Net Loss Per Share - Anti-dilutive Securities (Details) - $ / shares |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Jan. 31, 2021 |
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| Anti-dilutive securities | |||
| Weighted average number of shares issuable (in shares) | 1,676,923 | ||
| Exercise price per share (in dollars per share) | $ 0.001 | $ 0.001 | |
| Pre-funded warrants exercised (in shares) | 308,880 | ||
| Nantahala | |||
| Anti-dilutive securities | |||
| Warrants outstanding (in shares) | 1,368,043 | ||
| Stock options | |||
| Anti-dilutive securities | |||
| Anti- dilutive securities excluded from the computation of diluted weighted shares outstanding (in shares) | 13,650,978 | 9,830,674 | |
| Warrants on common stock | |||
| Anti-dilutive securities | |||
| Anti- dilutive securities excluded from the computation of diluted weighted shares outstanding (in shares) | 4,406,224 | 4,002,380 | |
| Restricted Stock Units | |||
| Anti-dilutive securities | |||
| Anti- dilutive securities excluded from the computation of diluted weighted shares outstanding (in shares) | 11,250 | 155,833 | |
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- Definition Class Of Warrant Or Right Number Of Securities Called By WarrantsOr Rights Exercised No definition available.
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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. No definition available.
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- Definition Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of warrants or rights outstanding. No definition available.
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- Definition Shares issuable for little or no cash consideration upon the satisfaction of certain conditions (contingently issuable shares) are considered outstanding common shares and included in the computation of basic Earnings Per Share as of the date that all necessary conditions have been satisfied (in essence, when issuance of the shares is no longer contingent). Outstanding common shares that are contingently returnable (that is, subject to recall) are treated in the same manner as contingently issuable shares. Contingently issuable shares include shares that (a) will be issued in the future upon the satisfaction of specified conditions, (b) have been placed in escrow and all or part must be returned if specified conditions are not met, or (c) have been issued but the holder must return all or part if specified conditions are not met. The number of contingently issuable shares is determined by relating the portion of time within a reporting period that these shares have been outstanding to the total time in that period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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