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Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Condensed Consolidated Statements of Comprehensive Loss
Net loss	$ (5,389)	$ (5,803)	$ (8,916)	$ (9,746)
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on available-for-sale debt securities	(432)	(145)	(1,178)	336
Reclassification of realized (gain) loss on available-for-sale debt securities to earnings	8	(15)	38	(27)
Foreign currency translation adjustments	644	(3)	(3,136)	(4)
Other comprehensive income (loss)	220	(163)	(4,276)	305
Total comprehensive loss	$ (5,169)	$ (5,966)	$ (13,192)	$ (9,441)

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