Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Dividend Declared	Dividend Paid	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-in Capital	Retained Earnings	Retained Earnings Dividend Declared	Retained Earnings Dividend Paid	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Income (Loss)	Non-controlling Interest
Beginning Balance at Dec. 29, 2018	$ 563,259				$ 43,582	$ 18,041	$ 504,909				$ (3,599)	$ 326
Comprehensive income:
Net income (loss)	110,503						110,505					(2)
Other comprehensive income (loss), net of tax	(3,735)										(3,735)
Reclassification of Stranded Tax Effects (ASU 2018-02)	0						739				(739)
Other comprehensive income (loss), net of tax	$ (4,474)
Accounting Standards Update [Extensible List]	Accounting Standards Update 2016-13 [Member]
Dividends			$ (52,232)						$ (52,232)
Common shares – treasury:
Shares purchased	$ (83,907)				(2,286)	(44,424)	(37,197)
Shares issued under Members' Stock Purchase Plan and stock awards, net of tax	47,481				1,299	46,182
Ending Balance at Dec. 28, 2019	584,368			$ 2,999	42,595	19,799	529,723			$ 2,999	(8,073)	324
Comprehensive income:
Net income (loss)	41,919						41,917					2
Other comprehensive income (loss), net of tax	(1,080)										(1,080)
Dividends		$ (231)	(52,096)					$ (231)	(52,096)
Common shares – treasury:
Shares purchased	(6,390)				(214)	(4,988)	(1,188)
Shares issued under Members' Stock Purchase Plan and stock awards, net of tax	24,386				538	23,848
Ending Balance at Jan. 02, 2021	590,745			$ (131)	42,919	38,659	517,994			$ (131)	(9,153)	326
Comprehensive income:
Net income (loss)	59,811						59,814					(3)
Other comprehensive income (loss), net of tax	2,378										2,378
Dividends		$ (1,001)	$ (53,689)					$ (1,001)	$ (53,689)
Common shares – treasury:
Shares purchased	(60,436)				(1,515)	(50,448)	(8,473)
Shares issued under Members' Stock Purchase Plan and stock awards, net of tax	52,159				1,178	50,981
Ending Balance at Jan. 01, 2022	$ 589,967				$ 42,582	$ 39,192	$ 514,645				$ (6,775)	$ 323