
Details of convertible debt	'	'	'
Carrying amount of the equity component (common stock)	19,954	19,954	'
Effective interest rate on liability component	'	7.30%	7.30%
Cash interest expense recognized	'	11	285
Non-cash interest expense recognized (discount amortization)	'	69	2,372
Convertible Notes Due 2014 [Member]	'	'	'
Details of convertible debt	'	'	'
Carrying amount of the equity component (common stock)	33,241	33,241	'
Principal amount of the convertible subordinated notes	87,503	87,503	'
Unamortized discount of the liability component	-240	-5,468	'
Net carrying amount of debt	87,263	82,035	'
Effective interest rate on liability component	7.20%	7.20%	7.20%
Cash interest expense recognized	873	1,023	1,342
Non-cash interest expense recognized (discount amortization)	$5,228	$5,688	$6,958

Debt_Details_Textual

Debt (Details Textual) (USD $)

12 Months Ended

3 Months Ended

12 Months Ended

12 Months Ended

1 Months Ended

3 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

0 Months Ended

Mar. 29, 2014

Mar. 30, 2013

Mar. 31, 2012

Jun. 30, 2012

Mar. 31, 2012

Apr. 30, 2007

Mar. 29, 2014

Mar. 30, 2013

Apr. 30, 2007

Mar. 29, 2014

Mar. 30, 2013

Apr. 29, 2007

Jun. 30, 2012

Mar. 31, 2012

Mar. 31, 2007

Mar. 30, 2013

Mar. 29, 2014

Mar. 30, 2013

Mar. 30, 2013

Mar. 30, 2013

Mar. 30, 2013

Mar. 30, 2013

Mar. 30, 2013

Mar. 30, 2013

Apr. 15, 2014

Convertible Notes Due 2012 [Member]

Convertible Notes Due 2012 [Member]

Convertible Notes Due 2012 [Member]

Convertible Notes Due 2014 [Member]

Convertible Notes Due 2014 [Member]

Convertible Notes Due 2014 [Member]

Convertible Notes Due 2014 [Member]

Convertible Notes Due 2014 [Member]

Convertible Notes 2012 and 2014 [Member]

Loan Payable to Bank [Member]

Asset-Based Financing Equipment Term Loan [Member]

Asset-Based Financing Equipment Term Loan [Member]

Bank of America Syndicate [Member]

Bank of America Syndicate [Member]

Bank of America Syndicate [Member]

Bank of America Syndicate [Member]

Bank of America Syndicate [Member]

Bank of America Syndicate [Member]

Bank of America Syndicate [Member]

Bank of America Syndicate [Member]

Bank of America Syndicate [Member]

Subsequent Event [Member]

Private Offerings, Resale and Trading through Automated Linkages [Member]

Private Offerings, Resale and Trading through Automated Linkages [Member]

Credit Agreement [Member]

Credit Agreement [Member]

Revolving Credit Facility [Member]

Swingline Loan [Member]

Standby Letters of Credit [Member]

Federal funds rate [Member]

Eurodollar [Member]

Base Rate [Member]

Default rate [Member]

Convertible Notes Due 2014 [Member]

Credit Agreement [Member]

Credit Agreement [Member]

Credit Agreement [Member]

Credit Agreement [Member]

Credit Agreement [Member]

Credit Agreement [Member]

Credit Agreement [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Face Amount

'

'

'

'

'

$200,000,000

'

'

$175,000,000

'

'

'

'

'

$25,000,000

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Interest Rate, Stated Percentage

'

'

'

'

'

0.75%

'

'

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments of Debt Issuance Costs

122,000

1,240,000

0

'

'

'

'

'

'

'

'

8,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Repayments of Convertible Debt

'

'

'

26,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

87,500,000

Conversion rate (shares of common stock per $1,000 principal amount of note)

'

'

'

'

'

'

124.2969

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Convertible, Stock Price Trigger

'

'

'

'

'

'

$8.05

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest paid

1,205,000

1,409,000

2,315,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

400,000

Extinguishment of Debt, Principal Amount

'

'

'

'

35,800,000

'

'

47,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument Purchase Price Per Share

'

'

'

'

$103.27

'

'

$98.34

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loss on retirement of convertible subordinated notes

0

2,756,000

908,000

'

900,000

'

'

2,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term Debt, Fair Value

'

'

'

'

'

'

'

'

'

88,700,000

86,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net carrying amount of debt

87,263,000

82,035,000

'

'

'

'

87,263,000

82,035,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Maximum Borrowing Capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

125,000,000

5,000,000

5,000,000

'

'

'

'

'

Line of Credit Facility, Maximum amount of increase that may be requested

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50,000,000

'

'

'

'

'

'

'

Line of Credit Facility, Amount Outstanding

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

'

'

'

'

'

'

'

Percent of equity of foreign subsidiaries pledged as security interest

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

65.00%

'

'

'

'

'

'

'

'

'

Debt Instrument, Basis Spread on Variable Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.50%

1.00%

'

2.00%

'

Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.25%

1.25%

'

'

Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.75%

1.75%

'

'

Line of Credit Facility, Maximum Consolidated Leverage Ratio Allowed

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.5

'

'

'

'

'

'

'

'

Line of Credit Facility, Minimum Consolidated Leverage Ratio Required

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

Line of Credit Facility, Maximum Consolidated Liquidity Ratio Required

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.05

'

'

'

'

'

'

'

'

