Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Total
Beginning balance at Dec. 29, 2018	$ 656	$ 116,339	$ (23,502)	$ 806,556	$ 900,049
Balance (in shares) at Dec. 29, 2018	65,638,701
Increase (Decrease) in Stockholders' Equity
Foreign currency translation			1,458		1,458
Change in pension benefit (net of of income taxes)			162		162
Net income				16,791	16,791
Share-based compensation		580			580
Issuance of common stock for share-based compensation	$ 1	(906)			(905)
Issuance of common stock for share-based compensation (in shares)	65,928
Repurchase of common stock	$ (4)	(9,996)			(10,000)
Repurchase of common stock (in shares)	(407,022)
Dividends declared on common stock		(31,016)			(31,016)
Ending balance at Mar. 30, 2019	$ 653	75,001	(21,882)	823,347	877,119
Balance (in shares) at Mar. 30, 2019	65,297,607
Beginning balance at Dec. 29, 2018	$ 656	116,339	(23,502)	806,556	900,049
Balance (in shares) at Dec. 29, 2018	65,638,701
Increase (Decrease) in Stockholders' Equity
Foreign currency translation					3,001
Change in pension benefit (net of of income taxes)					325
Net income					35,042
Ending balance at Jun. 29, 2019	$ 654	46,284	(20,176)	841,598	868,360
Balance (in shares) at Jun. 29, 2019	65,375,514
Beginning balance at Mar. 30, 2019	$ 653	75,001	(21,882)	823,347	877,119
Balance (in shares) at Mar. 30, 2019	65,297,607
Increase (Decrease) in Stockholders' Equity
Foreign currency translation			1,543		1,543
Change in pension benefit (net of of income taxes)			163		163
Net income				18,251	18,251
Share-based compensation		2,336			2,336
Issuance of common stock for share-based compensation	$ 1				$ 1
Issuance of common stock for share-based compensation (in shares)	77,907
Repurchase of common stock (in shares)					0
Dividends declared on common stock		(31,053)			$ (31,053)
Ending balance at Jun. 29, 2019	$ 654	$ 46,284	(20,176)	841,598	868,360
Balance (in shares) at Jun. 29, 2019	65,375,514
Beginning balance at Dec. 28, 2019	$ 640		(31,894)	843,796	$ 812,542
Balance (in shares) at Dec. 28, 2019	64,044,649				64,044,649
Increase (Decrease) in Stockholders' Equity
Foreign currency translation			(14,349)		$ (14,349)
Change in pension benefit (net of of income taxes)			296		296
Net income				28,092	28,092
Share-based compensation				163	163
Issuance of common stock for share-based compensation	$ 1			(1)
Issuance of common stock for share-based compensation (in shares)	75,848
Dividends declared on common stock				(30,457)	(30,457)
Ending balance at Mar. 28, 2020	$ 641		(45,947)	841,593	796,287
Balance (in shares) at Mar. 28, 2020	64,120,497
Beginning balance at Dec. 28, 2019	$ 640		(31,894)	843,796	$ 812,542
Balance (in shares) at Dec. 28, 2019	64,044,649				64,044,649
Increase (Decrease) in Stockholders' Equity
Foreign currency translation					$ (12,678)
Change in pension benefit (net of of income taxes)					515
Net income					$ 73,003
Repurchase of common stock (in shares)					0
Ending balance at Jun. 27, 2020	$ 642		(44,057)	860,564	$ 817,149
Balance (in shares) at Jun. 27, 2020	64,160,453				64,160,453
Beginning balance at Mar. 28, 2020	$ 641		(45,947)	841,593	$ 796,287
Balance (in shares) at Mar. 28, 2020	64,120,497
Increase (Decrease) in Stockholders' Equity
Foreign currency translation			1,671		1,671
Change in pension benefit (net of of income taxes)			219		219
Net income				44,911	44,911
Share-based compensation				4,601	4,601
Issuance of common stock for share-based compensation	$ 1			(65)	(64)
Issuance of common stock for share-based compensation (in shares)	39,956
Dividends declared on common stock				(30,476)	(30,476)
Ending balance at Jun. 27, 2020	$ 642		$ (44,057)	$ 860,564	$ 817,149
Balance (in shares) at Jun. 27, 2020	64,160,453				64,160,453