Other Current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
VAT receivable	$ 4,927	$ 4,925
Prepaid income tax asset	4,021	3,616
Prepaid and other current assets	3,941	3,261
Total other current assets	$ 12,889	$ 11,802