Cryptocurrencies - Summary of the Adjusted Cost Basis of Cryptocurrencies (Detail) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Indefinite-Lived Intangible Assets [Line Items]
Impairment of cryptocurrencies					$ 0	$ 0
Cryptocurrencies [Member]
Indefinite-Lived Intangible Assets [Line Items]
Beginning balance	$ 441,000	$ 712,000	$ 402,000	$ 540,000	712,000	540,000
Purchase or receipts of cryptocurrency	121,874,000	108,094,000	153,351,000	127,537,000
Cost of cryptocurrencies sold or distributed	(119,675,000)	(106,303,000)	(150,552,000)	(125,488,000)
Impairment of cryptocurrencies	(2,040,000)	(2,062,000)	(2,390,000)	(2,187,000)	(4,100,000)	(4,600,000)
Ending Balance	600,000	441,000	811,000	402,000	600,000	811,000
Cryptocurrencies [Member] | Bitcoin [Member]
Indefinite-Lived Intangible Assets [Line Items]
Beginning balance	440,000	711,000	401,000	523,000	711,000	523,000
Purchase or receipts of cryptocurrency	121,874,000	108,094,000	153,351,000	127,530,000
Cost of cryptocurrencies sold or distributed	(119,675,000)	(106,303,000)	(150,552,000)	(125,465,000)
Impairment of cryptocurrencies	(2,040,000)	(2,062,000)	(2,390,000)	(2,187,000)
Ending Balance	599,000	440,000	810,000	401,000	599,000	810,000
Cryptocurrencies [Member] | Ethereum [Member]
Indefinite-Lived Intangible Assets [Line Items]
Beginning balance	1,000	1,000	1,000	9,000	1,000	9,000
Purchase or receipts of cryptocurrency				4,000
Cost of cryptocurrencies sold or distributed				(12,000)
Ending Balance	$ 1,000	$ 1,000	$ 1,000	1,000	$ 1,000	1,000
Cryptocurrencies [Member] | Litecoin [Member]
Indefinite-Lived Intangible Assets [Line Items]
Beginning balance				8,000		$ 8,000
Purchase or receipts of cryptocurrency				3,000
Cost of cryptocurrencies sold or distributed				$ (11,000)