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Debt - Total Interest Expense Recognized Related to Convertible Notes (Details) - Convertible Notes [Member] - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Interest expense on Convertible Notes |  |  |  |
Contractual interest expense | $ 968,000 | $ 880,000 | $ 1,936,000 | $ 1,760,000
Accretion of debt discount | 299,000 | 249,000 | 584,000 | 487,000
Amortization of debt issuance costs | 41,000 | 35,000 | 82,000 | 68,000
Total interest expense on Convertible Notes | $ 1,308,000 | $ 1,164,000 | $ 2,602,000 | $ 2,315,000

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