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REVENUES FROM CONTRACTS WITH CUSTOMERS - Schedule of Changes in Contract Assets and Liabilities (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2019
USD ($)
Contract Asset  
Contract asset, Beginning of period $ 4,193
Transferred to trade receivable of contract asset included in beginning of the year contract asset (4,193)
Contract asset, net of transferred to trade receivables on contracts during the period 9,371
Contract asset, End of Period 9,371
Contract Liability  
Contract liability, Beginning of Period 12,716
Recognition of revenue included in beginning of year contract liability (6,343)
Contract liability, net of revenue recognized on contracts during the period 4,766
Foreign currency translation (5)
Contract liability, End of Period $ 11,134