Derivative Instruments (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Derivative [Line Items]
Derivative, Notional Amount1	$ 9,334	$ 10,034
DerivativeAssetFairValueGrossAsset	634	844
Derivative Asset, Fair Value, Gross Liability	634	844
Derivative, Gain (Loss) on Derivative, Net	0	0
Derivative, Interest Rate Swap, Pay Fixed, Receive Variable [Member]
Derivative [Line Items]
Derivative, Notional Amount1	4,667	5,017
DerivativeAssetFairValueGrossAsset	0	0
Derivative Asset, Fair Value, Gross Liability	634	844
Derivative, Gain (Loss) on Derivative, Net	210	366
Derivative, Interest Rate Swap, Pay Variable, Receive Fixed [Member]
Derivative [Line Items]
Derivative, Notional Amount1	4,667	5,017
DerivativeAssetFairValueGrossAsset	634	844
Derivative Asset, Fair Value, Gross Liability	0	0
Derivative, Gain (Loss) on Derivative, Net	$ (210)	$ (366)