Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies Representation and Warranty Obligations (Details)

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Commitments and Contingencies Representation and Warranty Obligations (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Loss Contingencies [Line Items]    
Loss Contingency, Estimate of Possible Loss $ 2,455us-gaap_LossContingencyEstimateOfPossibleLoss $ 633us-gaap_LossContingencyEstimateOfPossibleLoss