Line of Credit Facility, Minimum Consolidated Liquidity Ratio Required

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

Line of Credit Facility, Consolidated EBITDA requirement [Not Less Than]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

75,000,000

'

'

'

'

'

'

'

'

Repayment of long term debt

$0

$79,432,000

$41,853,000

'

'

'

'

'

'

'

'

'

$6,300,000

$3,900,000

'

'

'

'

'

'

'

'

'

'

'

Retirement_Benefit_Plans_Detai

Retirement Benefit Plans (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
U. S. Defined Contribution Plan [Member]	'	'	'
Retirement Benefit Plan (Textual)	'	'	'
Service period	'2 years	'	'
Defined Contribution Plan, Company Contribution Amount	$4.70	$4.30	$4
Germany Defined Pension Plan [Member]	'	'	'
Retirement Benefit Plan (Textual)	'	'	'
Defined Benefit Pension Plan, Benefit Obligation	5.5	4.4	'
Defined Benefit Pension Plan, Net Periodic Benefit Cost	0.3	0.3	0.3
European Defined Contribution Plans [Member]	'	'	'
Retirement Benefit Plan (Textual)	'	'	'
Service period	'3 months	'	'
Defined Contribution Plan, Company Contribution Amount	0.7	1	1
Asian Defined Contribution Plans [Member]	'	'	'
Retirement Benefit Plan (Textual)	'	'	'
Defined Contribution Plan, Company Contribution Amount	$0.10	$0.10	$0.10

Commitments_and_Contingent_Lia2

Commitments and Contingent Liabilities (Details) (USD $)	Mar. 29, 2014
In Thousands, unless otherwise specified
Schedule of Capital and Opearting Lease Future Minimum Lease Payments [Line Items]	'
2015, Capital Leases	$73
2016, Capital Leases	18
2017, Capital Leases	0
2018, Capital Leases	0
2019, Capital Leases	0
Thereafter, Capital Leases	0
Total minimum payment, Capital Leases	91
Less amounts representing interest	4
Present value of minimum lease payments	87
Less current portion	69
Obligations under capital leases, less current portion	18
2015, Operating Leases	8,899
2016, Operating Leases	7,761
2017, Operating Leases	6,926
2018, Operating Leases	5,292
2019, Operating Leases	4,118
Thereafter, Operating Leases	15,847
Total minimum payment, Operating Leases	$48,843

Commitments_and_Contingent_Lia3

Commitments and Contingent Liabilities (Details Textual) (USD $)	12 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Commitments and Contingent Liabilities (Textual)	'	'	'
Interest rate on capital leases, minimum	6.00%	'	'
Interest rate on capital leases, maximum	6.40%	'	'
Equipment under capital lease arrangements	$300,000	$300,000	'
Total future minimum lease payments	48,843,000	'	'
Rent expense under operating leases	10,700,000	10,100,000	7,400,000
Facility [Member]	'	'	'
Commitments and Contingent Liabilities (Textual)	'	'	'
Number of renewal periods for operating leases	2	'	'
Operating lease renewal period	'10 years	'	'
Total future minimum lease payments	48,700,000	'	'
Facility [Member] | Minimum [Member]	'	'	'
Commitments and Contingent Liabilities (Textual)	'	'	'
Lessee Leasing Arrangements, Operating Leases, Term of Contract	'1 year	'	'
Facility [Member] | Maximum [Member]	'	'	'
Commitments and Contingent Liabilities (Textual)	'	'	'
Lessee Leasing Arrangements, Operating Leases, Term of Contract	'14 years	'	'
Equipment [Member]	'	'	'
Commitments and Contingent Liabilities (Textual)	'	'	'
Total future minimum lease payments	$200,000	'	'
Equipment [Member] | Minimum [Member]	'	'	'
Commitments and Contingent Liabilities (Textual)	'	'	'
Lessee Leasing Arrangements, Operating Leases, Term of Contract	'1 year	'	'
Equipment [Member] | Maximum [Member]	'	'	'
Commitments and Contingent Liabilities (Textual)	'	'	'
Lessee Leasing Arrangements, Operating Leases, Term of Contract	'3 years	'	'

Restructuring_Details

Restructuring (Details) (USD $)

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

Mar. 29, 2014

Dec. 28, 2013

Sep. 28, 2013

Jun. 29, 2013

Mar. 29, 2014

Mar. 29, 2014

Mar. 29, 2014

Mar. 29, 2014

Mar. 29, 2014

Mar. 30, 2013

Mar. 29, 2014

Mar. 30, 2013

Mar. 31, 2012

Manufacturing efficiencies [Member]

Operating Expense Reductions [Member]

Operating Expense Reductions [Member]

Newton Aycliffe UK facility [Member]

Newton Aycliffe UK facility [Member]

Economic Restructuring [Member]

Economic Restructuring [Member]

Economic Restructuring [Member]

In-process research and development [Member]

Restructuring Cost and Reserve [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Restructuring costs

$2,900,000

$3,000,000

$2,300,000

$2,900,000

$11,100,000

$4,100,000

$2,500,000

'

$4,400,000

$800,000

$100,000

$200,000

($1,400,000)

Current and long-term restructuring obligations

'

'

'

'

'

'

1,100,000

'

'

800,000

3,900,000

4,600,000

'

Impairment of Intangible Asset

'

'

'

'

'

'

'

11,300,000

'

'

'

'

'

Change in restructuring obligation

'

'

'

'

'

'

'

'

'

'

'

'

