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Cash and Cash Equivalents, As well As Restricted, Cash in Bank Accounts Jurisdictions of Major Financial Institutions (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents and Restricted cash	$ 41,761	$ 46,002
Taiwan
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents and Restricted cash	41,182	42,040
Hong Kong
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents and Restricted cash	564	3,946
China
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents and Restricted cash	$ 15	$ 16

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- Definition

Cash and cash equivalents, at carrying value, including restricted cash and discontinued operations.

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No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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- Details

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