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v3.26.1

Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Feb. 28, 2026 | Mar. 31, 2026 | Mar. 31, 2025 | Mar. 31, 2026 | Mar. 31, 2025 | Sep. 30, 2025
Restricted Stock Units (RSUs) |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |
Vesting period |  |  |  | 3 years |  |
Unvested restricted stock outstanding (in shares) |  | 166,431 |  | 166,431 |  | 350,658
Compensation expense |  | $ 2.5 | $ 2.2 |  |  |
Restricted Stock Units (RSUs) | Time-Based Restricted Stock Unit |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |
Vesting period |  |  |  | 3 years |  |
Restricted Stock Units (RSUs) | Performance-Based Restricted Stock Unit |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |
Vesting period |  |  |  | 3 years |  |
Restricted Stock |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |
Compensation expense |  |  |  | $ 0.4 | $ 0.4 |
Shares issued annually, grant date value |  | $ 0.1 |  | $ 0.1 |  |
Restricted Stock | Share-Based Payment Arrangement, Nonemployee | Non-Employee Director Equity Incentive Plan |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |
Shares issued under the plan (in shares) | 4,200 |  |  |  |  |
Shares issued, price per share (in dollars per share) | $ 184.83 |  |  |  |  |

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