CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss)/Income [Member]	Non-controlling Interest [Member]
Balance beginning of period at Jan. 03, 2015	$ 414,501	$ 44,166	$ 867	$ 374,929	$ (5,375)	$ (86)
Comprehensive income:
Net income (loss)	32,329			32,357		(28)
Other comprehensive (loss) (net of tax)	715				715
Change in ownership of noncontrolling interest				(462)		462
Cash dividends	(22,893)			(22,893)
Common shares – treasury:
Shares purchased	(15,202)	(305)	(14,897)
Shares issued under Members’ Stock Purchase Plan and stock awards	25,686	489	25,197
Balance at ending of period at Jul. 04, 2015	435,136	44,350	11,167	383,931	(4,660)	348
Balance beginning of period at Jan. 02, 2016	477,299	44,158	4,407	433,575	(5,186)	345
Comprehensive income:
Net income (loss)	40,869			40,872		(3)
Other comprehensive (loss) (net of tax)	(2,078)				(2,078)
Cash dividends	(23,984)			(23,984)
Common shares – treasury:
Shares purchased	(8,745)	(208)	(8,537)
Shares issued under Members’ Stock Purchase Plan and stock awards	22,525	505	22,020
Balance at ending of period at Jul. 02, 2016	$ 505,886	$ 44,455	$ 17,890	$ 450,463	$ (7,264)	$ 342