Derivative Financial Instruments (Fair Value of Derivatives by Balance Sheet Location) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 3,650	$ 3,135
Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	4,764	4,298
Interest rate swap contracts [Member] | Derivatives Designated as Cash Flow Hedging Instruments [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	0	0
Interest rate swap contracts [Member] | Derivatives Designated as Cash Flow Hedging Instruments [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	895	1,012
Forward Loan Commitments Interest Rate Commitments [Member] | Derivatives not Designated as Hedging Instruments [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	672	392
Forward Loan Commitments Interest Rate Commitments [Member] | Derivatives not Designated as Hedging Instruments [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	3	0
Forward Loan Commitments to Sell Mortgage Loans [Member] | Derivatives not Designated as Hedging Instruments [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	3	10
Forward Loan Commitments to Sell Mortgage Loans [Member] | Derivatives not Designated as Hedging Instruments [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	889	583
Interest rate swaps with customers [Member] | Derivatives not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	200	297
Interest rate swaps with customers [Member] | Derivatives not Designated as Hedging Instruments [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	2,755	2,403
Mirror swaps with counterparties [Member] | Derivatives not Designated as Hedging Instruments [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	220	330
Mirror swaps with counterparties [Member] | Derivatives not Designated as Hedging Instruments [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ 2,777	$ 2,406