Net Income (Loss) Per Common Share Attributable to Alpha and Omega Semiconductor Limited - Potential Dilutive Shares (Details) - shares shares in Thousands |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |||
| Potential dilutive securities (in shares) | 3,414 | 3,104 | 3,841 |
| Employee stock options and RSUs | |||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |||
| Potential dilutive securities (in shares) | 2,354 | 2,475 | 2,822 |
| Employee Stock | |||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |||
| Potential dilutive securities (in shares) | 1,060 | 629 | 1,019 |