v3.26.1
Stock-based Compensation - Summary of Stock Option Activity (Details)
$ / shares in Units, shares in Thousands, $ in Thousands
 9 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
$ / shares
shares
Sep. 30, 2025
USD ($)
$ / shares
shares
Shares    
Beginning balance (in shares) | shares 1,276  
Forfeited (in shares) | shares (7)  
Exercised (in shares) | shares (270)  
Ending balance (in shares) | shares 999 1,276
Number of options, Exercisable (in shares) | shares 999  
Weighted average exercise price per share    
Beginning balance (in usd per share) | $ / shares $ 30.80  
Forfeited (in usd per share) | $ / shares 43.42  
Exercised (in dollars per share) | $ / shares 21.75  
Ending balance (in usd per share) | $ / shares 33.15 $ 30.80
Vested and exercisable (in usd per share) | $ / shares $ 33.15  
Weighted average remaining contractual term (years)    
Outstanding 2 years 10 months 28 days 3 years 7 months 2 days
Weighted average remaining contractual term (years), Exercisable 2 years 10 months 28 days  
Aggregate Intrinsic Value    
Aggregate intrinsic value, outstanding beginning balance | $ $ 6,616  
Exercised | $ 10,767  
Aggregate intrinsic value, outstanding ending balance | $ 70,282 $ 6,616
Aggregate intrinsic value, Vested and exercisable | $ $ 70,282