Variable Interest Entities - Summary of Information about Variable Interests (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Carrying Amount - Assets
Total assets	$ 1,016,377	$ 1,037,860
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Carrying Amount - Assets
Total assets	19,832	13,988
Securrency Inc [Member]
Carrying Amount - Assets
Preferred stock – Series A Shares	8,488	8,488
Preferred stock – Series B Shares	5,500	5,500
Convertible note	5,844
Fnality International Limited [Member]
Carrying Amount - Assets
Equity Method Investments	6,195
Onramp Invest, LLC [Member]
Carrying Amount - Assets
Preferred stock – Series A Shares	312	250
Variable Interest Entity, Not Primary Beneficiary [Member]
Carrying Amount - Assets
Total assets	26,339	14,238
Maximum exposure to loss	$ 26,339	$ 14,238