Credit Quality Assessment (Credit Risk Rating Indicators for Each Segment of Commercial Loan Portfolio) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	$ 2,975,912	$ 2,784,266
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	368,611	356,651
Commercial Acquisition, Development and Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	194,666	160,696
Commercial Investor Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	575,984	552,178
Commercial Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	584,964	592,823
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	1,724,225	1,662,348
Commercial Real Estate Portfolio Segment [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [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 [Line Items]
Total loans and leases	194,666	160,696
Commercial Real Estate Portfolio Segment [Member] | Commercial Investor Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	575,984	552,178
Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	584,964	592,823
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	1,644,511	1,557,315
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	344,076	324,941
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Commercial Acquisition, Development and Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	189,604	154,869
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Commercial Investor Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	557,036	523,901
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Commercial Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	553,795	553,604
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	28,433	34,812
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	14,752	16,166
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Commercial Investor Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	3,882	2,944
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Commercial Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	9,799	15,702
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	51,281	69,951
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	9,783	15,274
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Commercial Acquisition, Development and Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	5,062	5,827
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Commercial Investor Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	15,066	25,333
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Commercial Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	21,370	23,517
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases		270
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases		$ 270