Segment Information (Schedule of Additional Business Segment Information) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Assets	$ 987,538	$ 909,023
Standard Commercial Segment [Member]
Segment Reporting Information [Line Items]
Assets	145,690	142,143
Specialty Commercial Segment [Member]
Segment Reporting Information [Line Items]
Assets	589,957	536,894
Personal Segment [Member]
Segment Reporting Information [Line Items]
Assets	228,764	210,825
Corporate [Member]
Segment Reporting Information [Line Items]
Assets	$ 23,127	$ 19,161