Derivatives and Hedging Activity Derivatives and Hedging Activity (Details 3) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Derivative [Line Items]
Derivative Liability Designated as Hedging Instrument, Fair Value	$ 10,368	$ 4,965
Derivative Liability, Not Subject to Master Netting Arrangement	0	0
Derivative Liability, Fair Value, Amount Offset Against Collateral	10,341	4,965
Derivative Liability		4,965us-gaap_DerivativeLiabilities
Derivative, Collateral, Right to Reclaim Securities	(27)	0
Derivative, Collateral, Right to Reclaim Cash	0	0
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	88	0
Derivative Asset, Not Subject to Master Netting Arrangement	0	0
Derivative Asset	88us-gaap_DerivativeAssets	0us-gaap_DerivativeAssets
Derivative, Collateral, Obligation to Return Securities	(27)	0
Derivative, Collateral, Obligation to Return Cash	0	0
Derivative Asset, Fair Value, Amount Offset Against Collateral	$ 61	$ 0

Fair value of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, not subject to a master netting arrangement.

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Amount of obligation to return securities collateral under master netting arrangements that have not been offset against derivative assets.

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