Loans (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Summary shows the composition of the loan portfolio
Total	$ 1,111,788	$ 984,492
Construction and Land Development [Member]
Summary shows the composition of the loan portfolio
Total	38,618	56,819
Commercial and Industrial [Member]
Summary shows the composition of the loan portfolio
Total	88,475	82,404
Commercial Real Estate [Member]
Summary shows the composition of the loan portfolio
Total	576,465	487,495
Residential Real Estate [Member]
Summary shows the composition of the loan portfolio
Total	281,857	239,307
Consumer [Member]
Summary shows the composition of the loan portfolio
Total	6,823	6,197
Home Equity [Member]
Summary shows the composition of the loan portfolio
Total	118,923	110,786
Overdrafts [Member]
Summary shows the composition of the loan portfolio
Total	$ 627	$ 1,484