CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 3,190	$ 425
Other comprehensive income, net of tax:
Change in foreign currency translation gain, net of tax	2,816	475
Change in unrealized loss on available-for-sale investments, net of tax	(117)	(123)
Total other comprehensive income, net of tax	2,699	352
Comprehensive income	5,889	777
Less: Comprehensive (income) loss attributable to noncontrolling interests	(575)	185
Comprehensive income attributable to AXT, Inc.	$ 5,314	$ 962