Accumulated Other Comprehensive Income ("AOCI") - Schedule of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	$ 9,719	$ 3,763
Other comprehensive income (loss)		5,153
Change in foreign currency translation	(1,497)	5,174	$ 662
Change in unrealized gains on available-for-sale debt securities	(17)
Ending balance	8,205	9,719	3,763
ASU 2016-01 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance		803
Ending balance			803
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	9,702	4,528
Other comprehensive income (loss)		5,174
Change in foreign currency translation	(1,497)
Ending balance	8,205	9,702	4,528
Unrealized (Loss) Gain on Available-for-sale Debt Securities [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	17	(765)
Other comprehensive income (loss)		(21)
Change in unrealized gains on available-for-sale debt securities	$ (17)
Ending balance		17	(765)
Unrealized (Loss) Gain on Available-for-sale Debt Securities [Member] | ASU 2016-01 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance		$ 803
Ending balance			$ 803