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CONVERTIBLE SENIOR NOTES AND TERM LOAN - Delayed Draw Term Loan (Details) $ in Thousands |  |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 05, 2024 USD ($) | Jul. 11, 2024 USD ($) | Aug. 03, 2022 | Sep. 30, 2025 USD ($) | Jun. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) payment | Sep. 30, 2024 USD ($) | Mar. 31, 2025 USD ($) payment | Sep. 30, 2026 USD ($) | Aug. 10, 2022 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face value |  |  |  | $ 328,914 |  |  | $ 328,914 |  | $ 353,914 |  |
Cash and cash equivalents |  |  |  | 75,872 |  | $ 117,400 | 75,872 | $ 117,400 | 88,050 |  |
Loss on debt extinguishment |  |  |  | 46 |  | $ 11,996 | 127 | $ 11,996 |  |  |
Unamortized debt discount and issuance costs |  |  |  | 3,125 |  |  | 3,125 |  | 3,950 |  |
Long-term debt |  |  |  | 325,789 |  |  | $ 325,789 |  | $ 349,964 |  |
Debt Instrument, Number Of Principal Payments | payment |  |  |  |  |  |  | 2 |  | 3 |  |
Aggregate Principal Amount |  |  |  |  | $ 25,000 |  |  |  | $ 48,000 |  |
Delayed Draw Term Loan Facility | Line of credit |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents | $ 29,000 |  |  |  |  |  |  |  |  |  |
2024 Term Loan | Loans payable |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face value | 225,000 |  |  | 127,000 |  |  | $ 127,000 |  | 152,000 |  |
Unamortized debt discount and issuance costs |  |  |  | 528 |  |  | 528 |  | 826 |  |
Long-term debt |  |  |  | $ 126,472 |  |  | $ 126,472 |  | 151,174 |  |
Term Loan |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss on debt extinguishment | $ 12,000 |  |  |  |  |  |  |  |  |  |
Term Loan | Loans payable |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face value |  |  |  |  |  |  |  |  | $ 250,000 |  |
Debt instrument, basis spread on variable rate |  |  | 6.50% |  |  |  |  |  |  |  |
Debt instrument, effective interest rate |  |  |  | 11.90% |  |  | 11.90% |  |  |  |
Loss on debt extinguishment |  |  |  | $ 500 |  |  |  |  |  |  |
Unamortized debt discount and issuance costs |  |  |  |  |  |  |  |  |  |  | $ 20,000
Debt discount and issuance costs paid in common stock |  |  |  |  |  |  |  |  |  |  | $ 2,800
Secured debt | Delayed Draw Term Loan Facility | Line of credit |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face value |  | $ 200,000 |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  | 3.00% |  |  |  |  |  |  |
Periodic interest expense |  |  |  | $ 2,500 |  |  |  |  |  |  |
Repayments of principal year 2025 |  |  |  | 37,500 |  |  | $ 37,500 |  |  |  |
Repayments of principal year 2026 |  | 7,000 |  | $ 3,000 |  |  | $ 3,000 |  |  |  |
Repayments of principal year 2027 |  | 44,500 |  |  |  |  |  |  |  |  |
Repayments of principal is due before or upon 2028 |  | $ 82,500 |  |  |  |  |  |  |  |  |
Debt instrument, effective interest rate |  |  |  | 8.65% |  |  | 8.65% |  |  |  |
Long-term debt |  |  |  | $ 127,000 |  |  | $ 127,000 |  |  |  |
Secured debt | Delayed Draw Term Loan Facility | Line of credit | Forecast |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt, additional quarterly payment |  |  |  |  |  |  |  |  |  | $ 12,500 |
Secured debt | Delayed Draw Term Loan Facility | Line of credit | Margin one |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  | 2.50% |  |  |  |  |  |  |  |  |
Secured debt | Delayed Draw Term Loan Facility | Line of credit | Margin two |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  | 2.75% |  |  |  |  |  |  |  |  |
Secured debt | Delayed Draw Term Loan Facility | Line of credit | Margin three |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  | 3.00% |  |  |  |  |  |  |  |  |

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