v3.26.1
Debt - Schedule of Interest Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Debt Instrument [Line Items]        
Amortization of deferred financing costs     $ 1,419 $ 1,238
Senior Notes | 2032 Senior Notes        
Debt Instrument [Line Items]        
Contractual interest expense $ 5,531 $ 5,532 16,594 5,716
Amortization of deferred financing costs 223 205 655 212
Total interest expense 5,754 5,737 17,249 5,928
Senior Notes | 2029 Convertible Notes        
Debt Instrument [Line Items]        
Contractual interest expense 2,156 2,156 6,469 6,469
Amortization of deferred financing costs 270 260 764 726
Total interest expense 2,426 2,416 7,233 7,195
Senior Notes | 2025 Convertible Notes:        
Debt Instrument [Line Items]        
Contractual interest expense 0 204 0 1,432
Amortization of deferred financing costs 0 49 0 301
Total interest expense $ 0 $ 253 $ 0 $ 1,733