1,700,000

Restructuring and Related Cost, Expected Cost

'

'

'

'

'

'

'

'

'

'

$900,000

'

'

Income_Taxes_Details

Income Taxes (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Income (loss) before income taxes	'	'	'
United States	($7,120)	($72,895)	($45,031)
Foreign	30,993	46,996	60,659
Income (loss) before income taxes	$23,873	($25,899)	$15,628

Income_Taxes_Details_1

Income Taxes (Details 1) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Current (expense) benefit:	'	'	'
Federal	($875)	($515)	$1,106
State	24	73	73
Foreign	-9,939	-9,862	-11,667
Total current (expense) benefit	-10,790	-10,304	-10,488
Deferred (expense) benefit:	'	'	'
Federal	488	-214	-580
State	59	-13	-35
Foreign	-988	-16,569	-3,668
Total deferred (expense) benefit	-441	-16,796	-4,283
Total	($11,231)	($27,100)	($14,771)

Income_Taxes_Details_2

Income Taxes (Details 2) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
ReconciliationOfProvisionOfIncomeTaxes [Line Items]	'	'	'
Income tax expense at statutory federal rate	($8,355)	$9,065	($5,470)
Income tax expense at statutory federal rate, Percentage	35.00%	35.00%	35.00%
Decrease (increase) resulting from:	'	'	'
State benefit (provision), net of federal (provision) benefit	75	-827	849
State benefit (provision), net of federal (provision) benefit, Percentage	-0.31%	-3.19%	-5.43%
Research and development credits	3,177	6,257	3,422
Research and development credits, Percentage	-13.31%	24.16%	-21.90%
Foreign tax credits	574	2,434	1,998
Foreign tax credits, Percent	-2.41%	9.39%	-12.78%
Effect of changes in income tax rate applied to net deferred tax assets	-65	-1,250	-1,568
Effect of changes in income tax rate applied to net deferred tax assets, Percentage	0.27%	-4.83%	10.04%
Foreign tax rate difference	636	3,218	7,486
Foreign tax rate difference, Percentage	-2.66%	12.43%	-47.90%
Change in valuation allowance	5,890	-40,675	-20,408
Change in valuation allowance, Percentage	-24.67%	-157.05%	130.58%
Repurchase of convertible subordinated notes	0	438	622
Repurchase Of Convertible Subordinated Notes, Percentage	0.00%	1.69%	-3.98%
Adjustments to net deferred tax assets	2,939	-872	597
Adjustments To Net Deferred Tax Assets, Percentage	-12.31%	-3.37%	-3.82%
Share-based compensation	-635	-2,108	-66
Share-based compensation, Percentage	2.66%	-8.14%	0.42%
Tax reserve adjustments	-1,482	-515	2,084
Tax reserve adjustments, Percentage	6.21%	-1.99%	-13.33%
Deemed dividend	-1,122	-1,749	-3,971
Deemed Dividend, Percentage	4.70%	-6.75%	25.41%
Write-off U.K. gross deferred tax assets	-12,699	0	0
Write-off U.K. gross deferred tax assets, Percent	53.19%	0.00%	0.00%
Other income tax benefit (expense)	-164	-516	-346
Other income tax benefit (expense), Percentage	0.69%	-1.99%	2.21%
Total	($11,231)	($27,100)	($14,771)
Total, Percentage	47.05%	-104.64%	94.52%

Income_Taxes_Details_3

Income Taxes (Details 3) (USD $)	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012	Apr. 02, 2011
In Thousands, unless otherwise specified
Deferred income tax assets:	'	'	'	'
Inventory reserve	$9,813	$8,107	'	'
Basis in stock and other investments	2,748	5,547	'	'
Equity compensation	17,860	18,574	'	'
Accumulated depreciation/basis difference	29,260	42,541	'	'
Net operating loss carry-forwards	37,676	57,632	'	'
Research and other credits	71,406	66,796	'	'
Other deferred assets	9,189	10,643	'	'
Total deferred income tax assets	177,952	209,840	'	'
Valuation allowance	-143,264	-164,244	-112,700	-92,300
Total deferred income tax assets, net of valuation allowance	34,688	45,596	'	'
Deferred income tax liabilities:	'	'	'	'
Amortization and purchase accounting basis difference	-10,862	-18,183	'	'
Convertible debt discount	-83	-1,918	'	'
Deferred gain	-4,994	-6,320	'	'
Other deferred liabilities	-501	-744	'	'
Total deferred income tax liabilities	-16,440	-27,165	'	'
Net deferred income tax assets	18,248	18,431	'	'
Amounts included in consolidated balance sheets:	'	'	'	'
Current assets	4,419	2,760	'	'
Current liabilities	-200	-329	'	'
Non-current assets	14,913	17,221	'	'
Non-current liabilities	-884	-1,221	'	'
Net deferred income tax assets	$18,248	$18,431	'	'

Income_Taxes_Details_4

Income Taxes (Details 4) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Reconciliation of gross unrecognized tax benefits	'	'	'
Beginning balance	$37,917	$31,727	$32,941
Additions based on positions related to current year	2,181	2,209	1,067
Additions for tax positions in prior years	229	4,780	450
Reductions for tax positions in prior years	-904	-482	-2,699
Expiration of Statute of Limitations	0	-317	-32
Settlements	0	0	0
Ending Balance	$39,423	$37,917	$31,727

