Loans (Troubled Debt Restructuring) (Details) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016 USD ($) loan	Sep. 30, 2015 USD ($) loan	Sep. 30, 2016 USD ($) loan	Sep. 30, 2015 USD ($) loan
Financing Receivable, Modifications [Line Items]
Number of loans modified as a troubled debt restructuring | loan		5	3	7	9
Pre-Modification Recorded Investment	[1]	$ 914	$ 1,716	$ 4,597	$ 2,498
Post-Modification Recorded Investment	[1]	$ 914	$ 1,716	$ 4,597	$ 2,498
Commercial Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Number of loans modified as a troubled debt restructuring | loan		0	1	0	1
Pre-Modification Recorded Investment	[1]	$ 0	$ 1,190	$ 0	$ 1,190
Post-Modification Recorded Investment	[1]	$ 0	$ 1,190	$ 0	$ 1,190
Commercial Construction & Development [Member]
Financing Receivable, Modifications [Line Items]
Number of loans modified as a troubled debt restructuring | loan		0	0	0	0
Pre-Modification Recorded Investment	[1]	$ 0	$ 0	$ 0	$ 0
Post-Modification Recorded Investment	[1]	$ 0	$ 0	$ 0	$ 0
Commercial & Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of loans modified as a troubled debt restructuring | loan		5	0	6	3
Pre-Modification Recorded Investment	[1]	$ 914	$ 0	$ 1,047	$ 584
Post-Modification Recorded Investment	[1]	$ 914	$ 0	$ 1,047	$ 584
Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Number of loans modified as a troubled debt restructuring | loan		0	2	1	3
Pre-Modification Recorded Investment	[1]	$ 0	$ 526	$ 3,550	$ 619
Post-Modification Recorded Investment	[1]	$ 0	$ 526	$ 3,550	$ 619
Homeowner Construction [Member]
Financing Receivable, Modifications [Line Items]
Number of loans modified as a troubled debt restructuring | loan		0	0	0	0
Pre-Modification Recorded Investment	[1]	$ 0	$ 0	$ 0	$ 0
Post-Modification Recorded Investment	[1]	$ 0	$ 0	$ 0	$ 0
Home Equity Lines [Member]
Financing Receivable, Modifications [Line Items]
Number of loans modified as a troubled debt restructuring | loan		0	0	0	0
Pre-Modification Recorded Investment	[1]	$ 0	$ 0	$ 0	$ 0
Post-Modification Recorded Investment	[1]	$ 0	$ 0	$ 0	$ 0
Home Equity Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of loans modified as a troubled debt restructuring | loan		0	0	0	1
Pre-Modification Recorded Investment	[1]	$ 0	$ 0	$ 0	$ 70
Post-Modification Recorded Investment	[1]	$ 0	$ 0	$ 0	$ 70
Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of loans modified as a troubled debt restructuring | loan		0	0	0	1
Pre-Modification Recorded Investment	[1]	$ 0	$ 0	$ 0	$ 35
Post-Modification Recorded Investment	[1]	$ 0	$ 0	$ 0	$ 35

[1] The recorded investment in troubled debt restructurings consists of unpaid principal balance, net of charge-offs and unamortized deferred loan origination fees and costs, at the time of the restructuring. For accruing troubled debt restructured loans, the recorded investment also includes accrued interest.