Loans (Impaired Loans Interest Income Recognized) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Financing Receivable, Impaired [Line Items]
Average Recorded Investment of Impaired Loans	$ 33,165	$ 29,552	$ 33,628	$ 30,575
Interest Income Recognized on Impaired Loans	264	214	502	404
Commercial Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment of Impaired Loans	9,549	13,677	9,664	14,208
Interest Income Recognized on Impaired Loans	26	87	52	180
Commercial Construction & Development [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment of Impaired Loans	0	0	0	0
Interest Income Recognized on Impaired Loans	0	0	0	0
Commercial & Industrial [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment of Impaired Loans	6,864	3,290	6,914	3,545
Interest Income Recognized on Impaired Loans	76	10	152	21
Residential Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment of Impaired Loans	15,915	10,903	16,076	10,986
Interest Income Recognized on Impaired Loans	150	98	272	167
Homeowner Construction [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment of Impaired Loans	0	0	0	0
Interest Income Recognized on Impaired Loans	0	0	0	0
Home Equity Lines [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment of Impaired Loans	95	315	86	493
Interest Income Recognized on Impaired Loans	2	6	4	8
Home Equity Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment of Impaired Loans	602	1,216	746	1,195
Interest Income Recognized on Impaired Loans	8	11	16	24
Other Consumer [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment of Impaired Loans	140	151	142	148
Interest Income Recognized on Impaired Loans	$ 2	$ 2	$ 6	$ 4