CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Revenue	$ 24,419	$ 20,616
Cost of revenue	14,846	14,328
Gross profit	9,573	6,288
Operating expenses:
Selling, general and administrative	4,222	3,793
Research and development	1,420	1,124
Total operating expenses	5,642	4,917
Income from operations	3,931	1,371
Interest income, net	142	98
Equity in loss of unconsolidated joint ventures	(334)	(933)
Other (expense) income, net	(215)	48
Income before provision for income taxes	3,524	584
Provision for income taxes	334	159
Net income	3,190	425
Less: Net (income) loss attributable to noncontrolling interests	(315)	240
Net income attributable to AXT, Inc.	$ 2,875	$ 665
Net income attributable to AXT, Inc. per common share:
Basic (in dollars per share)	$ 0.07	$ 0.02
Diluted (in dollars per share)	$ 0.07	$ 0.02
Weighted-average number of common shares outstanding:
Basic (in shares)	38,941	34,210
Diluted (in shares)	40,364	35,624