STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Operating revenue
Total operating revenue	$ 999,886	$ 858,938	$ 2,871,025	$ 2,451,273
Operating expenses
Total operating expenses	819,761	710,467	2,361,880	2,058,101
Operating income	180,125	148,471	509,145	393,172
Investment income
Net investment income	17,322	14,642	49,235	30,360
Net realized and unrealized investment gains (losses)	2,925	(2,227)	2,983	(9,246)
Net impairment losses recognized in earnings	(698)	(113)	(3,763)	(1,917)
Total investment income	19,549	12,302	48,455	19,197
Other income	1,168	3,001	7,871	9,643
Income before income taxes	200,842	163,774	565,471	422,012
Income tax expense	41,012	32,734	117,186	86,879
Net income	$ 159,830	$ 131,040	$ 448,285	$ 335,133
Class A common stock
Earnings per share - Basic and diluted:
Common stock - basic (in dollars per share)	$ 3.43	$ 2.81	$ 9.63	$ 7.20
Common stock - diluted (in dollars per share)	$ 3.06	$ 2.51	$ 8.57	$ 6.41
Weighted average shares outstanding – Basic
Common stock - basic (in shares)	46,189,059	46,189,037	46,189,038	46,188,962
Weighted average shares outstanding – Diluted
Common stock - diluted (in shares)	52,306,514	52,299,369	52,301,001	52,298,655
Dividends declared per share
Dividends declared (in dollars per share)	$ 1.275	$ 1.19	$ 3.825	$ 3.57
Class B common stock
Earnings per share - Basic and diluted:
Common stock - basic (in dollars per share)	515	422	1,444	1,079
Common stock - diluted (in dollars per share)	$ 515	$ 422	$ 1,444	$ 1,079
Weighted average shares outstanding – Basic
Common stock - basic (in shares)	2,542	2,542	2,542	2,542
Weighted average shares outstanding – Diluted
Common stock - diluted (in shares)	2,542	2,542	2,542	2,542
Dividends declared per share
Dividends declared (in dollars per share)	$ 191.25	$ 178.50	$ 573.75	$ 535.50
Management fee revenue - policy issuance and renewal services
Operating revenue
Total operating revenue	$ 769,162	$ 649,049	$ 2,195,734	$ 1,840,478
Operating expenses
Total operating expenses	613,007	523,349	1,757,531	1,513,690
Management fee revenue - administrative services
Operating revenue
Total operating revenue	17,154	16,151	51,139	46,976
Administrative services reimbursement revenue
Operating revenue
Total operating revenue	206,754	187,118	604,349	544,411
Operating expenses
Total operating expenses	206,754	187,118	604,349	544,411
Service agreement revenue
Operating revenue
Total operating revenue	$ 6,816	$ 6,620	$ 19,803	$ 19,408