Commitments and Contingencies (Financial Instruments with Off Balance Sheet Risk) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Forward Loan Commitments Interest Rate Commitments [Member] | Forward Contracts [Member] | Notional or Principal Amount [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance Sheet Risks, Asset	$ 26,779	$ 17,910
Forward Loan Commitments to Sell Mortgage Loans [Member] | Forward Contracts [Member] | Notional or Principal Amount [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance Sheet Risk, Liability	36,931	29,364
Interest rate swaps with customers [Member] | Interest Rate Swap [Member] | Notional or Principal Amount [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance Sheet Risks, Asset	111,986	105,582
Mirror swaps with counterparties [Member] | Interest Rate Swap [Member] | Notional or Principal Amount [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance Sheet Risk, Liability	111,986	105,582
Interest rate swap contracts [Member] | Interest Rate Swap [Member] | Notional or Principal Amount [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance Sheet Risk, Liability	22,681	22,681
Commitments to extend credit on commerical loans [Member] | Commitments to Extend Credit [Member] | Contract Amount [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance Sheet Risks, Asset	282,716	259,061
Commitments to extend credit on home equity lines [Member] | Commitments to Extend Credit [Member] | Contract Amount [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance Sheet Risks, Asset	196,744	198,432
Commitments to extend credit on other loans [Member] | Commitments to Extend Credit [Member] | Contract Amount [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance Sheet Risks, Asset	36,139	35,175
Commitments to extend credit on standby letters of credit [Member] | Commitments to Extend Credit [Member] | Contract Amount [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance Sheet Risks, Asset	$ 2,903	$ 1,363