Income_Taxes_Details_Textual

Income Taxes (Details Textual) (USD $)	12 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012	Apr. 02, 2011
Income Taxes (Textual)	'	'	'	'
Deferred Tax Assets, Valuation Allowance	$143,264,000	$164,244,000	$112,700,000	$92,300,000
Valuation Allowance, Deferred Tax Asset, Change in Amount	-20,900,000	51,500,000	20,400,000	'
Undistributed earnings of foreign subsidiaries	226,300,000	'	'	'
Foreign jurisdiction exemption reduction, Dollar Amount	0	100,000	100,000	'
Foreign jurisdiction exemption reduction, Per Share	'	$0.00	$0.00	'
Gross unrecognized tax benefits	39,423,000	37,917,000	31,727,000	32,941,000
Unrecognized tax benefits, if recognized, would impact the effective tax rate	30,900,000	29,700,000	24,400,000	'
Additions for tax positions in prior years	229,000	4,780,000	450,000	'
Interest and penalties expense (benefit) recognized related to uncertain tax positions	900,000	700,000	600,000	'
Accrued interest and penalties related to unrecognized tax benefits	2,300,000	1,300,000	600,000	'
Period gross unrecognized tax benefits may be reduced	'12 months	'	'	'
Range of gross unrecognized tax benefits may be reduced, upper bound	500,000	'	'	'
Domestic deferred tax assets [Member]	'	'	'	'
Income Taxes (Textual)	'	'	'	'
Deferred Tax Assets, Valuation Allowance	143,300,000	'	'	90,500,000
Valuation Allowance, Deferred Tax Asset, Change in Amount	'	28,700,000	22,200,000	'
Shanghai China deferred tax asset [Member]	'	'	'	'
Income Taxes (Textual)	'	'	'	'
Deferred Tax Assets, Valuation Allowance	'	'	'	1,800,000
Valuation Allowance, Deferred Tax Asset, Change in Amount	'	'	-1,800,000	'
U.K. deferred tax asset [Member]	'	'	'	'
Income Taxes (Textual)	'	'	'	'
Valuation Allowance, Deferred Tax Asset, Change in Amount	-12,000,000	12,000,000	'	'
Intercompany Profits deferred tax asset [Member]	'	'	'	'
Income Taxes (Textual)	'	'	'	'
Valuation Allowance, Deferred Tax Asset, Change in Amount	-15,100,000	'	'	'
Amalfi acquisition deferred tax asset [Member]	'	'	'	'
Income Taxes (Textual)	'	'	'	'
Valuation Allowance, Deferred Tax Asset, Change in Amount	3,400,000	10,800,000	'	'
Other deferred tax asset [Member]	'	'	'	'
Income Taxes (Textual)	'	'	'	'
Valuation Allowance, Deferred Tax Asset, Change in Amount	2,800,000	'	'	'
U.S. Federal [Member]	'	'	'	'
Income Taxes (Textual)	'	'	'	'
Loss carryovers	118,900,000	'	'	'
State [Member]	'	'	'	'
Income Taxes (Textual)	'	'	'	'
Loss carryovers	109,600,000	'	'	'
Income tax credits	22,500,000	'	'	'
Research Tax Credit Carryforward [Member] | U.S. Federal [Member]	'	'	'	'
Income Taxes (Textual)	'	'	'	'
Income tax credits	64,400,000	'	'	'
Foreign [Member] | U.S. Federal [Member]	'	'	'	'
Income Taxes (Textual)	'	'	'	'
Income tax credits	6,200,000	'	'	'
Alternative mininmum tax [Member] | U.S. Federal [Member]	'	'	'	'
Income Taxes (Textual)	'	'	'	'
Income tax credits	1,500,000	'	'	'
Amalfi [Member]	'	'	'	'
Income Taxes (Textual)	'	'	'	'
Additions for tax positions in prior years	'	$4,400,000	'	'

Net_Income_Loss_Per_Share_Deta

Net Income (Loss) Per Share (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 29, 2014	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Numerator:	'	'	'	'	'	'	'	'	'	'	'
Numerator for basic and diluted net income (loss) per share — net income (loss) available to common shareholders	($1,046)	$6,235	$5,892	$1,561	($15,961)	($1,443)	($16,456)	($19,139)	$12,642	($52,999)	$857
Denominator:	'	'	'	'	'	'	'	'	'	'	'
Denominator for basic net income (loss) per share — weighted average shares	'	'	'	'	'	'	'	'	281,996	278,602	276,289
Effect of dilutive securities:	'	'	'	'	'	'	'	'	'	'	'
Share-based awards	'	'	'	'	'	'	'	'	6,078	0	6,287
Denominator for diluted net income (loss) per share — adjusted weighted average shares and assumed conversions	'	'	'	'	'	'	'	'	288,074	278,602	282,576
Basic net income (loss) per share	$0	$0.02	$0.02	$0.01	($0.06)	($0.01)	($0.06)	($0.07)	$0.04	($0.19)	$0
Diluted net income (loss) per share	$0	$0.02	$0.02	$0.01	($0.06)	($0.01)	($0.06)	($0.07)	$0.04	($0.19)	$0

