Quarterly report pursuant to Section 13 or 15(d)

Capitalization and Equity Structure - Warrants (Details)

v3.22.2
Capitalization and Equity Structure - Warrants (Details) - $ / shares
shares in Thousands
 1 Months Ended 2 Months Ended 6 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Feb. 28, 2021
Jun. 30, 2022
Sep. 30, 2020
May 31, 2019
Class Of Warrant Or Right, Outstanding [Roll Forward]            
Beginning balance (in shares)       1,240    
Warrants issued (in shares)       0    
Exercised (in shares)       0    
Ending balance (in shares)       1,240    
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 0    
Exercised (in shares)       0    
Ending balance (in shares)     273 273    
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    
Warrants issued (in shares)       0    
Exercised (in shares)       0    
Ending balance (in shares) 874     127    
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    
Warrants issued (in shares) 122     0    
Exercised (in shares)       0    
Ending balance (in shares)       39    
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    
Warrants issued (in shares)       0    
Exercised (in shares)       0    
Ending balance (in shares)   556   556    
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    
Warrants issued (in shares)       0    
Exercised (in shares)       0    
Ending balance (in shares)   52   52    
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    
Warrants issued (in shares)       0    
Exercised (in shares)       0    
Ending balance (in shares)       193