Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock at Cost	Accumulated Other Comprehensive (Loss) Income	Non-controlling Interests
Beginning Balance (in shares) at Dec. 30, 2017		67,740,380			25,749,493
Beginning Balance at Dec. 30, 2017	$ 653,877	$ 677	$ 209,599	$ 1,611,158	$ (1,167,600)	$ (3,162)	$ 3,205
Adoption of accounting standards at Mar. 31, 2018	773			773
Net income (loss)	57,473			57,517			(44)
Dividends	(6,308)			(6,308)
Purchases of common stock (in shares)					14,354
Purchases of common stock	(1,508)				$ (1,508)
Issuance of stock related to stock-based compensation plans (in shares)		95,784			4,822
Issuance of stock related to stock-based compensation plans	(1,725)	$ 1	(1,376)		$ (350)
Stock-based compensation	3,710		3,710
Other comprehensive (loss) income	(12)					(389)	377
Ending Balance (in shares) at Mar. 31, 2018		67,836,164			25,768,669
Ending Balance at Mar. 31, 2018	706,280	$ 678	211,933	1,663,140	$ (1,169,458)	(3,551)	3,538
Beginning Balance (in shares) at Dec. 30, 2017		67,740,380			25,749,493
Beginning Balance at Dec. 30, 2017	653,877	$ 677	209,599	1,611,158	$ (1,167,600)	(3,162)	3,205
Net income (loss)	186,913
Ending Balance (in shares) at Sep. 29, 2018		67,869,378			26,755,001
Ending Balance at Sep. 29, 2018	726,210	$ 679	221,563	1,779,680	$ (1,273,512)	(4,569)	2,369
Beginning Balance (in shares) at Mar. 31, 2018		67,836,164			25,768,669
Beginning Balance at Mar. 31, 2018	706,280	$ 678	211,933	1,663,140	$ (1,169,458)	(3,551)	3,538
Net income (loss)	62,492			62,523			(31)
Dividends	(6,188)			(6,188)
Purchases of common stock (in shares)					985,646
Purchases of common stock	(103,980)				$ (103,980)
Issuance of stock related to stock-based compensation plans (in shares)		11,528			495
Issuance of stock related to stock-based compensation plans	(48)		3		$ (51)
Stock-based compensation	4,392		4,392
Other comprehensive (loss) income	(2,015)					(1,733)	(282)
Ending Balance (in shares) at Jun. 30, 2018		67,847,692			26,754,810
Ending Balance at Jun. 30, 2018	660,933	$ 678	216,328	1,719,475	$ (1,273,489)	(5,284)	3,225
Net income (loss)	66,948			66,985			(37)
Dividends	(6,780)			(6,780)
Transaction with noncontrolling interests			1,078				(1,078)
Issuance of stock related to stock-based compensation plans (in shares)		21,686			191
Issuance of stock related to stock-based compensation plans	(766)	$ 1	(744)		$ (23)
Stock-based compensation	4,901		4,901
Other comprehensive (loss) income	974					715	259
Ending Balance (in shares) at Sep. 29, 2018		67,869,378			26,755,001
Ending Balance at Sep. 29, 2018	726,210	$ 679	221,563	1,779,680	$ (1,273,512)	(4,569)	2,369
Beginning Balance (in shares) at Dec. 29, 2018		67,870,962			27,755,001
Beginning Balance at Dec. 29, 2018	689,133	$ 679	226,852	1,841,279	$ (1,376,111)	(5,875)	2,309
Net income (loss)	63,300			63,317			(17)
Dividends	(6,629)			(6,629)
Purchases of common stock (in shares)					124,481
Purchases of common stock	(12,977)				$ (12,977)
Purchase of noncontrolling interests	(600)		1,842				(2,442)
Issuance of stock related to stock-based compensation plans (in shares)		176,079			5,199
Issuance of stock related to stock-based compensation plans	(7,604)	$ 1	(7,081)		$ (524)
Stock-based compensation	1,938		1,938
Other comprehensive (loss) income	1,699					1,549	150
Ending Balance (in shares) at Mar. 30, 2019		68,047,041			27,884,681
Ending Balance at Mar. 30, 2019	728,260	$ 680	223,551	1,897,967	$ (1,389,612)	(4,326)
Beginning Balance (in shares) at Dec. 29, 2018		67,870,962			27,755,001
Beginning Balance at Dec. 29, 2018	689,133	$ 679	226,852	1,841,279	$ (1,376,111)	(5,875)	$ 2,309
Net income (loss)	177,655
Ending Balance (in shares) at Sep. 28, 2019		68,072,834			28,609,926
Ending Balance at Sep. 28, 2019	755,975	$ 681	225,937	1,998,362	$ (1,465,284)	(3,721)
Beginning Balance (in shares) at Mar. 30, 2019		68,047,041			27,884,681
Beginning Balance at Mar. 30, 2019	728,260	$ 680	223,551	1,897,967	$ (1,389,612)	(4,326)
Net income (loss)	61,100			61,100
Dividends	(6,628)			(6,628)
Purchases of common stock (in shares)					549,929
Purchases of common stock	(56,752)				$ (56,752)
Issuance of stock related to stock-based compensation plans (in shares)		17,836			572
Issuance of stock related to stock-based compensation plans	(491)	$ 1	(431)		$ (61)
Stock-based compensation	1,430		1,430
Other comprehensive (loss) income	1,381					1,381
Ending Balance (in shares) at Jun. 29, 2019		68,064,877			28,435,182
Ending Balance at Jun. 29, 2019	728,300	$ 681	224,550	1,952,439	$ (1,446,425)	(2,945)
Net income (loss)	53,255			53,255
Dividends	(7,332)			(7,332)
Purchases of common stock (in shares)					174,658
Purchases of common stock	(18,849)				$ (18,849)
Issuance of stock related to stock-based compensation plans (in shares)		7,957			86
Issuance of stock related to stock-based compensation plans	275		285		$ (10)
Stock-based compensation	1,102		1,102
Other comprehensive (loss) income	(776)					(776)
Ending Balance (in shares) at Sep. 28, 2019		68,072,834			28,609,926
Ending Balance at Sep. 28, 2019	$ 755,975	$ 681	$ 225,937	$ 1,998,362	$ (1,465,284)	$ (3,721)