Segment Information (Schedule of Business Segment Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues:
Revenues	$ 108,613	$ 85,620	$ 301,053	$ 253,177
Pre-tax income (loss), net of non-controlling interest:
Pre-tax income, net of non-controlling interest	9,472	4,763	6,318	763
Standard Commercial Segment [Member]
Revenues:
Revenues	21,163	17,761	62,160	53,791
Pre-tax income (loss), net of non-controlling interest:
Pre-tax income, net of non-controlling interest	1,163	(529)	641	(2,601)
Specialty Commercial Segment [Member]
Revenues:
Revenues	60,787	46,373	168,127	129,812
Pre-tax income (loss), net of non-controlling interest:
Pre-tax income, net of non-controlling interest	7,564	8,287	11,828	17,193
Personal Segment [Member]
Revenues:
Revenues	21,256	21,172	64,621	68,508
Pre-tax income (loss), net of non-controlling interest:
Pre-tax income, net of non-controlling interest	(1,613)	(345)	(3,331)	(5,747)
Corporate [Member]
Revenues:
Revenues	5,407	314	6,145	1,066
Pre-tax income (loss), net of non-controlling interest:
Pre-tax income, net of non-controlling interest	$ 2,358	$ (2,650)	$ (2,820)	$ (8,082)