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CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (1,458)	$ (6,221)	$ (9,605)
Other comprehensive (loss) income
Change in net unrealized (loss) gain on investments, net of tax	(5,729)	1,037	668
Change in foreign currency translation adjustments, net of tax	(1,135)	1,589	(745)
Other comprehensive (loss) income	(6,864)	2,626	(77)
Total comprehensive loss	$ (8,322)	$ (3,595)	$ (9,682)

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