Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Condensed Consolidated Balance Sheets [Abstract]
Fixed maturity securities, fair value	$ 614,348	$ 627,349
Fixed maturity securities, cost	176,376	144,514
Equity securities, cost	$ 15,336	$ 7,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	19,637,617	19,513,476
Common stock, shares outstanding	18,379,367	18,255,226
Treasury stock, at cost	1,258,250	1,258,250