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Derivative Instruments (Details) - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Derivative [Line Items] |  |
Derivative, Notional Amount1 | $ 8,984 | $ 9,334
DerivativeAssetFairValueGrossAsset | 552 | 634
Derivative Asset, Fair Value, Gross Liability | 552 | 634
Derivative, Interest Rate Swap, Pay Fixed, Receive Variable [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount1 | 4,492 | 4,667
DerivativeAssetFairValueGrossAsset | 0 | 0
Derivative Asset, Fair Value, Gross Liability | 552 | 634
Derivative, Interest Rate Swap, Pay Variable, Receive Fixed [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount1 | 4,492 | 4,667
DerivativeAssetFairValueGrossAsset | 552 | 634
Derivative Asset, Fair Value, Gross Liability | $ 0 | $ 0

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