Net_Income_Loss_Per_Share_Deta1

Net Income (Loss) Per Share (Details Textual) (USD $)	12 Months Ended		3 Months Ended		12 Months Ended		0 Months Ended
Share data in Millions, except Per Share data, unless otherwise specified	Mar. 29, 2014	Mar. 31, 2012	Jun. 30, 2012	Apr. 30, 2007	Mar. 29, 2014	Apr. 30, 2007	Apr. 15, 2014
			Convertible Notes Due 2012 [Member]	Convertible Notes Due 2012 [Member]	Convertible Notes Due 2014 [Member]	Convertible Notes Due 2014 [Member]	Subsequent Event [Member]
							Convertible Notes Due 2014 [Member]
Net (Loss) Income Per Share (Textual)	'	'	'	'	'	'	'
Shares excluded from the computation of diluted shares outstanding	7.2	6.3	'	'	'	'	'
Aggregate principal amount of Notes issued	'	'	'	$200,000,000	'	$175,000,000	'
Approximate average market price per share of the Company's common stock to be exceeded to make Notes dilutive to earnings	'	'	'	'	$8.05	'	'
Repayments of Convertible Debt	'	'	$26,500,000	'	'	'	$87,500,000

ShareBased_Compensation_Detail

Share-Based Compensation (Details) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 29, 2014
Summary of activity of the Company's director and employee stock option plans	'
Outstanding beginning balance, Shares	10,634
Outstanding beginning balance, Weighted-Average Exercise Price	$5.92
Granted, Shares	358
Granted, Weighted-Average Exercise Price	$5.03
Exercised, Shares	-2,267
Exercised, Weighted-Average Exercise Price	$5.48
Canceled, Shares	-1,701
Canceled, Weighted-Average Exercise Price	$6.94
Forfeited, Shares	-11
Forfeited, Weighted-Average Exercise Price	$5.92
Outstanding ending balance, Shares	7,013
Outstanding ending balance, Weighted-Average Exercise Price	$5.77
Outstanding, Weighted-Average Remaining Contractual Term	'3 years 1 month 10 days
Outstanding, Intrinsic Value	$13,558
Vested and expected to vest, Shares	7,003
Vested and expected to vest, Weighted-Average Exercise Price	$5.77
Vested and expected to vest, Weighted-Average Remaining Contractual Term	'3 years 1 month 5 days
Vested and expected to vest, Aggregate Intrinsic Value	13,527
Options exercisable, Shares	6,476
Options exercisable, Weighted-Average Exercise Price Ending Balance	$5.83
Options exercisable, Weighted-Average Remaining Contractual Term Ending Balance	'2 years 8 months 5 days
Options exercisable, Aggregate Intrinsic Value	$12,102

ShareBased_Compensation_Detail1

Share-Based Compensation (Details 1) (USD $)	12 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Assumptions used for stock option plans	'	'	'
Expected volatility	43.20%	51.60%	57.20%
Expected dividend yield	0.00%	0.00%	0.00%
Expected term (in years)	'5 years 6 months	'5 years 6 months	'5 years 5 months
Risk-free interest rate	1.40%	0.80%	1.40%
Weighted-average grant-date fair value of options granted during the period	$2.08	$1.80	$3.19

ShareBased_Compensation_Detail2

Share-Based Compensation (Details 2) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 29, 2014
Restricted share plans	'
Balance at ending balance, Shares	9,190
Restricted Stock [Member]	'
Restricted share plans	'
Balance at beginning balance, Shares	10,547
Balance at beginning balance, Weighted-Average Grant-Date Fair Value	$4.63
Granted, Shares	5,328
Granted, Weighted-Average Grant-Date Fair Value	$4.59
Vested, Shares	-5,713
Vested, Weighted-Average Grant-Date Fair Value	$4.76
Forfeited, Shares	-972
Forfeited, Weighted-Average Grant-Date Fair Value	$4.53
Balance at ending balance, Shares	9,190
Balance at ending balance, Weighted-Average Grant-Date Fair Value	$4.53

ShareBased_Compensation_Detail3

Share-Based Compensation (Details Textual) (USD $)

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

Mar. 29, 2014

Mar. 30, 2013

Mar. 31, 2012

Mar. 29, 2014

Mar. 29, 2014

Mar. 29, 2014

Mar. 31, 2012

Mar. 29, 2014

Apr. 01, 2006

Mar. 29, 2014

Mar. 29, 2014

Mar. 30, 2013

Mar. 29, 2014

Mar. 29, 2014

Mar. 29, 2014

Mar. 30, 2013

Mar. 31, 2012

Mar. 29, 2014

Mar. 30, 2013

Mar. 31, 2012

Mar. 29, 2014

Mar. 29, 2014

Mar. 30, 2013

Mar. 31, 2012

Mar. 29, 2014

Mar. 31, 2012

Mar. 29, 2014

Mar. 30, 2013

Mar. 29, 2014

Mar. 30, 2013

Mar. 31, 2012

Mar. 29, 2014

Mar. 30, 2013

Mar. 31, 2012

Mar. 29, 2014

Mar. 30, 2013

Mar. 31, 2012

Mar. 29, 2014

Mar. 30, 2013

Mar. 31, 2012

1999 Stock Incentive Plan [Member]

Certain officers of the Company (Section 16 Officers) [Member]

Employee Stock Purchase Plan [Member]

2006 Directors' Stock Option Plan [Member]

2006 Directors' Stock Option Plan [Member]

2006 Directors' Stock Option Plan [Member]

2003 Plan [Member]

2012 Stock Incentive Plan [Member]

2012 Stock Incentive Plan [Member]

Directors' Option Plan [Member]

Sirenza Microdevices 1998 Stock Plan [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Initial Options [Member]

Initial Options [Member]

Initial Options [Member]

Performance and service-based restricted stock units [Member]

