STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operating revenue
Total operating revenue	$ 839,870	$ 726,143	$ 1,592,335	$ 1,398,253
Operating expenses
Total operating expenses	705,712	622,143	1,347,634	1,209,941
Operating income	134,158	104,000	244,701	188,312
Investment income
Net investment income	13,535	8,268	15,718	18,772
Net realized and unrealized investment losses	(1,737)	(10,324)	(7,019)	(17,603)
Net impairment losses recognized in earnings	(171)	(38)	(1,804)	(254)
Total investment income (loss)	11,627	(2,094)	6,895	915
Interest expense	0	895	0	1,894
Other income	3,305	337	6,642	810
Income before income taxes	149,090	101,348	258,238	188,143
Income tax expense	31,238	21,201	54,145	39,377
Net income	$ 117,852	$ 80,147	$ 204,093	$ 148,766
Class A common stock
Earnings per share - Basic and diluted:
Common stock - basic (in dollars per share)	$ 2.53	$ 1.72	$ 4.38	$ 3.19
Common stock - diluted (in dollars per share)	$ 2.25	$ 1.53	$ 3.90	$ 2.84
Weighted average shares outstanding – Basic
Common stock - basic (in shares)	46,189,026	46,188,845	46,188,923	46,188,803
Weighted average shares outstanding – Diluted
Common stock - diluted (in shares)	52,299,974	52,296,139	52,298,298	52,298,321
Dividends declared per share
Dividends declared (in dollars per share)	$ 1.19	$ 1.11	$ 2.38	$ 2.22
Class B common stock
Earnings per share - Basic and diluted:
Common stock - basic (in dollars per share)	380	258	657	479
Common stock - diluted (in dollars per share)	$ 380	$ 258	$ 657	$ 479
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)	$ 178.50	$ 166.50	$ 357.00	$ 333.00
Management fee revenue - policy issuance and renewal services
Operating revenue
Total operating revenue	$ 633,339	$ 544,555	$ 1,191,429	$ 1,032,547
Operating expenses
Total operating expenses	521,246	461,468	990,341	885,939
Management fee revenue - administrative services
Operating revenue
Total operating revenue	15,636	14,476	30,825	28,789
Administrative services reimbursement revenue
Operating revenue
Total operating revenue	184,466	160,675	357,293	324,002
Operating expenses
Total operating expenses	184,466	160,675	357,293	324,002
Service agreement revenue
Operating revenue
Total operating revenue	$ 6,429	$ 6,437	$ 12,788	$ 12,915