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Accounts Receivable, net (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Receivables [Abstract]    
Trade accounts receivable, net of allowance for credit losses of $7,333 and $5,129, respectively $ 78,082 $ 101,718
Allowance for credit losses 7,333 5,129
Unbilled receivables 26,121 43,422
Taxes receivable 29,239 18,516
Affiliated 549 549
Other receivables 3,077 2,489
Total accounts receivable, net $ 137,068 $ 166,694