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Fair Value Measurement Fair Value Liabilities Measured on Recurring Basis, Unobservable Inputs (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2017
Dec. 31, 2016
Fair Value Disclosures [Abstract]    
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances $ 19,000  
Fair Value, Liabilities Measured on Recurring Basis, Change in Unrealized Gain (Loss) 13,000  
CONTINGENT EARN-OUT LIABILITY $ 32,000 $ 0