Non-performing Loans and Impaired Loans (Details 2) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Loans transferred and classified as troubled debt restructuring
Number of Defaults	$ 4	$ 2
Unpaid Principal Balance	1,236	410
Commercial [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults
Unpaid Principal Balance
Commercial [Member] | Owner occupied real estate [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults
Unpaid Principal Balance
Commercial [Member] | Non owner occupied real estate [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults
Unpaid Principal Balance
Commercial [Member] | Residential development [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults
Unpaid Principal Balance
Commercial [Member] | Development & Spec Land Loans [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults
Unpaid Principal Balance
Commercial [Member] | Commercial and industrial [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults
Unpaid Principal Balance
Real estate [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults	3	2
Unpaid Principal Balance	239	410
Real estate [Member] | Residential mortgage [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults	3	2
Unpaid Principal Balance	239	410
Real estate [Member] | Residential construction [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults
Unpaid Principal Balance
Real estate [Member] | Mortgage warehouse [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults
Unpaid Principal Balance
Consumer [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults	1
Unpaid Principal Balance	997
Consumer [Member] | Direct Installment [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults
Unpaid Principal Balance
Consumer [Member] | Direct Installment Purchased [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults
Unpaid Principal Balance
Consumer [Member] | Indirect Installment [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults
Unpaid Principal Balance
Consumer [Member] | Home Equity [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults	1
Unpaid Principal Balance	$ 997