Investments - Summary of Inputs Used in PWERM Approach of Investment (Detail) - Fair Value, Inputs, Level 3 [Member] - yr	9 Months Ended
	Sep. 30, 2022	Jun. 09, 2021	Mar. 08, 2021
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Time to potential outcome (in years)		4.75	5
Securrency Convertible Note [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Conversion of note upon a future equity financing	85.00%
Redemption of note upon a corporate transaction	10.00%
Default	5.00%
Time to potential outcome (in years)	0.25
Fnality Convertible Note [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Conversion of note upon a future financing round	85.00%
Redemption of note upon a change of control	10.00%
Default	5.00%
Time to potential outcome (in years)	0.25