Loans (Credit Quality Indicators - Commercial) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 1,180,433	$ 1,049,694
Pass [Member] | Commercial Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	669,220	583,162
Pass [Member] | Commercial Construction and Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	27,842	10,955
Pass [Member] | Commercial Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	483,371	455,577
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	46,042	52,490
Special Mention [Member] | Commercial Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	21,649	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	24,393	22,731
Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	25,944	22,444
Classified [Member] | Commercial Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	19,944	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	$ 6,000	$ 10,552