Net Income Per Share - Schedule of Computation of Basic Net Income Per Share and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Numerator for basic and diluted net income per Common Stock and Class B Common Stock share:
Net income	$ 570,582	$ 633,125	$ 408,375
Less dividends:
Total undistributed earnings – basic	483,909	447,490	361,507
Total undistributed earnings – diluted	483,909	447,490	361,507
Common Stock
Less dividends:
Common Stock	76,625	165,541	41,844
Total undistributed earnings – basic	425,826	397,753	322,760
Total undistributed earnings – diluted	425,308	397,187	322,120
Numerator for basic net income per Common Stock share:
Numerator for basic net income per Common Stock share	502,451	563,294	364,604
Numerator for diluted net income per Common Stock share:
Numerator for diluted net income per Common Stock share	$ 570,582	$ 633,125	$ 408,375
Denominator for basic net income per Common Stock and Class B Common Stock share:
Common Stock weighted average shares outstanding - basic (in shares)	73,658	80,348	83,690
Denominator for diluted net income per Common Stock and Class B Common Stock share:
Common Stock weighted average shares outstanding - diluted (in shares)	83,807	90,524	93,923
Basic net income per share:
Common Stock (in dollars per share)	$ 6.82	$ 7.01	$ 4.36
Diluted net income per share:
Common Stock (in dollars per share)	$ 6.81	$ 6.99	$ 4.35
Class B Common Stock
Less dividends:
Common Stock	$ 10,048	$ 20,094	$ 5,024
Total undistributed earnings – basic	58,083	49,737	38,747
Total undistributed earnings – diluted	58,601	50,303	39,387
Numerator for basic net income per Common Stock share:
Numerator for basic net income per Common Stock share	68,131	69,831	43,771
Numerator for diluted net income per Common Stock share:
Numerator for diluted net income per Common Stock share	$ 68,649	$ 70,397	$ 44,411
Denominator for basic net income per Common Stock and Class B Common Stock share:
Common Stock weighted average shares outstanding - basic (in shares)	10,047	10,047	10,047
Denominator for diluted net income per Common Stock and Class B Common Stock share:
Common Stock weighted average shares outstanding - diluted (in shares)	10,149	10,176	10,233
Basic net income per share:
Common Stock (in dollars per share)	$ 6.78	$ 6.95	$ 4.36
Diluted net income per share:
Common Stock (in dollars per share)	$ 6.76	$ 6.92	$ 4.34