Segment Information (Schedule of Business Segment Information) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues [Abstract]
Revenues	$ 93,475	$ 91,052	$ 190,423	$ 181,080
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	(4,918)	1,487	920	7,476
Specialty Commercial Segment [Member]
Revenues [Abstract]
Revenues	69,501	63,040	135,336	123,623
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	3,632	7,287	11,730	17,599
Standard Commercial Segment [Member]
Revenues [Abstract]
Revenues	17,322	18,219	35,048	36,211
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	(199)	3,011	652	4,427
Personal Segment [Member]
Revenues [Abstract]
Revenues	10,684	12,147	22,547	24,237
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	(892)	(1,014)	(1,650)	(2,097)
Corporate [Member]
Revenues [Abstract]
Revenues	(4,032)	(2,354)	(2,508)	(2,991)
Pre-tax income (loss) [Abstract]
Pre-tax income (loss)	$ (7,459)	$ (7,797)	$ (9,812)	$ (12,453)