Segment Information (Details 1) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Total assets	$ 783,344	$ 746,059
Standard Commercial Segment [Member]
Total assets	148,750	144,673
Specialty Commercial Segment [Member]
Total assets	384,744	348,699
Personal Segment [Member]
Total assets	228,262	232,381
Corporate [Member]
Total assets	$ 21,588	$ 20,306