STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Operating revenue
Total operating revenue	$ 741,236	$ 687,839	$ 2,139,489	$ 1,998,046
Operating expenses
Total operating expenses	634,764	592,736	1,844,705	1,741,783
Operating income	106,472	95,103	294,784	256,263
Investment income
Net investment income	5,834	18,858	24,606	49,605
Net realized and unrealized investment (losses) gains	(6,230)	1,610	(23,833)	5,183
Net impairment (losses) recoveries recognized in earnings	(175)	130	(429)	216
Total investment (loss) income	(571)	20,598	344	55,004
Interest expense	115	1,034	2,009	3,082
Other income (expense)	562	(541)	1,372	(1,608)
Income before income taxes	106,348	114,126	294,491	306,577
Income tax expense	22,035	23,903	61,412	63,759
Net income	$ 84,313	$ 90,223	$ 233,079	$ 242,818
Class A common stock
Earnings per share - Basic and diluted:
Common stock - basic (in dollars per share)	$ 1.81	$ 1.94	$ 5.00	$ 5.21
Common stock - diluted (in dollars per share)	$ 1.61	$ 1.72	$ 4.46	$ 4.64
Weighted average shares outstanding – Basic
Common stock - basic (in shares)	46,189,025	46,189,035	46,188,878	46,188,729
Weighted average shares outstanding – Diluted
Common stock - diluted (in shares)	52,296,411	52,305,245	52,297,685	52,307,859
Dividends declared per share
Dividends declared (in dollars per share)	$ 1.11	$ 1.035	$ 3.33	$ 3.105
Class B common stock
Earnings per share - Basic and diluted:
Common stock - basic (in dollars per share)	272	291	751	782
Common stock - diluted (in dollars per share)	$ 272	$ 291	$ 751	$ 782
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)	$ 166.50	$ 155.25	$ 499.50	$ 465.75
Management fee revenue - policy issuance and renewal services
Operating revenue
Total operating revenue	$ 551,666	$ 504,891	$ 1,584,213	$ 1,462,880
Operating expenses
Total operating expenses	466,111	430,326	1,352,050	1,268,650
Management fee revenue - administrative services
Operating revenue
Total operating revenue	14,657	14,471	43,446	43,985
Administrative services reimbursement revenue
Operating revenue
Total operating revenue	168,653	162,410	492,655	473,133
Operating expenses
Total operating expenses	168,653	162,410	492,655	473,133
Service agreement revenue
Operating revenue
Total operating revenue	$ 6,260	$ 6,067	$ 19,175	$ 18,048