Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Consolidated Balance Sheets
Fixed maturity securities, amortized cost	$ 1,155,466	$ 1,142,663
Equity securities, at cost	$ 87,580	$ 92,326
Common stock par value (in dollars per share)	$ 0.01	$ 0.01
Common stock shares authorized	30,000,000	30,000,000
Common stock shares issued	17,499,544	17,430,189
Treasury stock shares	2,279,570	2,279,570