Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock Common Class A	Common Stock Common Class B	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment
Balance at Dec. 26, 2020	$ 956,967		$ 100	$ 22	$ 599,737	$ (252)	$ 357,360
Balance (ASU 2019-12) at Dec. 26, 2020		$ (55)						$ (55)
Balance (in shares) at Dec. 26, 2020			10,005,000	2,178,000
Net Income (Loss)	14,553						14,553
Stock options exercised and restricted shares activities	(6,729)		$ 1		(6,730)
Stock options exercised and restricted shares activities (in shares)			69,000
Stock-based compensation expense	18,615				18,615
Conversion from Class B to Class A			$ 1	$ (1)
Conversion from Class B to Class A (in shares)			110,000	(110,000)
Defined benefit plans liability adjustment, net of tax	90					90
Foreign currency translation adjustment	(32)					(32)
Balance at Dec. 25, 2021	983,409		$ 102	$ 21	611,622	(194)	371,858
Balance (in shares) at Dec. 25, 2021			10,184,000	2,068,000
Net Income (Loss)	67,263						67,263
Stock options exercised and restricted shares activities	3,905				3,905
Stock options exercised and restricted shares activities (in shares)			54,000
Stock-based compensation expense	13,988				13,988
Defined benefit plans liability adjustment, net of tax	253					253
Foreign currency translation adjustment	(269)					(269)
Balance at Dec. 31, 2022	1,068,549		$ 102	$ 21	629,515	(210)	439,121
Balance (in shares) at Dec. 31, 2022			10,238,000	2,068,000
Net Income (Loss)	76,250						76,250
Repurchase and retirement of Class A Common Stock	(93,805)		$ (2)				(93,803)
Repurchase and retirement of Class A Common Stock (in shares)			(276,000)
Stock options exercised and restricted shares activities	$ 9,811				9,811
Stock options exercised and restricted shares activities (in shares)	50,211		71,000
Stock-based compensation expense	$ 16,971				16,971
Defined benefit plans liability adjustment, net of tax	(13)					(13)
Foreign currency translation adjustment	166					166
Balance at Dec. 30, 2023	$ 1,077,929		$ 100	$ 21	$ 656,297	$ (57)	$ 421,568
Balance (in shares) at Dec. 30, 2023			10,033,000	2,068,000