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Fair Value Liabilities Measured on Recurring Basis Unobservable Inputs Reconciliation (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Fair Value Measurements [Abstract]  
Balance at December 31, 2013 Contingent Earn-out $ 0us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Additions (Note 2) 472us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues
Balance at December 31, 2014 Contingent Earn-out $ 472us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue