Derivative Financial Instruments Schedule of Offsetting of Derivate Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Offsetting Liabilities [Line Items]
Derivative Liabilities, Fair Value	$ 447	$ 381
Derivative Liability, Fair Value, Amount Offset Against Collateral	0	0
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	447	381
Derivative Liability, Fair Value, Gross Asset	(447)	(287)
Derivative, Collateral, Right to Reclaim Cash	0	0
Derivative Liability	0us-gaap_DerivativeLiabilities	94us-gaap_DerivativeLiabilities
Barclays [Member]
Offsetting Liabilities [Line Items]
Derivative Liabilities, Fair Value	16	287
Derivative Liability, Fair Value, Amount Offset Against Collateral	0	0
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	16	287
Derivative Liability, Fair Value, Gross Asset	(16)	(287)
Derivative, Collateral, Right to Reclaim Cash	0	0
Derivative Liability	0	0
Wells Fargo Bank [Member]
Offsetting Liabilities [Line Items]
Derivative Liabilities, Fair Value	431	94
Derivative Liability, Fair Value, Amount Offset Against Collateral	0	0
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	431	94
Derivative Liability, Fair Value, Gross Asset	(431)	0
Derivative, Collateral, Right to Reclaim Cash	0	0
Derivative Liability	$ 0	$ 94

Fair value, after offset of derivative asset, of financial liability or 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, elected not to be and before offset against a right to receive collateral under a master netting arrangement. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Fair value, after the effects of master netting arrangements, of a financial liability or 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. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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