Divestitures (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 30, 2011	Dec. 31, 2010	Dec. 25, 2009
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net cash proceed from divestiture	$ 1,041	$ 55,427	$ 207,809
Electrical [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	0	203,014	261,101
Earnings (loss) before income taxes	(28)	(9,491)	(67,854)
Net cash proceed from divestiture		53,300
Medtech [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	0	0	49,704
Earnings (loss) before income taxes	0	788	(44,025)
MEMS [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	0	188	1,532
Earnings (loss) before income taxes	$ 0	$ (142)	$ (6,168)