Loans and Leases, Troubled Debt Restructuring (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 Loan	Dec. 31, 2013 Loan
Financing Receivable, Modifications [Line Items]
Number of TDRs already classified as impaired	4
Number of loans	12	12
Total TDRs	$ 10,259	$ 12,084
Financing Receivable New Modifications for the Period [Abstract]
Number of loans	2
Rate	0
Term	45
Payment	0
Combination of types	28
Total	73
Pre-Modification Outstanding Recorded Investment	73
Post-Modification Outstanding Recorded Investment	73
Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Total TDRs	8,214	9,524
Non-Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Total TDRs	2,045	2,560
Commercial real estate [Member]
Financing Receivable, Modifications [Line Items]
Number of loans	2	3
Total TDRs	2,957	3,847
Commercial real estate [Member] | Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Total TDRs	2,957	3,847
Commercial real estate [Member] | Non-Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Total TDRs	0	0
Construction and land development [Member]
Financing Receivable, Modifications [Line Items]
Number of loans	3	4
Total TDRs	1,388	1,736
Construction and land development [Member] | Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Total TDRs	1,128	1,257
Construction and land development [Member] | Non-Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Total TDRs	260	479
Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of loans	5	3
Total TDRs	5,798	6,380
Financing Receivable New Modifications for the Period [Abstract]
Number of loans	2
Rate	0
Term	45
Payment	0
Combination of types	28
Total	73
Pre-Modification Outstanding Recorded Investment	73
Post-Modification Outstanding Recorded Investment	73
Commercial and Industrial [Member] | Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Total TDRs	4,129	4,420
Commercial and Industrial [Member] | Non-Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Total TDRs	1,669	1,960
Residential real estate [Member]
Financing Receivable, Modifications [Line Items]
Number of loans	2	2
Total TDRs	116	121
Residential real estate [Member] | Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Total TDRs	0	0
Residential real estate [Member] | Non-Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Total TDRs	$ 116	$ 121