Quarterly report pursuant to Section 13 or 15(d)

Net (Loss) Income per Share Attributable to Common Stock - Antidilutive Securities (Details)

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Net (Loss) Income per Share Attributable to Common Stock - Antidilutive Securities (Details) - shares
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Stock option awards        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Common stock equivalents excluded from computation of diluted net loss per share attributable to common stock for the periods presented because their effect would have been anti-dilutive 43,996 37,130 43,966 37,130
Unvested restricted stock awards        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Common stock equivalents excluded from computation of diluted net loss per share attributable to common stock for the periods presented because their effect would have been anti-dilutive 529,997 214,329 529,997 214,329
Common stock warrants        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Common stock equivalents excluded from computation of diluted net loss per share attributable to common stock for the periods presented because their effect would have been anti-dilutive 240,100 240,100 240,100 240,100