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Other Current Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
VAT receivable $ 7,358 $ 4,925
Prepaid income tax asset 6,222 3,616
Prepaid and other current assets 3,160 3,261
Total other current assets $ 16,740 $ 11,802