Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Class A common stock
Income available to stockholders (Basic EPS:)
Allocated net income (numerator)	$ 85,535	$ 68,057
Weighted shares (denominator) (in shares)	46,188,819	46,188,761
Per-share amount (in dollars per share)	$ 1.85	$ 1.47
Dilutive effect of stock-based awards
Allocated net income (numerator)	$ 0	$ 0
Weighted shares (denominator) (in shares)	7,002	10,940
Assumed conversion of Class B shares
Allocated net income (numerator)	$ 706	$ 562
Weighted shares (denominator) (in shares)	6,100,800	6,100,800
Income available to stockholders on equivalent shares (Diluted EPS:)
Allocated net income (numerator)	$ 86,241	$ 68,619
Weighted shares (denominator) (in shares)	52,296,621	52,300,501
Per-share amount (in dollars per share)	$ 1.65	$ 1.31
Class B common stock
Income available to stockholders (Basic EPS:)
Allocated net income (numerator)	$ 706	$ 562
Weighted shares (denominator) (in shares)	2,542	2,542
Per-share amount (in dollars per share)	$ 278	$ 221
Income available to stockholders on equivalent shares (Diluted EPS:)
Allocated net income (numerator)	$ 706	$ 562
Weighted shares (denominator) (in shares)	2,542	2,542
Per-share amount (in dollars per share)	$ 278	$ 221