Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended												12 Months Ended
	Mar. 30, 2014		Dec. 29, 2013		Sep. 29, 2013		Jun. 30, 2013	Mar. 31, 2013		Dec. 30, 2012	Sep. 30, 2012	Jul. 01, 2012	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Segment Reporting Information [Line Items]
Revenues by segment	$ 118,640	[1]	$ 124,628	[2]	$ 124,047	[3]	$ 117,464	$ 107,779	[4]	$ 114,277	$ 132,441	$ 129,955	$ 484,779	$ 484,452	$ 526,696
Amortization of intangible assets													(24,793)	(20,546)	(16,489)
Impairment of acquired in-process R&D													(7,230)	0	0
Amortization of stock-based compensation													(13,352)	(13,272)	(16,733)
Other-than-temporary loss on investments													0	(1,708)	(2,797)
Interest income (expense) and other, net													2,707	1,708	(1,118)
Income from continuing operations, before income taxes													112,294	591	38,221
Communications
Segment Reporting Information [Line Items]
Revenues by segment													292,435	258,184	248,370
Income from continuing operations, before income taxes													103,457	78,995	82,178
Computing and Consumer
Segment Reporting Information [Line Items]
Revenues by segment													192,344	226,268	278,326
Income from continuing operations, before income taxes													(22,658)	(30,972)	(21,247)
Unallocated expenses:
Segment Reporting Information [Line Items]
Amortization of intangible assets													(21,964)	(16,339)	(16,355)
Inventory fair market value adjustment													0	(358)	0
Impairment of acquired in-process R&D													(2,433)	0	0
Gain on divestiture													78,632	7,986	20,656
Fabrication production transfer costs													0	0	(4,572)
Asset impairments and other													(4,113)	(6,096)	315
Amortization of stock-based compensation													(12,677)	(13,054)	(16,333)
Acquisition-related costs and other													(6,590)	(5,584)	(2,151)
Acquisition-related costs and other													(802)	(11,238)	(168)
Consulting expenses related to stockholder activities													0	(1,614)	0
Deferred compensation plan expense (benefit)													51	(194)	(74)
Life insurance proceeds received													0	2,313	0
Other-than-temporary loss on investments													0	(1,708)	(2,797)
Interest income (expense) and other, net													$ 1,391	$ (1,546)	$ (1,231)
Maxtek | Customer Concentration Risk | Sales Revenue, Goods, Net
Segment Reporting Information [Line Items]
Concentration risk (percentage)														13.00%	15.00%
Avnet | Customer Concentration Risk | Sales Revenue, Goods, Net
Segment Reporting Information [Line Items]
Concentration risk (percentage)													12.00%	10.00%	11.00%
Uniquest | Customer Concentration Risk | Sales Revenue, Goods, Net
Segment Reporting Information [Line Items]
Concentration risk (percentage)														10.00%	10.00%

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

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

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

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