Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock, Common [Member]	Total
Balance, at Dec. 26, 2020	$ 9,949	$ 1,283,737	$ 3,286	$ (150,857)	$ 1,146,115
Balance, shares at Dec. 26, 2020	33,047,807
Balance, treasury shares at Dec. 26, 2020				6,149,364
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		57,727			57,727
Other comprehensive income (loss), net of reclassification adjustments and tax			(580)		(580)
Dividends paid		(16,677)			(16,677)
Balance, at Jun. 26, 2021	$ 9,949	1,324,787	2,706	$ (150,857)	1,186,585
Balance, shares at Jun. 26, 2021	33,047,807
Balance, treasury shares at Jun. 26, 2021				6,149,364
Balance, at Mar. 27, 2021	$ 9,949	1,299,653	2,512	$ (150,857)	1,161,257
Balance, shares at Mar. 27, 2021	33,047,807
Balance, treasury shares at Mar. 27, 2021				6,149,364
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		33,472			33,472
Other comprehensive income (loss), net of reclassification adjustments and tax			195		195
Dividends paid		(8,339)			(8,339)
Balance, at Jun. 26, 2021	$ 9,949	1,324,787	2,706	$ (150,857)	1,186,585
Balance, shares at Jun. 26, 2021	33,047,807
Balance, treasury shares at Jun. 26, 2021				6,149,364
Balance, at Dec. 25, 2021	$ 9,949	1,358,963	1,687	$ (150,857)	$ 1,219,742
Balance, shares at Dec. 25, 2021	33,047,807				26,898,443
Balance, treasury shares at Dec. 25, 2021				6,149,364
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		67,655			$ 67,655
Other comprehensive income (loss), net of reclassification adjustments and tax			(7,120)		(7,120)
Dividends paid		(17,215)			(17,215)
Balance, at Jun. 25, 2022	$ 9,949	1,409,403	(5,433)	$ (150,857)	$ 1,263,062
Balance, shares at Jun. 25, 2022	33,047,807				26,898,443
Balance, treasury shares at Jun. 25, 2022				6,149,364	6,149,364
Balance, at Mar. 26, 2022	$ 9,949	1,381,745	(3,360)	$ (150,857)	$ 1,237,477
Balance, shares at Mar. 26, 2022	33,047,807
Balance, treasury shares at Mar. 26, 2022				6,149,364
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		36,266			36,266
Other comprehensive income (loss), net of reclassification adjustments and tax			(2,073)		(2,073)
Dividends paid		(8,608)			(8,608)
Balance, at Jun. 25, 2022	$ 9,949	$ 1,409,403	$ (5,433)	$ (150,857)	$ 1,263,062
Balance, shares at Jun. 25, 2022	33,047,807				26,898,443
Balance, treasury shares at Jun. 25, 2022				6,149,364	6,149,364