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Revenue, Other Income and Other Gain - Schedule of Amount of Revenue Recognized (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disclosure of Analysis of Revenue [Line Items]
Revenue recognized	$ 895	$ 81	$ 6,000
Capital Market Solutions [Member]
Disclosure of Analysis of Revenue [Line Items]
Revenue recognized		$ 81	$ 6,000
Digital Solutions And Other Services [Member]
Disclosure of Analysis of Revenue [Line Items]
Revenue recognized	$ 895

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Disclosure of analysis of revenue line Item.

+ References

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479837/606-10-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-8

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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-Section 45
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