Segment Information (Schedule of Business Segment Information) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenues [Abstract]
Revenues	$ 97,618	$ 93,684	$ 278,698	$ 282,331
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	7,176	9,835	14,652	26,799
Specialty Commercial Segment [Member]
Revenues [Abstract]
Revenues	65,855	63,395	189,478	188,070
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	8,245	11,291	25,843	28,739
Standard Commercial Segment [Member]
Revenues [Abstract]
Revenues	18,253	18,477	54,464	58,941
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	3,195	2,893	7,623	7,247
Personal Segment [Member]
Revenues [Abstract]
Revenues	12,759	12,716	36,996	33,096
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	(1,750)	(224)	(3,847)	(596)
Corporate [Member]
Revenues [Abstract]
Revenues	751	(904)	(2,240)	2,224
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	$ (2,514)	$ (4,125)	$ (14,967)	$ (8,591)