Statutory (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statutory [Abstract]
Net income (loss) of the insurance subsidiaries in accordance with statutory accounting practices	$ 27,143	$ 30,886	$ 29,262
Consolidated statutory capital and surplus for subsidiaries	398,762	377,209
Amount of statutory surplus transferred by dividend or loan to the parent company	64,400
Additional shareholders' equity of insurance subsidiaries that could be advanced or loaned to parent company with prior notification and approval from regulatory authorities	238,096
Minimum statutory surplus necessary for the insurance subsidiaries to satisfy statutory risk based capital requirements	94,892
Consolidated statutory capital and surplus exceeded requirement	$ 303,870
Excess statutory capital and surplus to risk based capital (in hundredths)	320.00%