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Share-Based Payment Awards - Stock Options - Additional Information (Detail) - shares | 1 Months Ended | 12 Months Ended
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Jan. 31, 2019 | Dec. 31, 2021
2016 Long Term Incentive Plan [Member] |  |
Class Of Stock [Line Items] |  |
Ratable monthly vesting period | 4 years |
Contractual life of option grants | 10 years |
Stock Compensation Plan [Member] |  |
Class Of Stock [Line Items] |  |
Ratable monthly vesting period | 1 year |
Cliff vesting period | 3 years |
Common stock vested during the period |  | 297,361
Newly Appointed Non Executive Director [Member] |  |
Class Of Stock [Line Items] |  |
Ratable annual vesting period | 3 years |
External consultant [Member] |  |
Class Of Stock [Line Items] |  |
Cliff vesting period | 1 year |

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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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