Income Taxes - Schedule of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current income taxes:
Current income taxes, U.S. Federal	$ (581)	$ (452)	$ (1,932)
Current income taxes, State and local	59	89	67
Current income taxes, Foreign	2,408	4,415	3,032
Total current income taxes	1,886	4,052	1,167
Deferred income taxes:
Deferred income taxes, U.S. Federal	(151)	126	(295)
Deferred income taxes, State and local	459	135	(28)
Deferred income taxes, Foreign	272	(1,468)	14
Total deferred income taxes	580	(1,207)	(309)
Total income taxes	$ 2,466	$ 2,845	$ 858