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Summary of Significant Accounting Policies - Summary of Estimated Useful Lives of Class of Asset (Detail)	12 Months Ended
	Dec. 31, 2021
Office and Electronic Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated Residual Value	5.00%
Office and Electronic Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Office and Electronic Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	5 years
Motor Vehicles [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	4 years
Estimated Residual Value	5.00%
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	Over the shorter of the expected life of leasehold improvements or the lease term
Estimated Residual Value	0.00%

X

- Definition

Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 35
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123364984&loc=d3e1205-110223

+ Details

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Balance Type:	na
Period Type:	duration

X

- 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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X

- Definition

Stated as a percentage, the estimated or actual value of the asset at the end of its useful life or when it is no longer serviceable (cannot be used for its original purpose) divided by its [historical] capitalized cost.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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X

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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X

- Details

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