v3.26.1
Stock-Based Awards - Summary of Restricted Stock Unit Activity (Detail) - Restricted Stock Units [Member]
shares in Thousands
9 Months Ended
Jun. 30, 2026
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unvested, beginning balance | shares 408
Granted | shares 181
Vested | shares (152)
Cancelled | shares (17)
Unvested, ending balance | shares 420
Weighted Average Grant Date Fair Value, Unvested beginning balance | $ / shares $ 24.15
Weighted Average Grant Date Fair Value, Granted | $ / shares 13.7
Weighted Average Grant Date Fair Value, Vested | $ / shares 33.36
Weighted Average Grant Date Fair Value, Cancelled | $ / shares 26.51
Weighted Average Grant Date Fair Value, Unvested ending balance | $ / shares $ 16.28