CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Class B Common Stock	Common Stock Common Stock	Common Stock Class B Common Stock	Additional Paid-in Capital	Retained Earnings	Retained Earnings Common Stock	Retained Earnings Class B Common Stock	Accumulated Other Comprehensive Loss	Treasury Stock, Common Common Stock	Treasury Stock, Common Class B Common Stock
Beginning Balance at Dec. 31, 2020	$ 512,990			$ 10,204	$ 2,860	$ 135,953	$ 544,280			$ (119,053)	$ (60,845)	$ (409)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	170,473						170,473
Other comprehensive income, net of tax	3,707									3,707
Cash dividends paid: Common Stock and Class B Common Stock		$ (5,356)	$ (1,674)					$ (5,356)	$ (1,674)
Ending Balance at Oct. 01, 2021	680,140			10,204	2,860	135,953	707,723			(115,346)	(60,845)	(409)
Beginning Balance at Jul. 02, 2021	612,502			10,204	2,860	135,953	641,136			(116,397)	(60,845)	(409)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	68,930						68,930
Other comprehensive income, net of tax	1,051									1,051
Cash dividends paid: Common Stock and Class B Common Stock		(1,785)	(558)					(1,785)	(558)
Ending Balance at Oct. 01, 2021	680,140			10,204	2,860	135,953	707,723			(115,346)	(60,845)	(409)
Beginning Balance at Dec. 31, 2021	711,786			10,204	2,860	135,953	724,486			(100,463)	(60,845)	(409)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	311,713						311,713
Other comprehensive income, net of tax	2,444									2,444
Cash dividends paid: Common Stock and Class B Common Stock		(5,970)	(1,060)					(5,970)	(1,060)
Conversion of 1,227,546 shares of Class B Common Stock	0			1,227	(1,227)
Ending Balance at Sep. 30, 2022	1,018,913			11,431	1,633	135,953	1,029,169			(98,019)	(60,845)	(409)
Beginning Balance at Jul. 01, 2022	901,680			11,431	1,633	135,953	912,751			(98,834)	(60,845)	(409)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	118,761						118,761
Other comprehensive income, net of tax	815									815
Cash dividends paid: Common Stock and Class B Common Stock		$ (2,092)	$ (251)					$ (2,092)	$ (251)
Ending Balance at Sep. 30, 2022	$ 1,018,913			$ 11,431	$ 1,633	$ 135,953	$ 1,029,169			$ (98,019)	$ (60,845)	$ (409)