Condensed Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenues
Gross premiums written	$ 100,789	$ 105,703
Ceded premiums written	(2,536)	(3,339)
Net premiums written	98,253	102,364
Net premiums earned	94,787	89,233
Net investment income	6,833	6,708
Net realized gains on investments	59	101
Fee and other income	109	131
Total revenues	101,788	96,173
Expenses
Loss and loss adjustment expenses incurred	60,006	61,285
Underwriting and certain other operating costs	7,472	7,963
Commissions	7,005	6,687
Salaries and benefits	5,893	6,721
Policyholder dividends	215	113
Total expenses	80,591	82,769
Income before income taxes	21,197	13,404
Income tax expense	6,067	2,855
Net income	15,130	10,549
Net income available to common shareholders	$ 15,130	$ 10,549
Earnings per share
Basic	$ 0.80	$ 0.57
Diluted	$ 0.79	$ 0.56
Shares used in computing earnings per share
Basic	18,847,792	18,531,926
Diluted	19,047,479	18,884,929
Extraordinary cash dividends declared per common share		$ 0.50
Cash dividends declared per common share	$ 0.15	$ 0.12