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Share-Based Compensation - Schedule of BitAccess Plan Stock Option Activity (Detail) - Bit Access Plan [Member] - $ / shares | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Employee Stock Option [Member] |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Options - Beginning balance | 106,938 | 308,253 |
Options - Granted | 39,600 | 84,380 |
Options - Exercised | (68,058) | (240,195) |
Options - Forfeited | (33,600) | (45,500) |
Options - End balance | 44,880 | 106,938 | 308,253
Options - Vested | 11,038 | 1,719 |
Weighted-average exercise price - Beginning balance | $ 0.59 | $ 0 |
Weighted-average exercise price - Granted | 2.86 | 2.86 |
Weighted-average exercise price - Exercised | 0 | 0 |
Weighted-average exercise price - Forfeited | (2.86) | (2.86) |
Weighted-average exercise price - End balance | 2.86 | 0.59 | $ 0
Weighted-average exercise price - Vested | $ 2.86 | $ 2.86 |
Weighted-average remaining contractual term - Outstanding | 8 years 11 months 4 days | 8 years 8 months 23 days | 9 years 6 months 18 days
Weighted-average remaining contractual term - Granted | 9 years 9 months 3 days | 9 years 4 months 2 days |
Weighted-average grant-date fair value - Outstanding | $ 3.09 | $ 4.26 |
Weighted-average grant-date fair value - Granted | 3.05 | 3.1 |
Weighted-average grant-date fair value - Exercised | 4.44 | 4.44 |
Weighted-average grant-date fair value - Forfeited | (1.11) | (3.1) |
Weighted-average grant-date fair value - Vested | $ 3.1 | 3.02 |
Restricted Stock Units (RSUs) [Member] |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Weighted-average grant-date fair value - Outstanding |  | $ 4.26 | $ 4.44
Restricted stock units - Beginning balance | 81,142 | 237,600 |
Restricted stock units - Forfeited | (25,641) |  |
Restricted stock units - Exercised | (55,501) | (156,458) |
Restricted stock units - End balance |  | 81,142 | 237,600

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- Definition Line items represent financial concepts included in a table. 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