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, 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	93,390						93,390
Other comprehensive income, net of tax	815									815
Cash dividends paid: Common Stock and Class B Common Stock		$ (1,786)	$ (558)					$ (1,786)	$ (558)
Conversion of 1,227,546 shares of Class B Common Stock	0			1,227	(1,227)
Ending Balance at Apr. 01, 2022	803,647			11,431	1,633	135,953	815,532			(99,648)	(60,845)	(409)
Beginning Balance at Dec. 31, 2022	1,115,388			11,431	1,633	135,953	1,112,462			(84,837)	(60,845)	(409)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	118,127						118,127
Other comprehensive income, net of tax	738									738
Ending Balance at Mar. 31, 2023	$ 1,234,253			$ 11,431	$ 1,633	$ 135,953	$ 1,230,589			$ (84,099)	$ (60,845)	$ (409)