Schedule I - Condensed Unconsolidated Statements of Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net loss including noncontrolling interest	$ (3,032)	$ (7,763)	$ (3,104)
Net Income (Loss) Attributable to Parent	(2,928)	(7,763)	(3,104)
Other comprehensive income, net of tax, foreign currency translation adjustment	(135)	(128)	76
Comprehensive loss	(3,167)	(7,891)	(3,028)
Noncontrolling interest	(103)	0	0
Comprehensive loss attributable to Alpha and Omega Semiconductor Limited	(3,064)	(7,891)	(3,028)
Parent Company [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net loss including noncontrolling interest	(3,032)	(7,763)	(3,104)
Net Income (Loss) Attributable to Parent	(2,928)	(7,763)	(3,104)
Other comprehensive income, net of tax, foreign currency translation adjustment	(135)	(128)	76
Comprehensive loss	(3,167)	(7,891)	(3,028)
Noncontrolling interest	(103)	0	0
Comprehensive loss attributable to Alpha and Omega Semiconductor Limited	$ (3,064)	$ (7,891)	$ (3,028)