Supplemental Guarantor Information (Details 1) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2011	Oct. 03, 2010	Oct. 02, 2011	Oct. 03, 2010
Consolidated Statements of Operations [Abstract]
Revenues	$ 519,713	$ 396,927	$ 1,517,592	$ 1,191,914
Cost of sales	(366,962)	(278,743)	(1,077,772)	(846,016)
Gross profit	152,751	118,184	439,820	345,898
Selling, general and administrative expenses	(85,355)	(66,164)	(244,671)	(203,306)
Research and development	(13,641)	(10,887)	(41,800)	(31,106)
Amortization of intangibles	(3,371)	(2,600)	(10,397)	(7,900)
Income from equity method investment	1,479	3,053	9,196	8,905
Operating income	51,863	41,586	152,148	112,491
Interest expense	(11,690)	(11,778)	(36,246)	(38,910)
Interest income	211	80	526	398
Other income				1,465
Income (loss) from continuing operations before taxes	40,384	29,888	116,428	75,444
Income tax expense	(9,019)	(7,244)	(28,164)	(16,885)
Income (loss) from continuing operations	31,365	22,644	88,264	58,559
Loss from discontinued operations, net of tax	(162)	(2,039)	(446)	(6,535)
Net income (loss)	31,203	20,605	87,818	52,024
Issuer [Member]
Consolidated Statements of Operations [Abstract]
Revenues	270,679	242,794	792,028	639,496
Cost of sales	(207,466)	(168,201)	(596,368)	(452,287)
Gross profit	63,213	74,593	195,660	187,209
Selling, general and administrative expenses	(46,932)	(42,272)	(130,750)	(117,205)
Research and development	(2,486)	(3,315)	(8,136)	(8,601)
Amortization of intangibles	(820)	(727)	(2,460)	(2,193)
Operating income	12,975	28,279	54,314	59,210
Interest expense	(11,662)	(11,451)	(35,606)	(38,676)
Interest income	12	45	84	124
Intercompany income (expense)	9,622	(514)	(5,064)	(820)
Income (loss) from equity investment in subsidiaries	22,936	10,658	78,589	42,936
Income (loss) from continuing operations before taxes	33,883	27,017	92,317	62,774
Income tax expense	(2,518)	(4,373)	(4,053)	(4,215)
Income (loss) from continuing operations	31,365	22,644	88,264	58,559
Loss from discontinued operations, net of tax	(162)	(2,039)	(446)	(6,535)
Net income (loss)	31,203	20,605	87,818	52,024
Non-Guarantor Subsidiaries [Member]
Consolidated Statements of Operations [Abstract]
Revenues	316,087	193,624	887,652	667,123
Cost of sales	(226,549)	(150,033)	(643,492)	(508,434)
Gross profit	89,538	43,591	244,160	158,689
Selling, general and administrative expenses	(38,423)	(23,892)	(113,921)	(86,101)
Research and development	(11,155)	(7,572)	(33,664)	(22,505)
Amortization of intangibles	(2,551)	(1,873)	(7,937)	(5,707)
Income from equity method investment	1,479	3,053	9,196	8,905
Operating income	38,888	13,307	97,834	53,281
Interest expense	(28)	(327)	(640)	(234)
Interest income	199	35	442	274
Other income				1,465
Intercompany income (expense)	(9,622)	514	5,064	820
Income (loss) from continuing operations before taxes	29,437	13,529	102,700	55,606
Income tax expense	(6,501)	(2,871)	(24,111)	(12,670)
Income (loss) from continuing operations	22,936	10,658	78,589	42,936
Net income (loss)	22,936	10,658	78,589	42,936
Eliminations [Member]
Consolidated Statements of Operations [Abstract]
Revenues	(67,053)	(39,491)	(162,088)	(114,705)
Cost of sales	67,053	39,491	162,088	114,705
Income (loss) from equity investment in subsidiaries	(22,936)	(10,658)	(78,589)	(42,936)
Income (loss) from continuing operations before taxes	(22,936)	(10,658)	(78,589)	(42,936)
Income (loss) from continuing operations	(22,936)	(10,658)	(78,589)	(42,936)
Net income (loss)	$ (22,936)	$ (10,658)	$ (78,589)	$ (42,936)