Guarantor Financial Information Condensed Consolidated Statements of Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended									12 Months Ended
	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Jan. 01, 2011		Oct. 02, 2010	Jul. 03, 2010	Apr. 03, 2010	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Net sales	$ 430,866	$ 455,875	$ 470,610	$ 439,898	$ 227,232		$ 168,685	$ 166,210	$ 162,782	$ 1,797,249	$ 724,909	$ 597,806
Costs and expenses:
Cost of sales and operating expenses										1,267,599	531,648	440,111
Selling, general and administrative expenses										136,135	68,042	61,062
Depreciation and amortization										78,909	31,908	25,226
Acquisition costs										0	10,798	468
Total costs and expenses										1,482,643	642,396	526,867
Operating income	59,477	74,761	92,235	88,133	24,698		19,318	18,914	19,583	314,606	82,513	70,939
Interest expense										(37,163)	(8,737)	(3,105)
Other, net										(3,577)	(3,433)	(955)
Equity in net loss of unconsolidated subsidiary										(1,572)	0	0
Earnings in investments in subsidiaries										0	0	0
Income/(loss) from operations before income taxes	50,328	66,141	82,486	73,339	16,923		17,704	17,577	18,139	272,294	70,343	66,879
Income taxes (benefit)										102,876	26,100	25,089
Net income/(loss)	29,497	41,132	52,227	46,562	10,012	[1]	11,382	11,371	11,478	169,418	44,243	41,790
Issuer [Member]
Net sales										721,990	560,270	443,270
Costs and expenses:
Cost of sales and operating expenses										553,061	421,959	331,037
Selling, general and administrative expenses										67,829	60,282	55,198
Depreciation and amortization										23,531	21,768	17,944
Acquisition costs											10,798	468
Total costs and expenses										644,421	514,807	404,647
Operating income										77,569	45,463	38,623
Interest expense										(37,161)	(8,735)	(3,105)
Other, net										(2,690)	(1,772)	(1,022)
Equity in net loss of unconsolidated subsidiary										0
Earnings in investments in subsidiaries										145,950	22,258	20,235
Income/(loss) from operations before income taxes										183,668	57,214	54,731
Income taxes (benefit)										14,250	12,971	12,941
Net income/(loss)										169,418	44,243	41,790
Guarantors [Member]
Net sales										1,238,858	302,074	269,686
Costs and expenses:
Cost of sales and operating expenses										878,812	247,188	224,224
Selling, general and administrative expenses										68,149	7,750	5,864
Depreciation and amortization										55,356	10,140	7,282
Acquisition costs											0	0
Total costs and expenses										1,002,317	265,078	237,370
Operating income										236,541	36,996	32,316
Interest expense										(2)	(2)	0
Other, net										(944)	(1,066)	601
Equity in net loss of unconsolidated subsidiary										0
Earnings in investments in subsidiaries										0	0	0
Income/(loss) from operations before income taxes										235,595	35,928	32,917
Income taxes (benefit)										89,011	13,330	12,348
Net income/(loss)										146,584	22,598	20,569
Non-guarantors [Member]
Net sales										27,484	813	0
Costs and expenses:
Cost of sales and operating expenses										26,809	749	0
Selling, general and administrative expenses										157	10	0
Depreciation and amortization										22	0	0
Acquisition costs											0	0
Total costs and expenses										26,988	759	0
Operating income										496	54	0
Interest expense										0	0	0
Other, net										57	(595)	(534)
Equity in net loss of unconsolidated subsidiary										(1,572)
Earnings in investments in subsidiaries										0	0	0
Income/(loss) from operations before income taxes										(1,019)	(541)	(534)
Income taxes (benefit)										(385)	(201)	(200)
Net income/(loss)										(634)	(340)	(334)
Eliminations [Member]
Net sales										(191,083)	(138,248)	(115,150)
Costs and expenses:
Cost of sales and operating expenses										(191,083)	(138,248)	(115,150)
Selling, general and administrative expenses										0	0	0
Depreciation and amortization										0	0	0
Acquisition costs											0	0
Total costs and expenses										(191,083)	(138,248)	(115,150)
Operating income										0	0	0
Interest expense										0	0	0
Other, net										0	0	0
Equity in net loss of unconsolidated subsidiary										0
Earnings in investments in subsidiaries										(145,950)	(22,258)	(20,235)
Income/(loss) from operations before income taxes										(145,950)	(22,258)	(20,235)
Income taxes (benefit)										0	0	0
Net income/(loss)										$ (145,950)	$ (22,258)	$ (20,235)

[1] Included in net income in the fourth quarter of fiscal 2010 are costs incurred as part of the Griffin Transaction for consulting, legal and financing in the amount of approximately $13.7 million.