Supplemental Guarantor Information (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Oct. 02, 2011	Jul. 03, 2011	Apr. 03, 2011	Dec. 31, 2010	Oct. 03, 2010	Jul. 04, 2010	Apr. 04, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Consolidated Statements of Operations [Abstract]
Revenues	$ 464,361	$ 519,713	$ 536,251	$ 461,628	$ 425,176	$ 396,927	$ 410,563	$ 384,424	$ 1,981,953	$ 1,617,090	$ 1,362,016
Cost of sales									(1,410,134)	(1,149,796)	(974,331)
Gross profit	131,999	152,751	156,614	130,455	121,396	118,184	117,304	110,410	571,819	467,294	387,685
Selling, general and administrative expenses									(325,950)	(279,677)	(262,473)
Research and development									(55,711)	(42,605)	(40,441)
Amortization of intangibles									(13,772)	(11,189)	(9,871)
Income from equity method investment									13,169	11,940	6,405
Asset impairment	(2,500)				(16,600)				(2,549)	(16,574)	(27,751)
Loss on sale of assets											(17,184)
Operating income	34,858	51,863	58,212	42,073	16,698	41,586	39,610	31,295	187,006	129,189	36,370
Interest expense									(48,126)	(49,826)	(41,962)
Interest income									1,011	1,184	1,043
Other income (expense)										1,465	(1,541)
Income (loss) from continuing operations before taxes									139,891	82,012	(6,090)
Income tax expense									(24,638)	(12,714)	(1,175)
Income (loss) from continuing operations	26,989	31,365	34,881	22,018	10,739	22,644	21,585	14,330	115,253	69,298	(7,265)
Loss from discontinued operations, net of tax	(462)	(162)	(156)	(128)	849	(2,039)	(1,913)	(2,583)	(908)	(5,686)	(17,636)
Gain from disposal of discontinued operations, net of tax					44,847					44,847
Net income (loss)	26,527	31,203	34,725	21,890	56,435	20,605	19,672	11,747	114,345	108,459	(24,901)
Issuer [Member]
Consolidated Statements of Operations [Abstract]
Revenues									1,056,363	874,866	681,997
Cost of sales									(789,599)	(616,401)	(480,650)
Gross profit									266,764	258,465	201,347
Selling, general and administrative expenses									(177,903)	(161,675)	(124,510)
Research and development									(12,194)	(11,915)	(9,623)
Amortization of intangibles									(4,851)	(3,523)	(2,008)
Asset impairment									(2,549)	(10,790)	(4,343)
Operating income									69,267	70,562	60,863
Interest expense									(47,011)	(48,829)	(41,488)
Interest income									94	159	254
Other income (expense)											(1,541)
Intercompany income (expense)									13,709	(7,876)	88
Income (loss) from equity investment in subsidiaries									81,750	50,194	(21,059)
Income (loss) from continuing operations before taxes									117,809	64,210	(2,883)
Income tax expense									(2,556)	5,088	(4,382)
Income (loss) from continuing operations									115,253	69,298	(7,265)
Loss from discontinued operations, net of tax									(908)	(5,686)	(17,636)
Gain from disposal of discontinued operations, net of tax										44,847
Net income (loss)									114,345	108,459	(24,901)
Non-Guarantor Subsidiaries [Member]
Consolidated Statements of Operations [Abstract]
Revenues									1,140,060	916,504	835,322
Cost of sales									(835,005)	(707,675)	(648,984)
Gross profit									305,055	208,829	186,338
Selling, general and administrative expenses									(148,047)	(118,002)	(137,963)
Research and development									(43,517)	(30,690)	(30,818)
Amortization of intangibles									(8,921)	(7,666)	(7,863)
Income from equity method investment									13,169	11,940	6,405
Asset impairment										(5,784)	(23,408)
Loss on sale of assets											(17,184)
Operating income									117,739	58,627	(24,493)
Interest expense									(1,115)	(997)	(474)
Interest income									917	1,025	789
Other income (expense)										1,465
Intercompany income (expense)									(13,709)	7,876	(88)
Income (loss) from continuing operations before taxes									103,832	67,996	(24,266)
Income tax expense									(22,082)	(17,802)	3,207
Income (loss) from continuing operations									81,750	50,194	(21,059)
Net income (loss)									81,750	50,194	(21,059)
Eliminations [Member]
Consolidated Statements of Operations [Abstract]
Revenues									(214,470)	(174,280)	(155,303)
Cost of sales									214,470	174,280	155,303
Income (loss) from equity investment in subsidiaries									(81,750)	(50,194)	21,059
Income (loss) from continuing operations before taxes									(81,750)	(50,194)	21,059
Income (loss) from continuing operations									(81,750)	(50,194)	21,059
Net income (loss)									$ (81,750)	$ (50,194)	$ 21,059