XML 35 R21.htm IDEA: XBRL DOCUMENT
v3.21.2

Net Loss per Common Share (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2021
Earnings Per Share [Abstract] |
Summary of Anti-dilutive Securities Excluded from Computation of Diluted Net Loss per Common Share | The following common share equivalents were excluded from the computation of diluted net loss per common share for the periods presented because their inclusion would have been antidilutive:
|  | As of September 30, |
|  | 2021 |  |  | 2020 |
Outstanding stock options |  |  | 7,799,732 |  |  |  | 7,238,363 |
Unvested restricted shares |  |  | 412,287 |  |  |  | 363,195 |
Total |  |  | 8,212,019 |  |  |  | 7,601,558 |

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
Name: | us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration