Derivative Financial Instruments Part 1 (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Designated as Hedging Instrument [Member] | Forward Contracts [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet obligations		$ 155,800,000
Valuation adjustment		1,900,000
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Notional amount of mirror-image derivative contracts	60,000,000
Derivative inception date	Dec. 31, 2014
Derivative maturity date	Dec. 31, 2019
Description of variable rate basis for derivative	three-month LIBOR
Swap fixed interest rate to be paid (in hundredths)	1.66%
Period for which cash flow hedges will be used to hedge quarterly interest payments	5 years
Amount of ineffective derivative	0
Estimated amount to be reclassified as an increase to interest expense during the next twelve months	747,000
Accumulated net, after tax gain included in other comprehensive loss	136,000	1,500,000
Derivatives not Designated as Hedging Instruments [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet obligations	142,000,000
Valuation adjustment	(1,000,000)
Net positive ineffectiveness on MSR fair value	3,100,000	3,700,000
Derivatives not Designated as Hedging Instruments [Member] | Beneficiary [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Number of risk participation agreements	3	3
Aggregate notional amount of credit risk participation agreements	19,100,000	19,700,000
Derivatives not Designated as Hedging Instruments [Member] | Guarantor [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Number of risk participation agreements	1
Aggregate notional amount of credit risk participation agreements	6,200,000	0
Derivatives not Designated as Hedging Instruments [Member] | Interest Rate Lock Commitments Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet obligations	88,400,000	58,500,000
Positive valuation adjustment	1,300,000	126,000
Derivatives not Designated as Hedging Instruments [Member] | Interest Rate Swap [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Notional amount of mirror-image derivative contracts	349,400,000	355,900,000
Termination value of derivatives	1,900,000	508,000
Market value of posted collateral	$ 1,000,000