Segment Information (Schedule of Business Segment Information) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenues [Abstract]
Revenues	$ 93,684	$ 81,417	$ 282,331	$ 249,362
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	9,835	4,728	26,799	13,182
Standard Commercial Segment [Member]
Revenues [Abstract]
Revenues	18,477	20,985	58,941	60,667
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	2,893	2,244	7,247	318
Specialty Commercial Segment [Member]
Revenues [Abstract]
Revenues	63,395	57,983	188,070	179,167
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	11,291	7,653	28,739	27,042
Personal Segment [Member]
Revenues [Abstract]
Revenues	12,716	4,225	33,096	14,699
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	(224)	662	(596)	1,916
Corporate [Member]
Revenues [Abstract]
Revenues	(904)	(1,776)	2,224	(5,171)
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	$ (4,125)	$ (5,831)	$ (8,591)	$ (16,094)