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Investments - Details of Investments Carried at Cost (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Investment [Line Items]
Investments	$ 40,002	$ 35,721
Investments - Carrying Value [Member]
Investment [Line Items]
Investments	40,002	35,721
Investments - Cost [Member]
Investment [Line Items]
Investments	45,725	35,725
Securrency Inc. - Series A Convertible Preferred Stock - Carrying Value [Member]
Investment [Line Items]
Investments	3,588	8,488
Securrency Inc. - Series A Convertible Preferred Stock - Cost [Member]
Investment [Line Items]
Investments	8,112	8,112
Securrency Inc. - Series B Convertible Preferred Stock - Carrying Value [Member]
Investment [Line Items]
Investments	5,500	5,500
Securrency Inc. - Series B Convertible Preferred Stock - Cost [Member]
Investment [Line Items]
Investments	5,500	5,500
Securrency, Inc.—Secured Convertible Note - Carrying Value [Member]
Investment [Line Items]
Investments	8,887	0
Securrency, Inc.—Secured Convertible Note - Cost [Member]
Investment [Line Items]
Investments	10,000	0
Securrency, Inc.—Convertible Note Carrying Value [Member]
Investment [Line Items]
Investments	13,836	14,500
Securrency, Inc.—Convertible Note Cost [Member]
Investment [Line Items]
Investments	15,000	15,000
Subtotal – Securrency, Inc. - Carrying Value [Member]
Investment [Line Items]
Investments	31,811	28,488
Subtotal – Securrency, Inc. - Cost [Member]
Investment [Line Items]
Investments	38,612	28,612
Fnality International Limited Convertible Note Carrying Value [Member]
Investment [Line Items]
Investments	7,879	6,921
Fnality International Limited Convertible Note Cost [Member]
Investment [Line Items]
Investments	6,863	6,863
Other InvestmentsCarrying Value [Member]
Investment [Line Items]
Investments	312	312
Other Investments Cost [Member]
Investment [Line Items]
Investments	$ 250	$ 250

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(18))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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+ References

No definition available.

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