Fair Value Measurements - Schedule of Changes in Carrying Amount of Digital Assets (Detail) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
Sep. 30, 2025 |
Mar. 31, 2025 |
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Goodwill and Intangible Assets Disclosure [Abstract] | ||||||
| Fair Value, Beginning Balance | $ 63,970 | $ 99,369 | $ 0 | $ 0 | ||
| Purchases of digital assets | 100,000 | |||||
| Change in fair value of digital assets - unrealized loss | (18,845) | (631) | $ 0 | (45,992) | $ 0 | |
| Realized loss upon transfer of digital assets as collateral | (2,626) | (1,964) | ||||
| Unrealized loss on digital assets | (14,330) | (24,552) | ||||
| Realized loss on sale of digital assets | (1,889) | |||||
| Digital assets transferred as collateral | (2,879) | (10,696) | ||||
| Digital assets returned by GSR Markets | 1,813 | 1,813 | $ 0 | |||
| Disposition of digital assets | (1,925) | |||||
| Fair Value, Ending Balance | $ 40,321 | $ 63,970 | $ 99,369 | $ 40,321 | ||