Segment Information (Schedule of Segment Reporting Additional Information by Segment) (Details) - USD ($) $ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Assets | $ 1,076,600 | $ 980,869 |
| Standard Commercial Segment [Member] | ||
| Assets | 156,722 | 145,355 |
| Specialty Commercial Segment [Member] | ||
| Assets | 660,263 | 590,852 |
| Personal Segment [Member] | ||
| Assets | 239,632 | 222,183 |
| Corporate [Member] | ||
| Assets | 19,983 | 22,479 |
| Parent Company [Member] | ||
| Assets | $ 375,213 | $ 342,255 |