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Share-Based Compensation - Summary of Stock Option Activity (Detail) | 12 Months Ended
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Dec. 31, 2021 shares
Number of Shares |
Outstanding as of December 31, 2020 | 3,682,233
Granted | 1,708,709
Exercised | (160,674)
Forfeited or cancelled | (339,552)
Outstanding as of December 31, 2021 | 4,890,716
2017 Plan [Member] |
Number of Shares |
Outstanding as of December 31, 2020 | 3,137,233
Granted | 1,161,309
Exercised | (140,537)
Forfeited or cancelled | (264,400)
Outstanding as of December 31, 2021 | 3,893,605
2019 Inducement Plan [Member] |
Number of Shares |
Outstanding as of December 31, 2020 | 545,000
Granted | 547,400
Exercised | (20,137)
Forfeited or cancelled | (75,152)
Outstanding as of December 31, 2021 | 997,111

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- Definition For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. + 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 (c)(1)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + 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 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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