Performance and service-based restricted stock units [Member]

Performance and service-based restricted stock units [Member]

Performance period 1 [Member]

Performance period 1 [Member]

Performance period 1 [Member]

Performance period 2 [Member]

Performance period 2 [Member]

Performance period 2 [Member]

Performance period 3 [Member]

Performance period 3 [Member]

Performance period 3 [Member]

1999 Stock Incentive Plan [Member]

2003 Plan [Member]

2003 Plan [Member]

2012 Stock Incentive Plan [Member]

1999 Stock Incentive Plan [Member]

2006 Directors' Stock Option Plan [Member]

2012 Stock Incentive Plan [Member]

2012 Stock Incentive Plan [Member]

Restricted stock units based on shareholder return [Member]

Restricted stock units based on shareholder return [Member]

Restricted stock units based on shareholder return [Member]

Restricted stock units based on shareholder return [Member]

Restricted stock units based on shareholder return [Member]

Restricted stock units based on shareholder return [Member]

Restricted stock units based on shareholder return [Member]

Restricted stock units based on shareholder return [Member]

Restricted stock units based on shareholder return [Member]

Share-Based Compensation (Textual)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock reserved for future issuance

'

'

'

'

'

'

'

1,400,000

'

'

'

'

1,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares available for grant or issuance

20,266,000

'

'

0

'

3,800,000

'

0

'

0

20,300,000

'

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum number of shares of common stock to be issued under plan

'

'

'

'

'

'

'

'

'

30,300,000

17,000,000

'

'

'

'

'

'

2,000,000

'

'

'

'

'

'

16,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares granted

358,000

'

'

'

2,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

2,000,000

1,400,000

1,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reserved additional shares of common stock

'

'

'

'

'

'

'

'

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Percent of Market Price

'

'

'

'

'

85.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Period employees can acquire common stock

'

'

'

'

'

'6 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares issued under plan

'

'

'

'

'

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Vesting period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'4 years

'4 years

'4 years

'

'

'

'

'4 years

'4 years

'4 years

'

'2 years

'2 years

'2 years

'2 years

'2 years

'2 years

'1 year

'1 year

'1 year

'2 years

'2 years

'2 years

'3 years

'3 years

'3 years

Expiration period

'

'

'

'

'

'

'10 years

'

'

'

'10 years

'10 years

'

'

'

'

'

'

'

'

'

'10 years

'10 years

'10 years

'

'10 years

'10 years

'10 years

'

'

'

'

'

'

'

'

'

'

'

'

Percentage vested when earned

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

50.00%

50.00%

'

'

'

'

'

'

'

'

'

Share-based compensation expense

$29,901,000

$30,819,000

$26,174,000

'

$11,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Closing stock price

$7.70

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total intrinsic value of options exercised

3,100,000

500,000

2,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash received from the exercise of stock options (excluding accrued employee refunds)

17,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Forfeiture rate

1.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total remaining unearned compensation cost related to nonvested restricted stock unit

22,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

22,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted-average remaining service period of unearned compensation costs related to nonvested restricted stock units

'1 year 2 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'1 year 2 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total fair value of restricted stock units

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$30,000,000

$21,000,000

$35,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shareholders_Equity_Details

Shareholders' Equity (Details)	Mar. 29, 2014	Mar. 30, 2013
In Thousands, unless otherwise specified
Common stock reserved for future issuance	'	'
Outstanding stock options under formal directors’ and employees’ stock option plans	7,013	10,634
Possible future issuance under Company stock option plans	20,266	'
Employee stock purchase plan	3,812	'
Restricted share-based units granted	9,190	'
Possible future issuance pursuant to convertible subordinated notes	8,444	'
Total shares reserved	48,725	'

Shareholders_Equity_Details_Te

Shareholders' Equity (Details Textual) (USD $)	3 Months Ended		12 Months Ended			38 Months Ended	0 Months Ended
Share data in Thousands, except Per Share data, unless otherwise specified	Mar. 30, 2013	Apr. 02, 2011	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012	Mar. 29, 2014	Apr. 15, 2014
							Subsequent Event [Member]
							Convertible Notes Due Two Thousand Fourteen [Member]
Shareholders' Equity (Textual)	'	'	'	'	'	'	'
Shares repurchased, authorized amount	$200,000,000	$200,000,000	'	'	'	'	'
Stock Repurchased During Period, Shares	'	'	2,500	1,900	4,900	11,000	'
Shares Acquired Average Cost Per Share	'	'	$5.03	$3.75	$6.18	$5.70	'
Share repurchase cost	'	'	'	'	'	62,600,000	'
Stock Repurchase Program, Remaining Authorized Repurchase Amount	'	'	137,400,000	'	'	'	'
Common stock reserved for future issuance	'	'	48,725	'	'	48,725	'
Common stock, shares authorized	500,000	'	500,000	500,000	'	500,000	'
Repayments of Convertible Debt	'	'	'	'	'	'	$87,500,000

