Fair Value of Assets and Liabilities (FV on recurring or nonrecurring basis-level 3 inputs) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Interest Rate Lock Commitments | Pricing Model
Level 3 Assets and Liabilities, Fair Value and Fair Value Unobservable Inputs
Weighted Average Closing Ratio (as a percent)	93.42%	93.85%
Interest Rate Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net	$ 303	$ 152
Interest Rate Swap Agreements | Discounted Cash Flow
Level 3 Assets and Liabilities, Fair Value and Fair Value Unobservable Inputs
Weighted Average Credit Factor (as a percent)	0.21%	0.21%
Interest Rate Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net	(33)	(34)
Mortgage Servicing Rights | Discounted Cash Flow
Level 3 Assets and Liabilities, Fair Value and Fair Value Unobservable Inputs
Weighted Average Constant Prepayment Rate (as a percent)	12.96%	11.62%
Weighted Average Discount Rate (as a percent)	10.32%	10.61%
Mortgage Servicing Rights, at Fair Value	$ 23,708	$ 25,441