Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues
Net premiums earned	$ 271,698	$ 275,993	$ 304,427
Net investment income	27,223	25,435	29,364
Net realized gains on investments	3,440	1,695	1,132
Net unrealized gains (losses) on equity securities	(8,092)	12,315	4,204
Fee and other income	468	496	350
Total revenues	294,737	315,934	339,477
Expenses
Loss and loss adjustment expenses incurred	152,316	160,798	157,226
Underwriting and certain other operating costs	24,039	24,813	20,834
Commissions	21,483	21,284	23,147
Salaries and benefits	26,510	25,954	27,925
Policyholder dividends	2,699	3,715	3,453
Provision for investment related credit loss expense (benefit)	44	(79)	(27)
Total expenses	227,091	236,485	232,558
Income before income taxes	67,646	79,449	106,919
Income tax expense	12,044	13,693	20,317
Net income	$ 55,602	$ 65,756	$ 86,602
Earnings per share
Basic	$ 2.89	$ 3.40	$ 4.49
Diluted	$ 2.88	$ 3.39	$ 4.47
Shares used in computing earnings per share
Basic	19,233,241	19,332,391	19,288,996
Diluted	19,321,717	19,408,619	19,363,809
Extraordinary cash dividends declared per common share	$ 4.00	$ 4.00	$ 3.50
Cash dividends declared per common share	$ 1.24	$ 1.16	$ 1.08