Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock at Cost	Accumulated Other Comprehensive Loss
Beginning Balance (in shares) at Dec. 26, 2020		68,183,702			29,797,639
Beginning Balance at Dec. 26, 2020	$ 691,835	$ 682	$ 228,875	$ 2,046,238	$ (1,581,961)	$ (1,999)
Net income	77,240			77,240
Dividends	(8,067)			(8,067)
Issuance of stock related to stock-based compensation plans (in shares)		28,594			6,087
Issuance of stock related to stock-based compensation plans	(1,164)		(307)		$ (857)
Stock-based compensation	4,029		4,029
Other comprehensive loss	(954)					(954)
Ending Balance (in shares) at Mar. 27, 2021		68,212,296			29,803,726
Ending Balance at Mar. 27, 2021	762,919	$ 682	232,597	2,115,411	$ (1,582,818)	(2,953)
Beginning Balance (in shares) at Dec. 25, 2021		68,232,975			30,539,235
Beginning Balance at Dec. 25, 2021	862,010	$ 682	255,148	2,317,184	$ (1,705,601)	(5,403)
Net income	124,839			124,839
Dividends	(9,324)			(9,324)
Purchases of common stock (in shares)					693,550
Purchases of common stock	(109,332)				$ (109,332)
Issuance of stock related to stock-based compensation plans (in shares)		137,176			10,033
Issuance of stock related to stock-based compensation plans	(10,127)	$ 2	(8,913)		$ (1,216)
Stock-based compensation	1,995		1,995
Other comprehensive loss	(3,912)					(3,912)
Ending Balance (in shares) at Mar. 26, 2022		68,370,151			31,242,818
Ending Balance at Mar. 26, 2022	$ 856,149	$ 684	$ 248,230	$ 2,432,699	$ (1,816,149)	$ (9,315)