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Investment - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Mar. 31, 2031	Dec. 31, 2029	Dec. 31, 2020
Investment [Line Items]
Cost of Investments	$ 14,238			$ 8,112
Unrealized gain on Series A Shares	(3,781)
Subsequent Event [Member]
Investment [Line Items]
Percentage of voting approval required to redeem all of the outstanding series a shares			60.00%
Percentage of voting approval required to redeem all of the outstanding series B shares		90.00%
Securrency Inc [Member]
Investment [Line Items]
Cost of Investments	$ 13,612
Ownership interest percentage	22.00%
Original fully diluted ownership interest percentage	18.00%
Securrency - Series A Preferred Stock [Member]
Investment [Line Items]
Number of shares purchased	5,178,488
Non-cumulative dividend	6.00%
Unrealized gain on Series A Shares	$ 376
Securrency - Series B Convertible Preferred Stock [Member]
Investment [Line Items]
Number of shares purchased	2,004,665
Onramp Invest, LLC [Member]
Investment [Line Items]
Cost of Investments	$ 250
Percentage of discount on future equity financing for preferred stock	20.00%

X

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Amount of investment in equity method investee and investment in and advance to affiliate.

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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

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