v3.26.1
13. STOCK-BASED COMPENSATION - Performance Stock Units - Summary of Performance Stock Units (Details)
$ / shares in Units, $ in Thousands
6 Months Ended
Mar. 31, 2026
USD ($)
$ / shares
shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Number of Option Shares, Beginning Balance 1,604,559
Number of Option Shares, Ending Balance 1,604,559
Number of Shares, Less: Not expected to vest 1,632,606
Expected (Shares) 1,604,559
Weighted Average Exercise Price, Beginning Balance | $ / shares $ 156.3 [1]
Weighted Average Exercise Price, Granted | $ / shares 0 [1]
Weighted Average Exercise Price, Ending Balance | $ / shares $ 156.3 [1]
General PSUs  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Number of Option Shares, Beginning Balance 38,460
Number of Shares, Granted 0
Number of Shares, Vested (38,460)
Number of Option Shares, Ending Balance
Number of Shares, Less: Not expected to vest 0
Expected (Shares) 0
Performance Stock  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Number of Option Shares, Beginning Balance 38,460
Number of Shares, Granted 10,944,689
Number of Shares, Vested (38,460)
Number of Option Shares, Ending Balance 10,944,689
Number of Shares, Less: Not expected to vest 3,849,000
Expected (Shares) 7,095,689
Weighted Average Exercise Price, Beginning Balance | $ / shares $ 10.61
Weighted Average Exercise Price, Granted | $ / shares 7.92
Weighted Average Exercise, Vested | $ / shares 10.61
Weighted Average Exercise Price, Ending Balance | $ / shares 7.92
Weighted Average Exercise Price, Less: Not expected to vest | $ / shares 9.4
Expected (in usd per share) | $ / shares $ 7.11
Aggregate Intrinsic Value Outstanding at Beginning | $ $ 558
Aggregate Intrinsic Value Outstanding at Ending | $ 93,139
Aggregate Intrinsic Value, Expected | $ $ 60,384
Performance Stock | LTIP PSUs  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Number of Option Shares, Beginning Balance 0
Number of Shares, Granted 3,246,689
Number of Shares, Vested 0
Number of Option Shares, Ending Balance 3,246,689
Number of Shares, Less: Not expected to vest 0
Expected (Shares) 3,246,689
Performance Stock | STPA PSUs  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Number of Option Shares, Beginning Balance 0
Number of Shares, Granted 7,698,000
Number of Shares, Vested 0
Number of Option Shares, Ending Balance 7,698,000
Number of Shares, Less: Not expected to vest 3,849,000
Expected (Shares) 3,849,000
[1] Weighted average calculated weighting the exercise price versus the number of common shares that would be granted on exercise.