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CONVERTIBLE SENIOR NOTES AND TERM LOAN (Tables) | 6 Months Ended
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Sep. 30, 2025
Debt Disclosure [Abstract] |
Schedule of Convertible Debt | Components of convertible senior notes and term loans were as follows as of September 30, 2025 and March 31, 2025, respectively (in thousands):
| September 30, 2025 |  | March 31, 2025
| 2024 Term Loan |  |  |  | 2028 Notes |  | Total |  | 2024 Term Loan |  |  |  | 2028 Notes |  | Total
Principal | $ | 127,000 |  |  |  |  | $ | 201,914 |  |  | $ | 328,914 |  |  | $ | 152,000 |  |  |  |  | $ | 201,914 |  |  | $ | 353,914 |
Unamortized debt discount and issuance costs | (528) |  |  |  |  | (2,597) |  |  | (3,125) |  |  | (826) |  |  |  |  | (3,124) |  |  | (3,950) |
Net carrying amount | $ | 126,472 |  |  |  |  | $ | 199,317 |  |  | $ | 325,789 |  |  | $ | 151,174 |  |  |  |  | $ | 198,790 |  |  | $ | 349,964 |
Current portion of long-term debt | 19,173 |  |  |  |  | — |  |  | 19,173 |  |  | 11,593 |  |  |  |  | — |  |  | 11,593 |
Non-current portion of long-term debt | $ | 107,299 |  |  |  |  | $ | 199,317 |  |  | $ | 306,616 |  |  | $ | 139,581 |  |  |  |  | $ | 198,790 |  |  | $ | 338,371 |
Schedule of Interest Expense | Components of debt interest expense were as follows as of the three and six months ended September 30, 2025 and 2024, respectively (in thousands):
| Three Months Ended September 30, 2025 |  | Three Months Ended September 30, 2024
| 2024 Term Loan |  |  |  | 2028 Notes |  |  |  | Total |  | 2024 Term Loan |  | 2022 Term Loan |  | 2028 Notes |  | Total
Contractual interest expense | $ | 2,461 |  |  |  |  | $ | 2,019 |  |  |  |  | $ | 4,480 |  |  | $ | 2,619 |  |  | $ | 2,611 |  |  | $ | 2,019 |  |  | $ | 7,249 |
Amortization of debt discount and issuance costs1 | 84 |  |  |  |  | 278 |  |  |  |  | 362 |  |  | 104 |  |  | 286 |  |  | 266 |  |  | 656 |
Total debt interest expense | $ | 2,545 |  |  |  |  | $ | 2,297 |  |  |  |  | $ | 4,842 |  |  | $ | 2,723 |  |  | $ | 2,897 |  |  | $ | 2,285 |  |  | $ | 7,905 |
| Six Months Ended September 30, 2025 |  | Six Months Ended September 30, 2024
| 2024 Term Loan |  |  |  | 2028 Notes |  |  |  | Total |  | 2024 Term Loan |  | 2022 Term Loan |  | 2028 Notes |  | Total
Contractual interest expense | $ | 5,000 |  |  |  |  | $ | 4,038 |  |  |  |  | $ | 9,038 |  |  | $ | 2,619 |  |  | $ | 9,466 |  |  | $ | 4,058 |  |  | $ | 16,143 |
Amortization of debt discount and issuance costs1 | 171 |  |  |  |  | 527 |  |  |  |  | 698 |  |  | 104 |  |  | 1,110 |  |  | 504 |  |  | 1,718 |
Total debt interest expense2 | $ | 5,171 |  |  |  |  | $ | 4,565 |  |  |  |  | $ | 9,736 |  |  | $ | 2,723 |  |  | $ | 10,576 |  |  | $ | 4,562 |  |  | $ | 17,861 |

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