Guarantor Financial Information Condensed Consolidated Statements of Operations (Details) (USD $)	3 Months Ended		6 Months Ended
	Jul. 02, 2011	Jul. 03, 2010	Jul. 02, 2011	Jul. 03, 2010
Net sales	$ 470,610,000	$ 166,210,000	$ 910,508,000	$ 328,992,000
Costs and expenses:
Cost of sales and operating expenses	325,228,000	123,853,000	626,619,000	244,263,000
Selling, general and administrative expenses	34,092,000	16,237,000	64,785,000	32,002,000
Depreciation and amortization	19,055,000	7,206,000	38,736,000	14,230,000
Total costs and expenses	378,375,000	147,296,000	730,140,000	290,495,000
Operating income	92,235,000	18,914,000	180,368,000	38,497,000
Interest expense	(7,745,000)	(889,000)	(21,973,000)	(1,799,000)
Other, net	(830,000)	(448,000)	(1,396,000)	(982,000)
Equity in net loss of unconsolidated subsidiary	(1,174,000)	0	(1,174,000)	0
Earnings in investments in subsidiaries	0	0	0	0
Income from operations before income taxes	82,486,000	17,577,000	155,825,000	35,716,000
Income taxes	30,259,000	6,206,000	57,036,000	12,867,000
Net income	52,227,000	11,371,000	98,789,000	22,849,000
Issuer [Member]
Net sales	183,604,000	132,470,000	358,259,000	257,385,000
Costs and expenses:
Cost of sales and operating expenses	135,325,000	99,717,000	267,379,000	195,358,000
Selling, general and administrative expenses	17,524,000	14,873,000	32,711,000	29,264,000
Depreciation and amortization	5,571,000	5,336,000	11,755,000	10,458,000
Total costs and expenses	158,420,000	119,926,000	311,845,000	235,080,000
Operating income	25,184,000	12,544,000	46,414,000	22,305,000
Interest expense	(7,745,000)	(888,000)	(21,972,000)	(1,797,000)
Other, net	(648,000)	(120,000)	(1,106,000)	(313,000)
Equity in net loss of unconsolidated subsidiary	0		0
Earnings in investments in subsidiaries	41,588,000	3,930,000	83,995,000	9,929,000
Income from operations before income taxes	58,379,000	15,466,000	107,331,000	30,124,000
Income taxes	6,152,000	4,095,000	8,542,000	7,275,000
Net income	52,227,000	11,371,000	98,789,000	22,849,000
Guarantors [Member]
Net sales	327,243,000	64,650,000	634,357,000	135,512,000
Costs and expenses:
Cost of sales and operating expenses	230,335,000	55,046,000	441,834,000	112,810,000
Selling, general and administrative expenses	16,527,000	1,364,000	31,993,000	2,738,000
Depreciation and amortization	13,473,000	1,870,000	26,970,000	3,772,000
Total costs and expenses	260,335,000	58,280,000	500,797,000	119,320,000
Operating income	66,908,000	6,370,000	133,560,000	16,192,000
Interest expense	0	(1,000)	(1,000)	(2,000)
Other, net	(283,000)	6,000	(385,000)	8,000
Equity in net loss of unconsolidated subsidiary	0		0
Earnings in investments in subsidiaries	0	0	0	0
Income from operations before income taxes	66,625,000	6,375,000	133,174,000	16,198,000
Income taxes	24,448,000	2,229,000	48,745,000	5,836,000
Net income	42,177,000	4,146,000	84,429,000	10,362,000
Non-guarantors [Member]
Net sales	4,683,000	0	11,232,000	0
Costs and expenses:
Cost of sales and operating expenses	4,489,000	0	10,746,000	0
Selling, general and administrative expenses	41,000	0	81,000	0
Depreciation and amortization	11,000	0	11,000	0
Total costs and expenses	4,541,000	0	10,838,000	0
Operating income	142,000	0	394,000	0
Interest expense	0	0	0	0
Other, net	102,000	(334,000)	95,000	(677,000)
Equity in net loss of unconsolidated subsidiary	(1,174,000)		(1,174,000)
Earnings in investments in subsidiaries	0	0	0	0
Income from operations before income taxes	(930,000)	(334,000)	(685,000)	(677,000)
Income taxes	(341,000)	(118,000)	(251,000)	(244,000)
Net income	(589,000)	(216,000)	(434,000)	(433,000)
Eliminations [Member]
Net sales	(44,920,000)	(30,910,000)	(93,340,000)	(63,905,000)
Costs and expenses:
Cost of sales and operating expenses	(44,921,000)	(30,910,000)	(93,340,000)	(63,905,000)
Selling, general and administrative expenses	0	0	0	0
Depreciation and amortization	0	0	0	0
Total costs and expenses	(44,921,000)	(30,910,000)	(93,340,000)	(63,905,000)
Operating income	1,000	0	0	0
Interest expense	0	0	0	0
Other, net	(1,000)	0	0	0
Equity in net loss of unconsolidated subsidiary	0		0
Earnings in investments in subsidiaries	(41,588,000)	(3,930,000)	(83,995,000)	(9,929,000)
Income from operations before income taxes	(41,588,000)	(3,930,000)	(83,995,000)	(9,929,000)
Income taxes	0	0	0	0
Net income	$ (41,588,000)	$ (3,930,000)	$ (83,995,000)	$ (9,929,000)