Operating_Segment_and_Geograph2

Operating Segment and Geographical Information (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2014	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Revenue:	'	'	'	'	'	'	'	'	'	'	'
Revenue	$255,999	$288,520	$310,716	$292,996	$280,603	$271,213	$209,671	$202,660	$1,148,231	$964,147	$871,352
Income (loss) from operations:	'	'	'	'	'	'	'	'	'	'	'
Income (loss) from operations	'	'	'	'	'	'	'	'	27,341	-15,680	24,643
Interest expense	'	'	'	'	'	'	'	'	-5,983	-6,532	-10,997
Interest income	'	'	'	'	'	'	'	'	179	249	468
Loss on retirement of convertible subordinated notes	'	'	'	'	'	'	'	'	0	-2,756	-908
Other income (expense)	'	'	'	'	'	'	'	'	2,336	-1,180	2,422
Income (loss) before income taxes	'	'	'	'	'	'	'	'	23,873	-25,899	15,628
Operating Segments [Member] | CPG [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenue:	'	'	'	'	'	'	'	'	'	'	'
Revenue	'	'	'	'	'	'	'	'	935,313	761,425	664,242
Income (loss) from operations:	'	'	'	'	'	'	'	'	'	'	'
Income (loss) from operations	'	'	'	'	'	'	'	'	109,862	52,574	61,776
Operating Segments [Member] | MPG [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenue:	'	'	'	'	'	'	'	'	'	'	'
Revenue	'	'	'	'	'	'	'	'	212,897	202,722	207,110
Income (loss) from operations:	'	'	'	'	'	'	'	'	'	'	'
Income (loss) from operations	'	'	'	'	'	'	'	'	32,315	11,181	10,930
Operating Segments [Member] | Other operating segment [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenue:	'	'	'	'	'	'	'	'	'	'	'
Revenue	'	'	'	'	'	'	'	'	21	0	0
Income (loss) from operations:	'	'	'	'	'	'	'	'	'	'	'
Income (loss) from operations	'	'	'	'	'	'	'	'	-3,363	-2,766	-3,511
All other [Member]	'	'	'	'	'	'	'	'	'	'	'
Income (loss) from operations:	'	'	'	'	'	'	'	'	'	'	'
Income (loss) from operations	'	'	'	'	'	'	'	'	($111,473)	($76,669)	($44,552)

Operating_Segment_and_Geograph3

Operating Segment and Geographical Information (Details 1) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2014	Jun. 30, 2012	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Reconciliation of "All other" category:	'	'	'	'	'
Share-based compensation expense	'	'	($29,901)	($30,819)	($26,174)
Amortization of intangible assets	'	'	-28,638	-23,107	-18,390
Acquisition and integration related costs	-2,200	'	'	'	'
Loss on asset transfer transaction	'	-5,000	'	'	'
Income (loss) from operations	'	'	27,341	-15,680	24,643
All other [Member]	'	'	'	'	'
Reconciliation of "All other" category:	'	'	'	'	'
Share-based compensation expense	'	'	-29,901	-30,819	-26,174
Amortization of intangible assets	'	'	-28,638	-23,107	-18,390
Acquired inventory step-up and revaluation	'	'	0	-3,140	0
Impairment of intangible asset	'	'	-11,300	0	0
Acquisition and integration related costs	'	'	-8,105	-2,765	0
Restructuring and disposal costs associated with the phase out of manufacturing and sale of the U.K. facility	'	'	-8,118	-1,365	0
Loss on asset transfer transaction	'	'	0	-5,042	0
IPR litigation costs	'	'	-7,578	-5,955	0
Inventory revaluation resulting from transfer of MBE operations	'	'	0	-2,518	0
Certain consulting expense	'	'	-11,295	0	0
Other expenses (including restructuring, (gain) loss on property and equipment, and start-up costs)	'	'	-6,538	-1,958	12
Income (loss) from operations	'	'	($111,473)	($76,669)	($44,552)

Operating_Segment_and_Geograph4

Operating Segment and Geographical Information (Details 2) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2014	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Revenues from External Customers [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenue	$255,999	$288,520	$310,716	$292,996	$280,603	$271,213	$209,671	$202,660	$1,148,231	$964,147	$871,352
Geographic Concentration Risk [Member] | Sales [Member] | United States [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenue	'	'	'	'	'	'	'	'	342,805	296,442	246,661
Percentage	'	'	'	'	'	'	'	'	30.00%	31.00%	28.00%
Geographic Concentration Risk [Member] | Sales [Member] | International [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenue	'	'	'	'	'	'	'	'	$805,426	$667,705	$624,691
Geographic Concentration Risk [Member] | Sales [Member] | Asia [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Percentage	'	'	'	'	'	'	'	'	66.00%	63.00%	65.00%
Geographic Concentration Risk [Member] | Sales [Member] | Europe [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Percentage	'	'	'	'	'	'	'	'	4.00%	6.00%	5.00%
Geographic Concentration Risk [Member] | Sales [Member] | Central And South America [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Percentage	'	'	'	'	'	'	'	'	0.00%	0.00%	1.00%
Geographic Concentration Risk [Member] | Sales [Member] | Other [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Percentage	'	'	'	'	'	'	'	'	0.00%	0.00%	1.00%

Operating_Segment_and_Geograph5

Operating Segment and Geographical Information (Details 3) (USD $)	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
In Thousands, unless otherwise specified
Long-Lived Assets [Line Items]	'	'	'
Long-lived tangible assets	$195,996	$191,526	'
Geographic Concentration Risk [Member] | Property, Plant and Equipment [Member] | United States [Member]	'	'	'
Long-Lived Assets [Line Items]	'	'	'
Long-lived tangible assets	120,885	114,635	130,665
Geographic Concentration Risk [Member] | Property, Plant and Equipment [Member] | International [Member]	'	'	'
Long-Lived Assets [Line Items]	'	'	'
Long-lived tangible assets	$75,111	$76,891	$67,256

