CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
CONSOLIDATED STATEMENTS OF OPERATIONS
Revenue	$ 75,795	$ 141,118	$ 137,393
Cost of revenue	62,477	88,997	89,979
Gross profit	13,318	52,121	47,414
Operating expenses:
Selling, general and administrative	22,806	25,654	24,189
Research and development	12,081	13,913	10,328
Total operating expenses	34,887	39,567	34,517
Income (loss) from operations	(21,569)	12,554	12,897
Interest expense, net	(1,527)	(1,071)	(213)
Equity in income of unconsolidated joint ventures	1,884	5,957	4,409
Other income, net	2,179	3,487	509
Income (loss) before provision for income taxes	(19,033)	20,927	17,602
Provision for income taxes	160	2,185	1,093
Net income (loss)	(19,193)	18,742	16,509
Less: Net (income) loss attributable to noncontrolling interests and redeemable noncontrolling interests	1,312	(2,931)	(1,934)
Net income (loss) attributable to AXT, Inc.	$ (17,881)	$ 15,811	$ 14,575
Net income (loss) attributable to AXT, Inc. per common share:
Basic	$ (0.42)	$ 0.37	$ 0.35
Diluted	$ (0.42)	$ 0.37	$ 0.34
Weighted-average number of common shares outstanding:
Basic	42,643	42,104	41,367
Diluted	42,643	42,715	42,720