Quarterly report pursuant to Section 13 or 15(d)

Capitalization and Equity Structure - Warrants (Details)

v3.22.2.2
Capitalization and Equity Structure - Warrants (Details) - $ / shares
 1 Months Ended 2 Months Ended 9 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Feb. 28, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2020
May 31, 2019
Class Of Warrant Or Right, Outstanding [Roll Forward]              
Beginning balance (in shares)       1,240,000      
Warrants issued (in shares)       0      
Exercised (in shares)       0      
Ending balance (in shares)       1,240,000      
2021 Warrants              
Schedule of Capitalization, Equity [Line Items]              
Exercise price (in dollars per share)     $ 12.81 $ 12.81      
Term (Years)     5 years 5 years      
Class Of Warrant Or Right, Outstanding [Roll Forward]              
Warrants issued (in shares)     273,000 0      
Exercised (in shares)       0      
Ending balance (in shares)     273,000 273,000      
June 2020 Investor Warrants              
Schedule of Capitalization, Equity [Line Items]              
Exercise price (in dollars per share)       $ 5.18   $ 5.18  
Term (Years)       5 years 6 months      
Class Of Warrant Or Right, Outstanding [Roll Forward]              
Beginning balance (in shares)       127,000      
Warrants issued (in shares)       0      
Exercised (in shares)       0 270,000    
Ending balance (in shares) 874,000     127,000      
June 2020 Placement Agent Warrants              
Schedule of Capitalization, Equity [Line Items]              
Exercise price (in dollars per share)           5.64  
Term (Years)       5 years      
Class Of Warrant Or Right, Outstanding [Roll Forward]              
Beginning balance (in shares)       39,000      
Warrants issued (in shares) 122,000     0      
Exercised (in shares)       0 83,000    
Ending balance (in shares)       39,000      
December 2019 Warrants              
Schedule of Capitalization, Equity [Line Items]              
Exercise price (in dollars per share)   $ 8.10   $ 8.10      
Term (Years)   5 years   5 years      
Class Of Warrant Or Right, Outstanding [Roll Forward]              
Beginning balance (in shares)       556,000      
Warrants issued (in shares)       0      
Exercised (in shares)       0      
Ending balance (in shares)   556,000   556,000      
December 2019 Placement Agent Warrants              
Schedule of Capitalization, Equity [Line Items]              
Exercise price (in dollars per share)   $ 8.44   $ 8.44      
Term (Years)       5 years      
Class Of Warrant Or Right, Outstanding [Roll Forward]              
Beginning balance (in shares)       52,000      
Warrants issued (in shares)       0      
Exercised (in shares)       0      
Ending balance (in shares)   52,000   52,000      
May 2019 Warrants              
Schedule of Capitalization, Equity [Line Items]              
Exercise price (in dollars per share)       $ 3.52   $ 3.52 $ 3.52
Term (Years)       5 years      
Class Of Warrant Or Right, Outstanding [Roll Forward]              
Beginning balance (in shares)       193,000      
Warrants issued (in shares)       0      
Exercised (in shares)       0 5,000    
Ending balance (in shares)       193,000