Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues
Gross premiums written	$ 93,702	$ 87,039	$ 191,044	$ 182,117
Ceded premiums written	(2,369)	(2,198)	(4,699)	(4,589)
Net premiums written	91,333	84,841	186,345	177,528
Net premiums earned	88,995	82,749	176,305	173,661
Net investment income	7,303	7,471	14,512	14,181
Net realized losses on investments	(1,111)	(388)	(1,142)	(569)
Net unrealized gains (losses) on equity securities	76		(314)
Fee and other income	117	93	194	194
Total revenues	95,380	89,925	189,555	187,467
Expenses
Loss and loss adjustment expenses incurred	52,076	46,428	105,238	102,644
Underwriting and certain other operating costs	7,985	7,645	15,831	16,145
Commissions	6,616	5,984	13,110	12,394
Salaries and benefits	6,681	6,554	12,607	12,866
Policyholder dividends	1,092	1,163	2,425	2,534
Total expenses	74,450	67,774	149,211	146,583
Income before income taxes	20,930	22,151	40,344	40,884
Income tax expense	3,974	6,670	7,219	11,879
Net income	$ 16,956	$ 15,481	$ 33,125	$ 29,005
Earnings per share
Basic	$ 0.88	$ 0.81	$ 1.73	$ 1.51
Diluted	$ 0.88	$ 0.81	$ 1.72	$ 1.51
Shares used in computing earnings per share
Basic	19,208,601	19,162,049	19,197,925	19,156,250
Diluted	19,266,735	19,227,960	19,275,883	19,227,997
Cash dividends declared per common share	$ 0.22	$ 0.20	$ 0.44	$ 0.40