Loans (Credit Quality Indicators - Commercial) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 1,737,164	$ 1,746,145
Pass [Member] | Commercial Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	1,067,829	1,065,358
Pass [Member] | Commercial Construction & Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	123,841	121,371
Pass [Member] | Commercial & Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	545,494	559,416
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	10,006	9,714
Special Mention [Member] | Commercial Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	776	776
Special Mention [Member] | Commercial Construction & Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Special Mention [Member] | Commercial & Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	9,230	8,938
Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	15,329	15,807
Classified [Member] | Commercial Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	8,043	8,052
Classified [Member] | Commercial Construction & Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Classified [Member] | Commercial & Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 7,286	$ 7,755