Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 30, 2012	Jan. 01, 2012	Dec. 30, 2012	Jan. 01, 2012
Segment Reporting Information [Line Items]
Revenues by segment	$ 115,147	$ 119,977	$ 378,709	$ 407,580
Income (loss) before income taxes from continuing operations	(4,956)	(327)	(9,115)	21,142
Communications [Member]
Segment Reporting Information [Line Items]
Revenues by segment	65,592	55,513	197,955	192,048
Income (loss) before income taxes from continuing operations	17,211	16,923	54,256	69,374
Computing and Consumer [Member]
Segment Reporting Information [Line Items]
Revenues by segment	49,555	64,464	180,754	215,532
Income (loss) before income taxes from continuing operations	(9,842)	(6,836)	(17,875)	(16,536)
Unallocated expenses [Member]
Segment Reporting Information [Line Items]
Interest income and other, net	(344)	(2,140)	(862)	(3,924)
Inventory fair market value adjustment	0	0	(458)	0
Fabrication production transfer costs	0	(1,233)	0	(3,893)
Assets impairment	(527)	73	(409)	255
Allocated Share-based Compensation Expense to a Segment	(2,774)	(4,312)	(9,513)	(12,365)
Severance, retention and facility closure costs	(921)	1,962	(3,920)	(665)
Acquisition-related costs and other	(2,999)	(109)	(14,465)	(109)
Consulting expenses related to stockholder activities	0	0	(2,614)	0
Deferred compensation plan expense (benefit)	(87)	(649)	(431)	633
Proceeds from Life Insurance Policies	0	0	2,313	0
Amortization of Intangibles to Segments	$ (4,673)	$ (4,006)	$ (15,137)	$ (11,628)