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BORROWINGS - Notes (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2023
January 2026 Notes | Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest expense | $ 1,208 | $ 1,575 | $ 4,358 | $ 4,725
Amortization of deferred financing costs | 56 | 84 | 224 | 253
Total interest and amortization of deferred financing costs | $ 1,264 | $ 1,659 | $ 4,582 | $ 4,978
Weighted average effective interest rate | 4.46% | 4.46% | 4.46% | 4.46%
Average borrowings | $ 140,000 | $ 140,000 | $ 140,000 | $ 140,000
October 2026 Notes | Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest expense | 1,266 | 1,266 | 3,797 | 3,797
Amortization of deferred financing costs | 192 | 251 | 577 | 621
Total interest and amortization of deferred financing costs | $ 1,458 | $ 1,517 | $ 4,374 | $ 4,418
Weighted average effective interest rate | 3.50% | 3.50% | 3.50% | 3.50%
Average borrowings | $ 150,000 | $ 150,000 | $ 150,000 | $ 150,000
August 2028 Notes | Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest expense | 1,393 | 1,393 | 4,178 | 3,033
Amortization of deferred financing costs | 127 | 127 | 382 | 296
Total interest and amortization of deferred financing costs | $ 1,520 | $ 1,520 | $ 4,560 | $ 3,329
Weighted average effective interest rate | 7.75% | 7.75% | 7.75% | 7.75%
Average borrowings | $ 71,875 | $ 71,875 | $ 71,875 | $ 71,875
2029 Convertible Notes | Convertible Debt |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest expense | 1,703 | 0 | 1,703 | 0
Amortization of deferred financing costs | 243 | 0 | 243 | 0
Total interest and amortization of deferred financing costs | $ 1,946 | $ 0 | $ 1,946 | $ 0
Weighted average effective interest rate | 5.13% | 0.00% | 5.13% | 0.00%
Average borrowings | $ 230,000 | $ 0 | $ 230,000 | $ 0

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