CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Noncontrolling Interest [Member]
Beginning Balance at Jan. 02, 2010	$ 419,625	$ 45,093	$ 19,695	$ 355,270	$ (774)	$ 341
Comprehensive income:
Net income (loss)	27,123			26,941		182
Other comprehensive income	2,433				2,433
Distributions to noncontrolling interest	(52)					(52)
Cash dividends	(38,737)			(38,737)
Common shares – treasury:
Shares purchased	(17,817)	(655)	(17,162)
Shares issued under Members’ Stock Purchase Plan and stock awards	15,881	403	15,478
Ending Balance at Jan. 01, 2011	408,456	44,841	18,011	343,474	1,659	471
Comprehensive income:
Net income (loss)	45,748			45,986		(238)
Other comprehensive income	56				56
Distributions to noncontrolling interest	(87)					(87)
Change in ownership of noncontrolling interest	119					119
Cash dividends	(41,250)			(41,250)
Common shares – treasury:
Shares purchased	(10,000)	(324)	(9,676)
Shares issued under Members’ Stock Purchase Plan and stock awards	16,280	338	15,942
Ending Balance at Dec. 31, 2011	419,322	44,855	24,277	348,210	1,715	265
Comprehensive income:
Net income (loss)	48,326			48,967		(641)
Other comprehensive income	(402)				(402)
Distributions to noncontrolling interest	(124)					(124)
Change in ownership of noncontrolling interest	607			(194)		801
Cash dividends	(43,041)			(43,041)
Common shares – treasury:
Shares purchased	(21,021)	(800)	(20,221)
Shares issued under Members’ Stock Purchase Plan and stock awards	16,993	896	16,097
Ending Balance at Dec. 29, 2012	$ 420,660	$ 44,951	$ 20,153	$ 353,942	$ 1,313	$ 301