Quarterly report pursuant to Section 13 or 15(d)

Warrant Liability (Details)

v3.22.1
Warrant Liability (Details)
$ / shares in Units, $ in Thousands
3 Months Ended
Sep. 02, 2021
$ / shares
shares
Mar. 11, 2021
shares
Feb. 03, 2021
shares
Dec. 24, 2020
shares
Mar. 18, 2020
shares
Nov. 06, 2019
shares
Sep. 10, 2019
shares
Mar. 31, 2022
USD ($)
Y
$ / shares
shares
Mar. 31, 2021
USD ($)
Dec. 31, 2021
USD ($)
Dec. 27, 2021
$ / shares
Class of Warrant or Right [Line Items]                      
Outstanding at beginning of period               3,637,190      
Outstanding at end of period               3,637,190      
Warrants Fair value per share | $ / shares                     $ 5.50
Fair Value Adjustment of Warrants | $               $ 130 $ (6)    
Warrant Liability                      
Class of Warrant or Right [Line Items]                      
Outstanding at beginning of period               265,305      
Outstanding at end of period               265,305      
Warrants Fair value | $               449   318  
Change in fair value of warrant liability | $               $ 131      
Investor Private Placement Offering                      
Class of Warrant or Right [Line Items]                      
Warrants issued 22,019 34,286 7,429 7,286 44,286 114,286 35,715        
Warrants to purchase shares of common stock 308,571             1      
Warrants Fair value per share | $ / shares $ 5.25                    
Investor Private Placement Offering | Maximum                      
Class of Warrant or Right [Line Items]                      
Warrants Fair value per share | $ / shares                     $ 5.50
Investor Private Placement Offering | Exercise Price | Minimum                      
Class of Warrant or Right [Line Items]                      
Warrants Fair value | $ / shares               0.49      
Investor Private Placement Offering | Exercise Price | Maximum                      
Class of Warrant or Right [Line Items]                      
Warrants Fair value | $ / shares               5.25      
Investor Private Placement Offering | Time to Maturity (Years)                      
Class of Warrant or Right [Line Items]                      
Warrants Fair value | Y               3