Loans (Past Due Loans) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30 to 59 Days Past Due	$ 9,234		$ 5,638
Loans 60 to 89 Days Past Due	4,313		1,753
Loans Over 90 Days Past Due	7,514		14,512
Total Loans Past Due	21,061		21,903
Current Loans	2,560,063		2,440,981
Total loans	2,581,124	[1]	2,462,884	[1]
Commercial Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30 to 59 Days Past Due	311		0
Loans 60 to 89 Days Past Due	1,583		0
Loans Over 90 Days Past Due	2,250		7,492
Total Loans Past Due	4,144		7,492
Current Loans	768,628		788,757
Total loans	772,772		796,249
Commercial Construction and 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	38,574		36,289
Total loans	38,574		36,289
Commercial Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30 to 59 Days Past Due	1,785		276
Loans 60 to 89 Days Past Due	773		302
Loans Over 90 Days Past Due	417		731
Total Loans Past Due	2,975		1,309
Current Loans	551,849		529,488
Total loans	554,824		530,797
Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30 to 59 Days Past Due	5,249		4,040
Loans 60 to 89 Days Past Due	855		1,285
Loans Over 90 Days Past Due	4,335		5,633
Total Loans Past Due	10,439		10,958
Current Loans	835,748		738,205
Total loans	846,187		749,163
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	30,452		23,511
Total loans	30,452		23,511
Home Equity Lines [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30 to 59 Days Past Due	1,227		831
Loans 60 to 89 Days Past Due	554		100
Loans Over 90 Days Past Due	280		269
Total Loans Past Due	2,061		1,200
Current Loans	235,329		230,162
Total loans	237,390		231,362
Home Equity Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30 to 59 Days Past Due	309		448
Loans 60 to 89 Days Past Due	18		66
Loans Over 90 Days Past Due	106		349
Total Loans Past Due	433		863
Current Loans	45,199		39,349
Total loans	45,632		40,212
Other Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30 to 59 Days Past Due	353		43
Loans 60 to 89 Days Past Due	530		0
Loans Over 90 Days Past Due	126		38
Total Loans Past Due	1,009		81
Current Loans	54,284		55,220
Total loans	$ 55,293		$ 55,301

[1] Includes net unamortized loan origination costs of $1.5 million and $879 thousand, respectively, and net unamortized premiums on purchased loans of $100 thousand and $99 thousand, respectively, at June 30, 2014 and December 31, 2013.