Loans (Schedule of Method Used to Measure Impairment of Impaired Loans) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Financing Receivable, Impaired [Line Items]
Impaired loans	$ 47,616	$ 48,416	$ 47,593
Commercial [Member] | Fair Value of Collateral [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans	41	132	506
Commercial [Member] | Discounted Cash Flow [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans	302	362	0
Owner Occupied [Member] | Fair Value of Collateral [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans	5,654	1,683	1,924
Owner Occupied [Member] | Discounted Cash Flow [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans	9,015	9,124	8,969
Non-Owner Occupied [Member] | Fair Value of Collateral [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans	1,607	508	513
Non-Owner Occupied [Member] | Discounted Cash Flow [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans	6,140	5,999	5,236
Land and Land Improvements [Member] | Fair Value of Collateral [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans	9,002	11,998	14,023
Land and Land Improvements [Member] | Discounted Cash Flow [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans	2,270	2,310	1,446
Non-Jumbo [Member] | Fair Value of Collateral [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans	1,791	1,676	3,440
Non-Jumbo [Member] | Discounted Cash Flow [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans	4,475	5,252	2,592
Jumbo [Member] | Fair Value of Collateral [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans	5,655	7,594	6,648
Jumbo [Member] | Discounted Cash Flow [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans	880	886	2,073
Home Equity [Member] | Fair Value of Collateral [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans	186	285	186
Home Equity [Member] | Discounted Cash Flow [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans	523	523	0
Consumer Portfolio Segment [Member] | Fair Value of Collateral [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans	0	2	37
Consumer Portfolio Segment [Member] | Discounted Cash Flow [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans	$ 75	$ 82	$ 0