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Commitments and Contingencies (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Other Commitments [Line Items]    
Payments for Legal Settlements $ 1,300  
Capital Lease Obligations, Current 866 $ 640
Capital Leases    
Capital Lease Obligations, Noncurrent 1,664 479
Capital Lease Obligations $ 2,530 $ 1,119