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Mezzanine Equity - Additional Information (Detail)	Dec. 31, 2019 $ / shares
Series Angel Redeemable Convertible Preferred Shares [Member]
Temporary Equity [Line Items]
Convertible preferred shares, par value per share	$ 0.0001
Series Pre A Redeemable Convertible Preferred Shares [Member]
Temporary Equity [Line Items]
Convertible preferred shares, par value per share	$ 0.0001

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

Per share amount of par value or stated value of stock classified as temporary equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section S99
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=122040564&loc=d3e177068-122764

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (27)
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Details

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- Details

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