Loans and Allowance for Loan Losses (Loans by Credit Quality Indicator) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 987,657	$ 975,473
Risk Rating 10 and 20
Financing Receivable, Recorded Investment [Line Items]
Loans	23,567	23,548
Risk Rating 30 - 32
Financing Receivable, Recorded Investment [Line Items]
Loans	823,690	811,221
Risk Rating 40
Financing Receivable, Recorded Investment [Line Items]
Loans	94,507	93,923
Risk Rating 50
Financing Receivable, Recorded Investment [Line Items]
Loans	45,133	46,018
Risk Rating 60
Financing Receivable, Recorded Investment [Line Items]
Loans	760	763
Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	62,116	58,745
Construction | Risk Rating 10 and 20
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Construction | Risk Rating 30 - 32
Financing Receivable, Recorded Investment [Line Items]
Loans	44,247	41,560
Construction | Risk Rating 40
Financing Receivable, Recorded Investment [Line Items]
Loans	7,754	6,847
Construction | Risk Rating 50
Financing Receivable, Recorded Investment [Line Items]
Loans	9,515	9,738
Construction | Risk Rating 60
Financing Receivable, Recorded Investment [Line Items]
Loans	600	600
Other Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Loans	495,337	484,114
Other Commercial Real Estate | Risk Rating 10 and 20
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Other Commercial Real Estate | Risk Rating 30 - 32
Financing Receivable, Recorded Investment [Line Items]
Loans	409,985	394,904
Other Commercial Real Estate | Risk Rating 40
Financing Receivable, Recorded Investment [Line Items]
Loans	59,427	62,387
Other Commercial Real Estate | Risk Rating 50
Financing Receivable, Recorded Investment [Line Items]
Loans	25,925	26,823
Other Commercial Real Estate | Risk Rating 60
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Asset-Based
Financing Receivable, Recorded Investment [Line Items]
Loans	35,527	36,679
Asset-Based | Risk Rating 10 and 20
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Asset-Based | Risk Rating 30 - 32
Financing Receivable, Recorded Investment [Line Items]
Loans	25,155	25,830
Asset-Based | Risk Rating 40
Financing Receivable, Recorded Investment [Line Items]
Loans	10,283	10,572
Asset-Based | Risk Rating 50
Financing Receivable, Recorded Investment [Line Items]
Loans	89	277
Asset-Based | Risk Rating 60
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Other Commercial
Financing Receivable, Recorded Investment [Line Items]
Loans	114,598	116,871
Other Commercial | Risk Rating 10 and 20
Financing Receivable, Recorded Investment [Line Items]
Loans	10,972	10,329
Other Commercial | Risk Rating 30 - 32
Financing Receivable, Recorded Investment [Line Items]
Loans	95,857	101,937
Other Commercial | Risk Rating 40
Financing Receivable, Recorded Investment [Line Items]
Loans	6,578	3,253
Other Commercial | Risk Rating 50
Financing Receivable, Recorded Investment [Line Items]
Loans	1,121	1,280
Other Commercial | Risk Rating 60
Financing Receivable, Recorded Investment [Line Items]
Loans	70	72
Home Equity
Financing Receivable, Recorded Investment [Line Items]
Loans	39,047	37,736
Home Equity | Risk Rating 10 and 20
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Home Equity | Risk Rating 30 - 32
Financing Receivable, Recorded Investment [Line Items]
Loans	37,195	35,848
Home Equity | Risk Rating 40
Financing Receivable, Recorded Investment [Line Items]
Loans	807	733
Home Equity | Risk Rating 50
Financing Receivable, Recorded Investment [Line Items]
Loans	1,045	1,155
Home Equity | Risk Rating 60
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Other 1-4 Family
Financing Receivable, Recorded Investment [Line Items]
Loans	203,260	200,992
Other 1-4 Family | Risk Rating 10 and 20
Financing Receivable, Recorded Investment [Line Items]
Loans	51	58
Other 1-4 Family | Risk Rating 30 - 32
Financing Receivable, Recorded Investment [Line Items]
Loans	186,763	184,703
Other 1-4 Family | Risk Rating 40
Financing Receivable, Recorded Investment [Line Items]
Loans	9,120	9,529
Other 1-4 Family | Risk Rating 50
Financing Receivable, Recorded Investment [Line Items]
Loans	7,238	6,613
Other 1-4 Family | Risk Rating 60
Financing Receivable, Recorded Investment [Line Items]
Loans	88	89
Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans	37,772	40,336
Consumer | Risk Rating 10 and 20
Financing Receivable, Recorded Investment [Line Items]
Loans	12,544	13,161
Consumer | Risk Rating 30 - 32
Financing Receivable, Recorded Investment [Line Items]
Loans	24,488	26,439
Consumer | Risk Rating 40
Financing Receivable, Recorded Investment [Line Items]
Loans	538	602
Consumer | Risk Rating 50
Financing Receivable, Recorded Investment [Line Items]
Loans	200	132
Consumer | Risk Rating 60
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 2	$ 2