Loans (Credit Quality Indicators - Commercial) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 1,142,298	$ 1,049,694
Pass [Member] | Commercial Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	653,639	583,162
Pass [Member] | Commercial Construction and Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	25,132	10,955
Pass [Member] | Commercial Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	463,527	455,577
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	53,958	52,490
Special Mention [Member] | Commercial Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	23,424	29,759
Special Mention [Member] | Commercial Construction and Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Special Mention [Member] | Commercial Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	30,534	22,731
Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	23,071	22,444
Classified [Member] | Commercial Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	16,158	11,892
Classified [Member] | Commercial Construction and Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Classified [Member] | Commercial Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 6,913	$ 10,552