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Fair Value Measurements - Additional Information (Detail) - USD ($)		9 Months Ended		12 Months Ended
	Jul. 31, 2023	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Present value discount rate
Fair value, net asset (liability)		$ 0		$ 0
Impairment of goodwill		0	$ 0
Impairment of intangible assets, indefinite-lived		0	0
Operating lease, impairment loss		0	$ 0
Notes payable		18,716,000		37,572,000
Fixed Rated Note [Member]
Present value discount rate
Notes payable		18,700,000
Fixed Rated Note [Member] | Estimate of Fair Value Measurement [Member]
Present value discount rate
Fair value of the fixed-rated note		$ 19,600,000
Bit Access [Member]
Present value discount rate
Payments to acquire businesses	$ 2,000,000			$ 2,000,000

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Fair value of asset after deduction of liability.

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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Amount of loss from impairment of right-of-use asset from operating lease.

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