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Significant Accounting Policies - Potentially Dilutive Securities Excluded from Computation of Diluted Weighted-Average Shares (Detail) - shares | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Anti-dilutive common stock equivalents outstanding excluded from diluted earnings per share calculation | 2,881,903 | 1,564,280
Stock options [Member] |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Anti-dilutive common stock equivalents outstanding excluded from diluted earnings per share calculation | 2,517,680 | 1,338,880
ESPP [Member] |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Anti-dilutive common stock equivalents outstanding excluded from diluted earnings per share calculation | 23,965 | 27,713
Warrants [Member] |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Anti-dilutive common stock equivalents outstanding excluded from diluted earnings per share calculation | 48,683 | 48,683
Restricted stock units [Member] |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Anti-dilutive common stock equivalents outstanding excluded from diluted earnings per share calculation | 291,575 | 149,004

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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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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