Operating_Segment_and_Geograph6

Operating Segment and Geographical Information (Details Textual) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2014	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Operating Segment and Geographic Information (Textual)	'	'	'	'	'	'	'	'	'	'	'
Revenue	$255,999	$288,520	$310,716	$292,996	$280,603	$271,213	$209,671	$202,660	$1,148,231	$964,147	$871,352
Long-lived tangible assets	195,996	'	'	'	191,526	'	'	'	195,996	191,526	'
Geographic Concentration Risk [Member] | Sales [Member] | China [Member]	'	'	'	'	'	'	'	'	'	'	'
Operating Segment and Geographic Information (Textual)	'	'	'	'	'	'	'	'	'	'	'
Percentage	'	'	'	'	'	'	'	'	41.00%	'	'
Revenue	'	'	'	'	'	'	'	'	468,000	'	'
Geographic Concentration Risk [Member] | Sales [Member] | Taiwan [Member]	'	'	'	'	'	'	'	'	'	'	'
Operating Segment and Geographic Information (Textual)	'	'	'	'	'	'	'	'	'	'	'
Percentage	'	'	'	'	'	'	'	'	17.00%	'	'
Revenue	'	'	'	'	'	'	'	'	190,600	'	'
Geographic Concentration Risk [Member] | Property, Plant and Equipment [Member] | China [Member]	'	'	'	'	'	'	'	'	'	'	'
Operating Segment and Geographic Information (Textual)	'	'	'	'	'	'	'	'	'	'	'
Percentage	'	'	'	'	'	'	'	'	36.00%	'	'
Long-lived tangible assets	$69,700	'	'	'	'	'	'	'	$69,700	'	'

Quarterly_Financial_Summary_Un2

Quarterly Financial Summary (Unaudited) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 29, 2014	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Quarterly Financial Summary (Unaudited)	'	'	'	'	'	'	'	'	'	'	'
Revenue	$255,999	$288,520	$310,716	$292,996	$280,603	$271,213	$209,671	$202,660	$1,148,231	$964,147	$871,352
Gross profit	99,279	107,523	104,656	93,469	88,216	86,810	66,535	64,254	404,927	305,815	288,766
Net income (loss)	($1,046)	$6,235	$5,892	$1,561	($15,961)	($1,443)	($16,456)	($19,139)	$12,642	($52,999)	$857
Net (loss) income per share:	'	'	'	'	'	'	'	'	'	'	'
Basic	$0	$0.02	$0.02	$0.01	($0.06)	($0.01)	($0.06)	($0.07)	$0.04	($0.19)	$0
Diluted	$0	$0.02	$0.02	$0.01	($0.06)	($0.01)	($0.06)	($0.07)	$0.04	($0.19)	$0

Quarterly_Financial_Summary_Un3

Quarterly Financial Summary (Unaudited) (Details Textual) (USD $)

3 Months Ended

12 Months Ended

3 Months Ended

5 Months Ended

12 Months Ended

3 Months Ended

Mar. 29, 2014

Dec. 28, 2013

Sep. 28, 2013

Jun. 29, 2013

Jun. 30, 2012

Mar. 29, 2014

Mar. 30, 2013

Mar. 31, 2012

Mar. 30, 2013

Dec. 29, 2012

Mar. 30, 2013

Mar. 30, 2013

Mar. 29, 2014

Mar. 29, 2014

Amalfi [Member]

Amalfi [Member]

Amalfi [Member]

Amalfi [Member]

Operating Expense Reductions [Member]

Operating Expense Reductions [Member]

In-process research and development [Member]

Loss On Asset Transfer

'

'

'

'

$5,000,000

'

'

'

'

'

'

'

'

'

Revenue

'

'

'

'

'

'

'

'

11,100,000

5,400,000

16,500,000

'

'

'

Income (loss) from operations

'

'

'

'

'

27,341,000

-15,680,000

24,643,000

-3,600,000

-5,900,000

-9,500,000

'

'

'

Restructuring costs

2,900,000

3,000,000

2,300,000

2,900,000

'

11,100,000

'

'

'

'

'

1,300,000

2,500,000

'

Acquisition-related costs

'

2,900,000

'

'

'

'

'

'

'

'

'

1,500,000

'

'

Impairment of Intangible Asset

'

'

'

'

'

'

'

'

'

'

'

'

'

11,300,000

Business Combination, Acquisition And Integration related costs

$2,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Valuation_and_Qualifying_Accou1

Valuation and Qualifying Accounts (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Allowance for doubtful accounts [Member]	'	'	'
Valuation and Qualifying Accounts [Rollforward]	'	'	'
Balance at Beginning of Period	$434	$353	$800
Additions Charged to Costs and Expenses	0	116	0
Deductions from Reserve	121	35	447
Balance at End of Period	313	434	353
Inventory reserve [Member]	'	'	'
Valuation and Qualifying Accounts [Rollforward]	'	'	'
Balance at Beginning of Period	21,644	22,461	20,082
Additions Charged to Costs and Expenses	6,982	4,907	6,161
Deductions from Reserve	2,053	5,724	3,782
Balance at End of Period	$26,573	$21,644	$22,461

Valuation_and_Qualifying_Accou2

Valuation and Qualifying Accounts (Details Textual) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Valuation and Qualifying Accounts [Abstract]	'	'	'
Write-offs of fully reserved balance against related receivables [less than for fiscal 2014 and fiscal 2013]	$0.10	$0.10	$0.10