4. BITCOIN - Schedule of Activities of the Bitcoin (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2026 |
Mar. 31, 2025 |
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| Common Domain Members [Abstract] | ||||||||
| Beginning Balance - before cumulative effect change | $ 1,001,997 | $ 929,078 | $ 1,189,443 | $ 431,661 | ||||
| Addition of bitcoin from mining activities | [1] | 136,408 | 181,712 | 317,588 | 344,018 | |||
| Bitcoin purchased | (46,343) | 0 | (46,374) | 0 | ||||
| Bitcoin sold | (29,413) | (0) | (57,590) | 0 | ||||
| Bitcoin issued for services and other non-cash consideration | (47,661) | (3,488) | (48,373) | (6,903) | ||||
| Bitcoin transferred to collateral account | (87,034) | (0) | (611,333) | (8,860) | ||||
| Bitcoin received from collateral account | 16,688 | 0 | 448,051 | 129,180 | ||||
| (Loss) gain on fair value of bitcoin, net | (224,107) | (127,667) | (470,939) | 90,539 | ||||
| Ending Balance | [2] | $ 813,221 | $ 979,635 | $ 813,221 | $ 979,635 | |||
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