CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net income	$ 3,765	$ 217
Other comprehensive income (loss), net of tax:
Change in foreign currency translation loss, net of tax	(156)	(1,874)
Change in unrealized gain (loss) on available-for-sale debt investments, net of tax	(8)	1
Total other comprehensive loss, net of tax	(164)	(1,873)
Comprehensive income (loss)	3,601	(1,656)
Less: Comprehensive income attributable to noncontrolling interests	(307)	(297)
Comprehensive income (loss) attributable to AXT, Inc.	$ 3,294	$ (1,953)