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4. BITCOIN - Company's Bitcoin Holdings (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Sep. 30, 2024
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Common Domain Members [Abstract] |  |
Number Of Bitcoins Held | $ 10,075 | $ 6,819
Cost basis - per bitcoin | 94,058 | 55,408
Fair value - per bitcoin | 107,173 | 63,301
Cost basis of bitcoin (in '000s) | 947,625 | 377,839
Fair value of bitcoin (in '000s) | $ 1,079,754 | $ 431,661

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