Loans (Credit Quality Indicators - Commercial) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Commercial Mortgages | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 1,041,127	$ 1,067,373
Commercial Mortgages | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	1,831	0
Commercial Mortgages | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	5,114
Commercial Construction & Development | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	175,685	138,008
Commercial Construction & Development | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Commercial Construction & Development | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Commercial Real Estate | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	1,216,812	1,205,381
Commercial Real Estate | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	1,831	0
Commercial Real Estate | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	5,114
Commercial & Industrial | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	586,941	592,749
Commercial & Industrial | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	35,612	9,804
Commercial & Industrial | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	9,476	9,781
Total Commercial | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	1,803,753	1,798,130
Total Commercial | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	37,443	9,804
Total Commercial | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 9,476	$ 14,895