CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
CONSOLIDATED STATEMENTS OF OPERATIONS
Revenue	$ 141,118	$ 137,393	$ 95,361
Cost of revenue	88,997	89,979	65,086
Gross profit	52,121	47,414	30,275
Operating expenses:
Selling, general and administrative	25,654	24,189	19,200
Research and development	13,913	10,328	7,135
Total operating expenses	39,567	34,517	26,335
Income from operations	12,554	12,897	3,940
Interest expense, net	(1,071)	(213)	(179)
Equity in income of unconsolidated joint ventures	5,957	4,409	111
Other income, net	3,487	509	3,200
Income before provision for income taxes	20,927	17,602	7,072
Provision for income taxes	2,185	1,093	2,031
Net income	18,742	16,509	5,041
Less: Net income attributable to noncontrolling interests and redeemable noncontrolling interests	(2,931)	(1,934)	(1,803)
Net income attributable to AXT, Inc.	$ 15,811	$ 14,575	$ 3,238
Net income attributable to AXT, Inc. per common share:
Basic	$ 0.37	$ 0.35	$ 0.08
Diluted	$ 0.37	$ 0.34	$ 0.07
Weighted-average number of common shares outstanding:
Basic	42,104	41,367	40,152
Diluted	42,715	42,720	41,025