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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 11,009	$ 10,061	$ 4,966
Other comprehensive income (loss), net of tax:
Change in foreign currency translation gain (loss), net of tax	(5,749)	3,726	(4,305)
Change in unrealized gain (loss) on available-for-sale investments, net of tax	9	(138)	(312)
Total other comprehensive income (loss), net of tax	(5,740)	3,588	(4,617)
Comprehensive income	5,269	13,649	349
Less: Comprehensive loss (income) attributable to noncontrolling interests	(994)	(347)	1,158
Comprehensive income attributable to AXT, Inc.	$ 4,275	$ 13,302	$ 1,507

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