Net Income (Loss) Per Common Share Attributable to Alpha and Omega Semiconductor Limited - Potential Dilutive Shares (Details) - shares shares in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Potential dilutive securities (in shares) | 3,421 | 2,846 | 3,376 | 3,145 |
| Employee stock options and RSUs | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Potential dilutive securities (in shares) | 2,221 | 2,322 | 2,367 | 2,493 |
| ESPP | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Potential dilutive securities (in shares) | 1,200 | 524 | 1,009 | 652 |