Loans and Leases - Non-Performing Loans and Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Non-Performing Loans and Leases [Line Items]
Nonaccrual Loans and Leases	$ 13,482	$ 14,183
Accruing Troubled Debt Restructured Loans And Lease Modifications	4,279	5,245
Recorded Investment 90 Days or more Past Due and Accruing Interest	693	379
Total Non-Performing Loans and Leases	18,454	19,807
Nonaccrual Troubled Debt Restructured Loans And Lease Modifications	1,500	93
Commercial, Financial and Agricultural [Member]
Non-Performing Loans and Leases [Line Items]
Nonaccrual Loans and Leases	6,080	6,915
Accruing Troubled Debt Restructured Loans And Lease Modifications	1,443	1,602
Recorded Investment 90 Days or more Past Due and Accruing Interest	0	0
Total Non-Performing Loans and Leases	7,523	8,517
Real Estate-Commercial [Member]
Non-Performing Loans and Leases [Line Items]
Nonaccrual Loans and Leases	3,981	4,314
Accruing Troubled Debt Restructured Loans And Lease Modifications	2,417	2,449
Recorded Investment 90 Days or more Past Due and Accruing Interest	0	0
Total Non-Performing Loans and Leases	6,398	6,763
Real Estate-Residential Secured for Business Purpose [Member]
Non-Performing Loans and Leases [Line Items]
Nonaccrual Loans and Leases	2,496	1,863
Accruing Troubled Debt Restructured Loans And Lease Modifications	413	763
Recorded Investment 90 Days or more Past Due and Accruing Interest	0	0
Total Non-Performing Loans and Leases	2,909	2,626
Real Estate-Residential Secured for Personal Purpose [Member]
Non-Performing Loans and Leases [Line Items]
Nonaccrual Loans and Leases	375	376
Accruing Troubled Debt Restructured Loans And Lease Modifications	0	421
Recorded Investment 90 Days or more Past Due and Accruing Interest	125	0
Total Non-Performing Loans and Leases	500	797
Real Estate-Home Equity Secured for Personal Purpose [Member]
Non-Performing Loans and Leases [Line Items]
Nonaccrual Loans and Leases	129	275
Accruing Troubled Debt Restructured Loans And Lease Modifications	0	0
Recorded Investment 90 Days or more Past Due and Accruing Interest	353	0
Total Non-Performing Loans and Leases	482	275
Loans to Individuals [Member]
Non-Performing Loans and Leases [Line Items]
Nonaccrual Loans and Leases	0	0
Accruing Troubled Debt Restructured Loans And Lease Modifications	0	0
Recorded Investment 90 Days or more Past Due and Accruing Interest	205	173
Total Non-Performing Loans and Leases	205	173
Lease Financings [Member]
Non-Performing Loans and Leases [Line Items]
Nonaccrual Loans and Leases	421	440
Accruing Troubled Debt Restructured Loans And Lease Modifications	6	10
Recorded Investment 90 Days or more Past Due and Accruing Interest	10	206
Total Non-Performing Loans and Leases	$ 437	$ 656