Revenues, net - Allowance for Credit Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at the beginning of the year	$ 1,189	$ 1,163
Additions / (reductions) during the period	(496)	300
Reductions due to write-off of Accounts Receivables	(129)	(269)
Translation adjustment	9	(5)
Balance at the end of the year	$ 573	$ 1,189