Segment Information (Schedule of Additional Business Segment Information) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Assets	$ 1,041,942	$ 980,869
Standard Commercial Segment [Member]
Segment Reporting Information [Line Items]
Assets	151,800	145,355
Specialty Commercial Segment [Member]
Segment Reporting Information [Line Items]
Assets	634,625	590,852
Personal Segment [Member]
Segment Reporting Information [Line Items]
Assets	235,612	222,183
Corporate [Member]
Segment Reporting Information [Line Items]
Assets	$ 19,905	$ 22,479