Employee Benefit Plans - Pension Obligations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation, Beginning Balance	$ 5,259	$ 4,881
Service cost	252	227
Interest cost	37	78
Actuarial losses	159	206
Benefits paid	(173)	(31)
Foreign currency translation adjustment	523	(102)
Projected benefit obligation, Ending Balance	6,057	5,259
Accrued and other current liabilities
Defined Benefit Plan Disclosure [Line Items]
Current portion (presented under “Accrued and other current liabilities”)	47	30
Other Noncurrent Liabilities [Member]
Defined Benefit Plan Disclosure [Line Items]
Long-term portion (presented under “Other non-current liabilities”)	$ 6,010	$ 5,229