Loans (Past Due Loans) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30 to 59 Days Past Due	$ 6,708		$ 6,033
Loans 60 to 89 Days Past Due	2,207		2,368
Loans Over 90 Days Past Due	10,166		9,677
Total Loans Past Due	19,081		18,078
Current Loans	2,861,511		2,841,198
Total loans	2,880,592	[1]	2,859,276	[1]
Commercial Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30 to 59 Days Past Due	497		0
Loans 60 to 89 Days Past Due	61		0
Loans Over 90 Days Past Due	5,115		5,315
Total Loans Past Due	5,673		5,315
Current Loans	859,369		838,663
Total loans	865,042		843,978
Commercial Construction & Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30 to 59 Days Past Due	0		0
Loans 60 to 89 Days Past Due	0		0
Loans Over 90 Days Past Due	0		0
Total Loans Past Due	0		0
Current Loans	89,851		79,592
Total loans	89,851		79,592
Commercial & Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30 to 59 Days Past Due	229		2,136
Loans 60 to 89 Days Past Due	229		1,202
Loans Over 90 Days Past Due	721		181
Total Loans Past Due	1,179		3,519
Current Loans	603,451		608,399
Total loans	604,630		611,918
Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30 to 59 Days Past Due	4,470		2,943
Loans 60 to 89 Days Past Due	1,352		821
Loans Over 90 Days Past Due	3,607		3,284
Total Loans Past Due	9,429		7,048
Current Loans	945,476		941,683
Total loans	954,905		948,731
Homeowner Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30 to 59 Days Past Due	0		0
Loans 60 to 89 Days Past Due	0		0
Loans Over 90 Days Past Due	0		0
Total Loans Past Due	0		0
Current Loans	32,659		36,684
Total loans	32,659		36,684
Home Equity Lines [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30 to 59 Days Past Due	1,244		570
Loans 60 to 89 Days Past Due	429		100
Loans Over 90 Days Past Due	463		841
Total Loans Past Due	2,136		1,511
Current Loans	237,401		240,969
Total loans	239,537		242,480
Home Equity Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30 to 59 Days Past Due	213		349
Loans 60 to 89 Days Past Due	111		240
Loans Over 90 Days Past Due	255		56
Total Loans Past Due	579		645
Current Loans	46,148		46,322
Total loans	46,727		46,967
Other Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30 to 59 Days Past Due	55		35
Loans 60 to 89 Days Past Due	25		5
Loans Over 90 Days Past Due	5		0
Total Loans Past Due	85		40
Current Loans	47,156		48,886
Total loans	$ 47,241		$ 48,926

[1] Includes net unamortized loan origination costs of $2.2 million and $2.1 million, respectively, and net unamortized premiums on purchased loans of $92 thousand and $94 thousand, respectively, at March 31, 2015 and December 31, 2014.