Non-performing Loans and Impaired Loans (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Nonaccrual, loans past due over 90 days still on accrual, and troubled debt restructured ("TDR's") by class of loans:
Nonaccrual	$ 13,855	$ 13,374
Loans Past Due Over 90 Days Still Accruing	122	54
Non Performing TDR's	6,586	6,649
Performing TDR's	5,086	3,702
Total Non-Performing Loans	25,649	23,779
Commercial [Member]
Nonaccrual, loans past due over 90 days still on accrual, and troubled debt restructured ("TDR's") by class of loans:
Nonaccrual	5,871	5,754
Loans Past Due Over 90 Days Still Accruing	76
Non Performing TDR's	2,289	3,674
Performing TDR's	1,230	1,265
Total Non-Performing Loans	9,466	10,693
Commercial [Member] | Owner occupied real estate [Member]
Nonaccrual, loans past due over 90 days still on accrual, and troubled debt restructured ("TDR's") by class of loans:
Nonaccrual	451	2,800
Non Performing TDR's	79	1,272
Performing TDR's	784	819
Total Non-Performing Loans	1,314	4,891
Commercial [Member] | Non owner occupied real estate [Member]
Nonaccrual, loans past due over 90 days still on accrual, and troubled debt restructured ("TDR's") by class of loans:
Nonaccrual	2,504	1,705
Loans Past Due Over 90 Days Still Accruing	76
Non Performing TDR's	1,424	1,605
Performing TDR's	446	446
Total Non-Performing Loans	4,450	3,756
Commercial [Member] | Residential development [Member]
Nonaccrual, loans past due over 90 days still on accrual, and troubled debt restructured ("TDR's") by class of loans:
Nonaccrual
Loans Past Due Over 90 Days Still Accruing
Non Performing TDR's
Performing TDR's
Total Non-Performing Loans
Commercial [Member] | Development & Spec Land Loans [Member]
Nonaccrual, loans past due over 90 days still on accrual, and troubled debt restructured ("TDR's") by class of loans:
Nonaccrual	733	705
Total Non-Performing Loans	733	705
Commercial [Member] | Commercial and industrial [Member]
Nonaccrual, loans past due over 90 days still on accrual, and troubled debt restructured ("TDR's") by class of loans:
Nonaccrual	2,183	544
Non Performing TDR's	786	797
Total Non-Performing Loans	2,969	1,341
Real estate [Member]
Nonaccrual, loans past due over 90 days still on accrual, and troubled debt restructured ("TDR's") by class of loans:
Nonaccrual	3,795	4,565
Loans Past Due Over 90 Days Still Accruing	3	2
Non Performing TDR's	3,153	2,827
Performing TDR's	2,415	1,761
Total Non-Performing Loans	9,366	9,155
Real estate [Member] | Residential mortgage [Member]
Nonaccrual, loans past due over 90 days still on accrual, and troubled debt restructured ("TDR's") by class of loans:
Nonaccrual	3,795	4,565
Loans Past Due Over 90 Days Still Accruing	3	2
Non Performing TDR's	2,866	2,536
Performing TDR's	2,415	1,761
Total Non-Performing Loans	9,079	8,864
Real estate [Member] | Residential construction [Member]
Nonaccrual, loans past due over 90 days still on accrual, and troubled debt restructured ("TDR's") by class of loans:
Non Performing TDR's	287	291
Total Non-Performing Loans	287	291
Real estate [Member] | Mortgage warehouse [Member]
Nonaccrual, loans past due over 90 days still on accrual, and troubled debt restructured ("TDR's") by class of loans:
Nonaccrual
Loans Past Due Over 90 Days Still Accruing
Non Performing TDR's
Performing TDR's
Total Non-Performing Loans
Consumer [Member]
Nonaccrual, loans past due over 90 days still on accrual, and troubled debt restructured ("TDR's") by class of loans:
Nonaccrual	4,189	3,055
Loans Past Due Over 90 Days Still Accruing	43	52
Non Performing TDR's	1,144	148
Performing TDR's	1,441	676
Total Non-Performing Loans	6,817	3,931
Consumer [Member] | Direct Installment [Member]
Nonaccrual, loans past due over 90 days still on accrual, and troubled debt restructured ("TDR's") by class of loans:
Nonaccrual	410	138
Loans Past Due Over 90 Days Still Accruing	31	26
Total Non-Performing Loans	441	164
Consumer [Member] | Direct Installment Purchased [Member]
Nonaccrual, loans past due over 90 days still on accrual, and troubled debt restructured ("TDR's") by class of loans:
Nonaccrual
Loans Past Due Over 90 Days Still Accruing
Non Performing TDR's
Performing TDR's
Total Non-Performing Loans
Consumer [Member] | Indirect Installment [Member]
Nonaccrual, loans past due over 90 days still on accrual, and troubled debt restructured ("TDR's") by class of loans:
Nonaccrual	717	866
Loans Past Due Over 90 Days Still Accruing		26
Total Non-Performing Loans	717	892
Consumer [Member] | Home Equity [Member]
Nonaccrual, loans past due over 90 days still on accrual, and troubled debt restructured ("TDR's") by class of loans:
Nonaccrual	3,062	2,051
Loans Past Due Over 90 Days Still Accruing	12
Non Performing TDR's	1,144	148
Performing TDR's	1,441	676
Total Non-Performing Loans	$ 5,659	$ 2,875