CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss) including noncontrolling interest	$ 56,289	$ (18,257)	$ (14,638)
Other comprehensive income (loss), net of tax, foreign currency translation adjustment	14,190	(4,839)	(5,937)
Comprehensive income (loss)	70,479	(23,096)	(20,575)
Noncontrolling interest	4,921	(14,066)	(19,303)
Comprehensive income (loss) attributable to Alpha and Omega Semiconductor Limited	$ 65,558	$ (9,030)	$ (1,272)