Segment Information (Schedule of Additional Business Segment Information) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Assets	$ 992,179	$ 909,023
Standard Commercial Segment [Member]
Segment Reporting Information [Line Items]
Assets	146,411	142,143
Specialty Commercial Segment [Member]
Segment Reporting Information [Line Items]
Assets	603,324	536,894
Personal Segment [Member]
Segment Reporting Information [Line Items]
Assets	222,790	210,825
Corporate [Member]
Segment Reporting Information [Line Items]
Assets	$ 19,654	$ 19,161