Quarterly report pursuant to Section 13 or 15(d)

Organization and Description of Business Operations (Details)

v3.23.2
Organization and Description of Business Operations (Details)
$ / shares in Units, $ in Thousands
 1 Months Ended
Nov. 03, 2022
Vote
shares
Jul. 31, 2023
USD ($)
$ / shares
shares
May 31, 2023
USD ($)
$ / shares
shares
Apr. 30, 2023
USD ($)
$ / shares
shares
Feb. 28, 2023
USD ($)
$ / shares
shares
Jun. 30, 2023
USD ($)
Vote
multiplier
shares
Dec. 31, 2022
USD ($)
Organization and Description of Business Operations              
Reverse stock split, conversion ratio 0.1            
Number of votes per share | Vote           1  
Multiplier to calculate voting rights per class A common share 13.5         1.1  
Percentage of voting power held by shareholders who signed the written consent to effect a reverse stock split 58.00%            
Period after mailing of information statement to the common stockholders of record, that the reverse stock split will become effective 20 days            
Accumulated deficit | $           $ (289,481) $ (262,486)
Common Shares              
Organization and Description of Business Operations              
Number of shares held by shareholders who signed the written consent to effect a reverse stock split 10,914,552            
Number of votes per share | Vote 1            
February 2023 Registered Direct Offering              
Organization and Description of Business Operations              
Number of shares issued and sold         1,180,000    
Purchase price per share | $ / shares         $ 5.25    
Number of warrants issued         248,572    
Gross proceeds | $         $ 7,500    
Net proceeds from offering | $         6,700    
Amount of commissions and other transaction costs | $         $ 800    
February 2023 Registered Direct Offering | Pre-Funded Warrants              
Organization and Description of Business Operations              
Number of warrants issued         248,572    
Price of warrant | $ / shares         $ 5.2499    
February 2023 Registered Direct Offering | Series A warrants              
Organization and Description of Business Operations              
Expiration term of warrants (in years)         5 years    
Price of warrant | $ / shares         $ 5.00    
Number of warrants issued and sold to purchase shares         1,428,572    
February 2023 Registered Direct Offering | Series A warrants | Maximum              
Organization and Description of Business Operations              
Number of shares issued and sold         1,428,572    
February 2023 Registered Direct Offering | Series B warrants              
Organization and Description of Business Operations              
Expiration term of warrants (in years)         18 months    
Price of warrant | $ / shares         $ 5.00    
Number of warrants issued and sold to purchase shares         1,428,572    
February 2023 Registered Direct Offering | Series B warrants | Maximum              
Organization and Description of Business Operations              
Number of warrants issued and sold to purchase shares         1,428,572    
April 2023 Registered Direct Offering              
Organization and Description of Business Operations              
Number of shares issued and sold       1,700,000      
Purchase price per share | $ / shares       $ 3.60      
Gross proceeds | $       $ 6,100      
Net proceeds from offering | $       5,500      
Amount of commissions and other transaction costs | $       $ 600      
April 2023 Registered Direct Offering | Series A warrants              
Organization and Description of Business Operations              
Expiration term of warrants (in years)       5 years      
Price of warrant | $ / shares       $ 3.35      
Number of warrants issued and sold to purchase shares       1,700,000      
April 2023 Registered Direct Offering | Series A warrants | Maximum              
Organization and Description of Business Operations              
Number of warrants issued and sold to purchase shares       1,700,000      
April 2023 Registered Direct Offering | Series B warrants              
Organization and Description of Business Operations              
Expiration term of warrants (in years)       18 months      
Price of warrant | $ / shares       $ 3.35      
Number of warrants issued and sold to purchase shares       1,700,000      
April 2023 Registered Direct Offering | Series B warrants | Maximum              
Organization and Description of Business Operations              
Number of warrants issued and sold to purchase shares       1,700,000      
May 2023 Registered Direct Offering              
Organization and Description of Business Operations              
Number of shares issued and sold     1,650,000        
Purchase price per share | $ / shares     $ 3.071        
Number of warrants issued     1,606,269        
Price of warrant | $ / shares     $ 3.0709        
Gross proceeds | $     $ 10,000        
Net proceeds from offering | $     9,100        
Amount of commissions and other transaction costs | $     $ 900        
May 2023 Registered Direct Offering | Pre-Funded Warrants              
Organization and Description of Business Operations              
Number of warrants issued     1,606,269        
Price of warrant | $ / shares     $ 3.0709        
May 2023 Registered Direct Offering | Series A warrants              
Organization and Description of Business Operations              
Expiration term of warrants (in years)     5 years        
Price of warrant | $ / shares     $ 2.821        
May 2023 Registered Direct Offering | Series A warrants | Maximum              
Organization and Description of Business Operations              
Number of warrants issued and sold to purchase shares     3,256,269        
May 2023 Registered Direct Offering | Series B warrants              
Organization and Description of Business Operations              
Expiration term of warrants (in years)     18 months        
Price of warrant | $ / shares     $ 2.821        
Number of warrants issued and sold to purchase shares     3,256,269        
May 2023 Registered Direct Offering | Series B warrants | Maximum              
Organization and Description of Business Operations              
Number of warrants issued and sold to purchase shares     3,256,269        
July 2023 Registered Direct Offering | Subsequent Event              
Organization and Description of Business Operations              
Number of shares issued and sold   2,427,186          
Purchase price per share | $ / shares   $ 3.09          
Gross proceeds | $   $ 10,000          
Net proceeds from offering | $   9,100          
Amount of commissions and other transaction costs | $   $ 900          
July 2023 Registered Direct Offering | Pre-Funded Warrants | Subsequent Event              
Organization and Description of Business Operations              
Price of warrant | $ / shares   $ 3.0899          
Number of warrants issued and sold to purchase shares   809,062          
July 2023 Registered Direct Offering | Series A warrants | Subsequent Event              
Organization and Description of Business Operations              
Expiration term of warrants (in years)   5 years          
Price of warrant | $ / shares   $ 2.84          
July 2023 Registered Direct Offering | Series A warrants | Maximum | Subsequent Event              
Organization and Description of Business Operations              
Number of warrants issued and sold to purchase shares   3,236,248          
July 2023 Registered Direct Offering | Series B warrants | Subsequent Event              
Organization and Description of Business Operations              
Expiration term of warrants (in years)   18 months          
Price of warrant | $ / shares   $ 2.84          
July 2023 Registered Direct Offering | Series B warrants | Maximum | Subsequent Event              
Organization and Description of Business Operations              
Number of warrants issued and sold to purchase shares   3,236,248          
Class A Common Shares              
Organization and Description of Business Operations              
Number of shares held by shareholders who signed the written consent to effect a reverse stock split 7,000,000            
Number of votes per share | Vote 1.1            
2015 Incentive Plan              
Organization and Description of Business Operations              
Number of shares available for issuance authorized           6,000,000  
2015 Incentive Plan | Maximum              
Organization and Description of Business Operations              
Number of shares available for issuance authorized 3,000,000            
2015 Incentive Plan | Minimum              
Organization and Description of Business Operations              
Number of shares available for issuance authorized 900,000