Basis of Presentation and Summary of Significant Accounting Policies - Revenue recognition (Details) $ in Millions |
9 Months Ended |
|---|---|
|
Jun. 30, 2026
USD ($)
| |
| Basis of Presentation and Summary of Significant Accounting Policies | |
| Reserve for sales returns, decrease | $ 1.1 |
| Reserve for sales returns, increase in estimated sales return | 1.2 |
| Reserve for sales returns, reversal | $ 2.4 |