Accumulated Other Comprehensive Loss - Schedule of Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 118,013	$ 164,611
Unrealized gain on investments	2	27
Foreign currency translation adjustments	212	(327)
Other comprehensive income (loss)	214	(300)
Ending Balance	111,936	118,013
Unrealized Gain (Loss) on Investments, net of tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(2)	(29)
Ending Balance	0	(2)
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(257)	70
Ending Balance	(45)	(257)
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(259)	41
Other comprehensive income (loss)	214	(300)
Ending Balance	$ (45)	$ (259)