Statements of Shareholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Noncontrolling Interest
Beginning Balance at Jan. 03, 2010	$ 665,098	$ 516	$ 351,550	$ 365,927	$ 5,496	$ (58,888)	$ 497
Beginning Balance, Shares		64,432,000				20,074,000
Proceeds from stock options exercised	6,695	14	6,681
Proceeds from stock options exercised, Shares		1,353,000
Tax benefit related to equity compensation	3,926		3,926
Stock based compensation expense	1,378		1,378
Restricted stock granted, Shares		40,000
Restricted stock cancelled, Value	(1)	(1)
Restricted stock cancelled, Shares		(41,000)
Amortizatoin of restricted stock	3,261		3,261
Common stock issued in business combination (Note 2)	358,076	158	357,918
Common stock issued in business combination, Shares		15,764,000
Noncontrolling interest acquired in business combination (Note 2)	20,700						20,700
Retirement of common stock, Value	(7,078)	158	(6,225)	(850)		(161)
Retirement of common stock, Shares		(314,000)
Purchase of treasury shares, Amount	(80,000)					(80,000)
Purchase of treasury shares, Shares		(3,999,000)				3,999,000
Comprehensive income (loss)
Net income (loss):	62,790			63,468			(678)
Other comprehensive loss	4,645				4,575		70
Ending Balance at Jan. 02, 2011	1,039,490	845	718,489	428,545	10,071	(139,049)	20,589
Beginning Balance, Shares		61,181,000				24,004,000
Proceeds from stock options exercised	2,446	3	2,443
Proceeds from stock options exercised, Shares		298,000
Tax benefit related to equity compensation	465		465
Stock based compensation expense	2,681		2,681
Restricted stock granted	0	4	(4)
Restricted stock granted, Shares		381,000
Amortizatoin of restricted stock	3,432		3,432
Purchase of treasury shares, Amount	(74,982)					(74,982)
Purchase of treasury shares, Shares		(3,930,000)				3,930,000
Comprehensive income (loss)
Net income (loss):	77,463			78,625			(1,162)
Other comprehensive loss	(8,253)				(8,141)		(112)
Distribution to noncontrolling interest	(4,012)						(4,012)
Other adjustments to Additional Paid-In Capital	(209)		(209)
Ending Balance at Jan. 01, 2012	1,038,521	852	727,297	507,170	1,930	(214,031)	15,303
Beginning Balance, Shares		71,417,000				14,590,000
Proceeds from stock options exercised	9,276	6	9,270
Proceeds from stock options exercised, Shares	593,000	593,000
Tax benefit related to equity compensation	621		621
Stock based compensation expense	2,539		2,539
Restricted stock granted	0	3	(3)
Restricted stock granted, Shares		315,000
Restricted stock cancelled, Value	0	0
Restricted stock cancelled, Shares		(28,000)
Amortizatoin of restricted stock	4,449		4,449
Retirement of common stock, Value	(1,036)	(1)	(628)	(407)
Retirement of common stock, Shares	(57,457)	58,000
Purchase of treasury shares, Amount	(8,666)					(8,666)
Purchase of treasury shares, Shares		(298,000)				298,000
Comprehensive income (loss)
Net income (loss):	133,898			134,750			(852)
Other comprehensive loss	624				740		(116)
Distribution to noncontrolling interest	(5,758)						(5,758)
Dividends, Common Stock, Cash	(102,435)			(102,435)
Stock Dividends, Shares	9,688,568	9,689,000				(9,689,000)
Dividends, Stock	0		105,784	(274,402)		168,618
Re-issuance of treasury shares (ESPP), value	460		5	(9)		464
Re-issuance of treasury shares (ESPP), Shares		23,000				(23,000)
Increase in Ownership of Subsidiary (MCF)	(25,138)		(17,053)				(8,085)
Other adjustments to Additional Paid-In Capital	(51)		(51)
Ending Balance at Dec. 31, 2012	$ 1,047,304	$ 860	$ 832,230	$ 264,667	$ 2,670	$ (53,615)	$ 492