Employee Benefit Plans - Pension Obligations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation, Beginning Balance	$ 4,881	$ 5,033
Service cost	227	243
Interest cost	78	74
Actuarial (gains) losses	206	(202)
Benefits paid	(31)	(13)
Foreign currency translation adjustment	(102)	(254)
Projected benefit obligation, Ending Balance	5,259	4,881
Accrued and other current liabilities
Defined Benefit Plan Disclosure [Line Items]
Current portion (presented under “Accrued and other current liabilities”)	30	63
Other Noncurrent Liabilities [Member]
Defined Benefit Plan Disclosure [Line Items]
Long-term portion (presented under “Other non-current liabilities”)	$ 5,229	$ 4,818