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Stock-Based Compensation - Summary of Assumptions Used for Valuation of Fair Value of Stock (Detail) - Black-Scholes Option-Pricing Model [Member] | 9 Months Ended
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Sep. 30, 2022 | Sep. 30, 2021
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Expected volatility | 90.00% | 90.00%
Expected dividend yield | 0.00% | 0.00%
Minimum [Member] |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Risk-free interest rate, minimum | 1.71% | 0.40%
Expected term in years | 5 years 9 months 18 days | 5 years 3 months 18 days
Maximum [Member] |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Risk-free interest rate, maximum | 4.17% | 1.10%
Expected term in years | 6 years 1 month 6 days | 6 years 1 month 6 days

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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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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The maximum risk-free interest rate assumption that is used in valuing an option on its own shares. + References No definition available. + Details
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- Definition The minimum risk-free interest rate assumption that is used in valuing an option on its own shares. + References No definition available. + Details
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- Definition Rate of weighted-average expected volatility for award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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