Guarantor Financial Information (Condensed Consolidated Statements of Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011
Cash flows from operating activities:
Net income	$ 101,968	$ 139,921
Earnings in investments in subsidiaries	0	0
Other operating cash flows	96,508	34,245
Net cash provided by operating activities	198,476	174,166
Cash flows from investing activities:
Capital expenditures	(84,154)	(44,021)
Acquisition	(3,000)	(164)
Investment in unconsolidated subsidiary	(34,416)	(14,242)
Gross proceeds from disposal of property, plant and equipment and other assets	2,989	1,000
Net cash used by investing activities	(118,581)	(57,427)
Cash flows from financing activities:
Payments on long-term debt	(30,013)	(240,007)
Borrowings from revolving credit facility	0	131,000
Repayments of Long-term Lines of Credit	0	(291,000)
Deferred loan costs	0	(482)
Issuance of common stock	64	293,189
Proceeds from Contributions from Parent		0
Minimum withholding taxes paid on stock awards	(3,365)	(1,217)
Excess tax benefits from stock-based compensation	2,169	1,126
Net cash used by financing activities	(31,145)	(107,391)
Net increase (decrease) in cash and cash equivalents	48,750	9,348
Cash and cash equivalents at beginning of period	38,936	19,202
Cash and cash equivalents at end of period	87,686	28,550
Issuer [Member]
Cash flows from operating activities:
Net income	101,968	139,921
Earnings in investments in subsidiaries	(92,728)	(120,745)
Other operating cash flows	142,681	129,834
Net cash provided by operating activities	151,921	149,010
Cash flows from investing activities:
Capital expenditures	(37,183)	(16,904)
Acquisition	(3,000)	(164)
Investment in unconsolidated subsidiary	(34,441)	(14,267)
Gross proceeds from disposal of property, plant and equipment and other assets	1,580	714
Net cash used by investing activities	(73,044)	(30,621)
Cash flows from financing activities:
Payments on long-term debt	(30,000)	(240,000)
Borrowings from revolving credit facility		131,000
Repayments of Long-term Lines of Credit		(291,000)
Deferred loan costs		(482)
Issuance of common stock	64	293,189
Proceeds from Contributions from Parent	0	0
Minimum withholding taxes paid on stock awards	(3,365)	(1,217)
Excess tax benefits from stock-based compensation	2,169	1,126
Net cash used by financing activities	(31,132)	(107,384)
Net increase (decrease) in cash and cash equivalents	47,745	11,005
Cash and cash equivalents at beginning of period	35,207	13,108
Cash and cash equivalents at end of period	82,952	24,113
Guarantors [Member]
Cash flows from operating activities:
Net income	93,596	121,165
Earnings in investments in subsidiaries	0	0
Other operating cash flows	(45,631)	(95,774)
Net cash provided by operating activities	47,965	25,391
Cash flows from investing activities:
Capital expenditures	(46,971)	(27,117)
Acquisition	0	0
Investment in unconsolidated subsidiary	0	0
Gross proceeds from disposal of property, plant and equipment and other assets	1,409	286
Net cash used by investing activities	(45,562)	(26,831)
Cash flows from financing activities:
Payments on long-term debt	(13)	(7)
Borrowings from revolving credit facility		0
Repayments of Long-term Lines of Credit		0
Deferred loan costs		0
Issuance of common stock	0	0
Proceeds from Contributions from Parent	0	0
Minimum withholding taxes paid on stock awards	0	0
Excess tax benefits from stock-based compensation	0	0
Net cash used by financing activities	(13)	(7)
Net increase (decrease) in cash and cash equivalents	2,390	(1,447)
Cash and cash equivalents at beginning of period	1,773	5,480
Cash and cash equivalents at end of period	4,163	4,033
Non-guarantors [Member]
Cash flows from operating activities:
Net income	(868)	(420)
Earnings in investments in subsidiaries	0	0
Other operating cash flows	(542)	185
Net cash provided by operating activities	(1,410)	(235)
Cash flows from investing activities:
Capital expenditures	0	0
Acquisition	0	0
Investment in unconsolidated subsidiary	(34,416)	(14,242)
Gross proceeds from disposal of property, plant and equipment and other assets	0	0
Net cash used by investing activities	(34,416)	(14,242)
Cash flows from financing activities:
Payments on long-term debt	0	0
Borrowings from revolving credit facility		0
Repayments of Long-term Lines of Credit		0
Deferred loan costs		0
Issuance of common stock	0	0
Proceeds from Contributions from Parent	34,441	14,267
Minimum withholding taxes paid on stock awards	0	0
Excess tax benefits from stock-based compensation	0	0
Net cash used by financing activities	34,441	14,267
Net increase (decrease) in cash and cash equivalents	(1,385)	(210)
Cash and cash equivalents at beginning of period	1,956	614
Cash and cash equivalents at end of period	571	404
Eliminations [Member]
Cash flows from operating activities:
Net income	(92,728)	(120,745)
Earnings in investments in subsidiaries	92,728	120,745
Other operating cash flows	0	0
Net cash provided by operating activities	0	0
Cash flows from investing activities:
Capital expenditures	0	0
Acquisition	0	0
Investment in unconsolidated subsidiary	34,441	14,267
Gross proceeds from disposal of property, plant and equipment and other assets	0	0
Net cash used by investing activities	34,441	14,267
Cash flows from financing activities:
Payments on long-term debt	0	0
Borrowings from revolving credit facility		0
Repayments of Long-term Lines of Credit		0
Deferred loan costs		0
Issuance of common stock	0	0
Proceeds from Contributions from Parent	(34,441)	(14,267)
Minimum withholding taxes paid on stock awards	0	0
Excess tax benefits from stock-based compensation	0	0
Net cash used by financing activities	(34,441)	(14,267)
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	$ 0	$ 0