Statutory (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statutory [Abstract]
Net income (loss) of the insurance subsidiaries in accordance with statutory accounting practices	$ 31,647	$ 25,627	$ 27,143
Consolidated statutory capital and surplus for subsidiaries	399,314	$ 390,823
Amount of statutory surplus transferred by dividend or loan to the parent company	64,260
Minimum statutory surplus necessary for the insurance subsidiaries to satisfy statutory risk based capital requirements	85,842
Consolidated statutory capital and surplus exceeded requirement	$ 313,473