v3.26.1
Net Income (Loss) Per Common Share Attributable to Alpha and Omega Semiconductor Limited - Basic and Diluted Income Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Earnings Per Share [Abstract]      
Net income (loss) attributable to AOS $ (42,265) $ (96,976) $ (11,081)
Basic:      
Weighted average number of common shares used to compute basic net income (loss) per share 29,951 29,405 28,236
Effect of potentially dilutive securities:      
Weighted average number of common shares used to compute diluted net income (loss) per share 29,951 29,405 28,236
Net income (loss) per share attributable to common shareholders:      
Basic (in dollars per share) $ (1.41) $ (3.30) $ (0.39)
Diluted (in dollars per share) $ (1.41) $ (3.30) $ (0.39)