CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive (Loss)/Income	Non- controlling Interest
Beginning Balance at Dec. 28, 2013	$ 436,417	$ 44,982	$ 16,729	$ 373,652	$ 965	$ 89
Comprehensive income:
Net income (loss)	61,155			61,471		(316)
Other comprehensive income (loss) (net of tax)	(6,340)				(6,340)
Distributions to non-controlling interest	(5)					(5)
Change in ownership of non-controlling interest	0			(146)		146
Cash dividends	(44,328)			(44,328)
Common shares – treasury:
Shares purchased	(67,908)	(1,666)	(50,522)	(15,720)
Shares issued under Members’ Stock Purchase Plan and stock awards (net of tax)	35,510	850	34,660
Ending Balance at Jan. 03, 2015	414,501	44,166	867	374,929	(5,375)	(86)
Comprehensive income:
Net income (loss)	105,406			105,436		(30)
Other comprehensive income (loss) (net of tax)	189				189
Distributions to non-controlling interest	0					0
Change in ownership of non-controlling interest	0			(461)		461
Cash dividends	(46,329)			(46,329)
Common shares – treasury:
Shares purchased	(26,657)	(550)	(26,107)
Shares issued under Members’ Stock Purchase Plan and stock awards (net of tax)	30,189	542	29,647
Ending Balance at Jan. 02, 2016	477,299	44,158	4,407	433,575	(5,186)	345
Comprehensive income:
Net income (loss)	85,638			85,577		61
Other comprehensive income (loss) (net of tax)	186				186
Distributions to non-controlling interest	0					0
Change in ownership of non-controlling interest	(89)			(89)		0
Cash dividends	(48,495)			(48,495)
Common shares – treasury:
Shares purchased	(55,825)	(1,082)	(45,699)	(9,044)
Shares issued under Members’ Stock Purchase Plan and stock awards (net of tax)	42,295	1,003	41,292
Ending Balance at Dec. 31, 2016	$ 501,009	$ 44,079	$ 0	$ 461,524	$ (5,000)	$ 406