CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited)
Net income (loss)	$ (1,835)	$ (1,959)
Other comprehensive income (loss), net of tax:
Change in foreign currency translation gain (loss), net of tax	(521)	407
Change in unrealized gain (loss) on available-for-sale investments, net of tax	(10)	(17)
Total other comprehensive income , net of tax	(531)	390
Comprehensive income (loss)	(2,366)	(1,569)
Less: Comprehensive income attributable to the noncontrolling interests	(126)	(498)
Comprehensive income (loss) attributable to AXT, Inc.	$ (2,492)	$ (2,067)