Credit Quality Assessment (Credit Quality of Loan Portfolio) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
31-60 days	$ 7,266	$ 11,923
61-90 days	2,594	4,066
> 90 days	655	1
Total past due	10,515	15,990
Non-accrual loans and leases	35,639	30,574
Loans aquired with deteriorated credit quality	3,134	4,300
Current loans	2,926,624	2,733,402
Total loans and leases	2,975,912	2,784,266
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
31-60 days	564	382
61-90 days	403	1,142
Total past due	967	1,524
Non-accrual loans and leases	4,151	3,400
Loans aquired with deteriorated credit quality	1,267	1,363
Current loans	362,226	350,364
Total loans and leases	368,611	356,651
Commercial Acquisition, Development and Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and leases	194,666	160,696
Commercial Investor Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and leases	575,984	552,178
Commercial Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and leases	584,964	592,823
Leases [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
31-60 days		4
Total past due		4
Current loans	156	699
Total loans and leases	156	703
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
31-60 days	732	716
61-90 days	20	176
> 90 days	6	1
Total past due	758	893
Non-accrual loans and leases	1,830	2,259
Current loans	408,135	370,505
Total loans and leases	410,723	373,657
Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and leases	698,925	618,381
Residential Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and leases	141,883	129,177
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and leases	1,724,225	1,662,348
Commercial Real Estate Portfolio Segment [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and leases	368,611	356,651
Commercial Real Estate Portfolio Segment [Member] | Commercial Acquisition, Development and Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
31-60 days	948
Total past due	948
Non-accrual loans and leases	3,792	4,127
Current loans	189,926	156,569
Total loans and leases	194,666	160,696
Commercial Real Estate Portfolio Segment [Member] | Commercial Investor Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
31-60 days	169	5,826
61-90 days	2,009
Total past due	2,178	5,826
Non-accrual loans and leases	8,210	6,802
Loans aquired with deteriorated credit quality	53	571
Current loans	565,543	538,979
Total loans and leases	575,984	552,178
Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
31-60 days	839	876
61-90 days		2,540
> 90 days	649
Total past due	1,488	3,416
Non-accrual loans and leases	10,742	5,936
Loans aquired with deteriorated credit quality	1,814	2,366
Current loans	570,920	581,105
Total loans and leases	584,964	592,823
Residential Real Estate Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
31-60 days	4,014	4,119
61-90 days	162	208
Total past due	4,176	4,327
Non-accrual loans and leases	4,417	5,735
Current loans	690,332	608,319
Total loans and leases	698,925	618,381
Residential Real Estate Portfolio Segment [Member] | Residential Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans and leases	2,497	2,315
Current loans	139,386	126,862
Total loans and leases	$ 141,883	$ 129,177