Net Income (Loss) Per Share (Tables)

12 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table presents the calculation of basic and diluted net income per share attributable to common shareholders:

	Year Ended June 30,
	2020			2019		2018
	(in thousands, except per share data)
Numerator:
Net income (loss) attributable to Alpha and Omega Semiconductor Limited	$	(6,596	)	$	1,861	$	14,263
Denominator:
Basic:
Weighted average number of common shares used to compute basic net income per share	24,840			24,063		23,901
Diluted:
Weighted average number of common shares used to compute basic net income per share	24,840			24,063		23,901
Effect of potentially dilutive securities:
Stock options, RSUs and ESPP shares	—			635		943
Weighted average number of common shares used to compute diluted net income per share	24,840			24,698		24,844
Net income (loss) per share attributable to Alpha and Omega Semiconductor Limited:
Basic	$	(0.27	)	$	0.08	$	0.60
Diluted	$	(0.27	)	$	0.08	$	0.57

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following potential dilutive securities were excluded from the computation of diluted net income per share as their effect would have been anti-dilutive:

	Year Ended June 30,
	2020	2019	2018
	(in thousands)
Employee stock options and RSUs	2,028	593	186
ESPP	834	512	182
Total potential dilutive securities	2,862	1,105	368