Segment Information (Schedule of Business Segment Information) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues [Abstract]
Revenues	$ 97,723	$ 97,618	$ 288,146	$ 278,698
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	(1,525)	7,176	(605)	14,652
Specialty Commercial Segment [Member]
Revenues [Abstract]
Revenues	69,721	65,855	205,057	189,478
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	1,288	8,245	13,018	25,843
Standard Commercial Segment [Member]
Revenues [Abstract]
Revenues	17,401	18,253	52,449	54,464
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	229	3,195	881	7,623
Personal Segment [Member]
Revenues [Abstract]
Revenues	9,404	12,759	31,951	36,996
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	(661)	(1,750)	(2,311)	(3,847)
Corporate [Member]
Revenues [Abstract]
Revenues	1,197	751	(1,311)	(2,240)
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	$ (2,381)	$ (2,514)	$ (12,193)	$ (14,967)