Other Current Assets Components of Other Current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Tax receivables principally value added taxes	$ 18,706	$ 16,049
Receivable Due From Information Technology Provider	12,852	6,262
Prepaid insurance	2,167	2,918
Derivatives (foreign currency forward exchange contracts)	1,726	838
Prepaid social charges	1,493	1,216
Service contracts	1,406	2,013
Prepaid inventory	780	684
Recoverable income taxes	225	297
Prepaid debt fees	206	207
Prepaid and other current assets	9,002	7,425
Other current assets	$ 48,563	$ 37,909