Deposits - Schedule of deposits (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2025 |
Mar. 31, 2025 |
|
| Deposits [Line Items] | ||
| Deposits, gross | $ 131,329 | $ 87,018 |
| Equipment deposit provision, opening | (12,131) | (12,131) |
| Equipment deposit provision, reclassed | 0 | 0 |
| Equipment deposit provision | (12,131) | (12,131) |
| Deposits, net | 119,198 | 74,887 |
| ANDE [Member] | ||
| Deposits [Line Items] | ||
| Deposits, gross | 22,472 | 6,524 |
| Bodens Energi [Member] | ||
| Deposits [Line Items] | ||
| Deposits, gross | 290 | 274 |
| Atnorth [Member] | ||
| Deposits [Line Items] | ||
| Deposits, gross | 329 | 310 |
| Equipment deposits [Member] | ||
| Deposits [Line Items] | ||
| Deposits, gross | 106,533 | 78,647 |
| Vattenfall AB [Member] | ||
| Deposits [Line Items] | ||
| Deposits, gross | 1,338 | 1,263 |
| Brattys LLP [Member] | ||
| Deposits [Line Items] | ||
| Deposits, gross | $ 367 | $ 0 |