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CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDER'S EQUITY (DEFICIT) - USD ($)
$ in Thousands
Series A convertible preferred stock
Series A-1 convertible preferred stock
Series A-2 convertible preferred stock
Series B convertible preferred stock
Series B-1 convertible preferred stock
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Accumulated Other Comprehensive Loss
Total
Beginning Balances at Dec. 31, 2020           $ 1 $ 222 $ (68,220) $ (187) $ (68,184)
Beginning Balances (in shares) at Dec. 31, 2020           538,793        
Shareholders' Equity                    
Exercise of stock options             14     14
Exercise of stock options (in shares)           20,787        
Equity-based compensation             98     98
Other comprehensive loss                 (5) (5)
Net loss               223   223
Ending Balances at Mar. 31, 2021           $ 1 334 (67,997) (192) (67,854)
Ending Balances (in shares) at Mar. 31, 2021           559,580        
Beginning Balances at Dec. 31, 2020 $ 4,616 $ 5,398 $ 5,809 $ 39,547            
Beginning Balances (in shares) at Dec. 31, 2020 2,819,027 3,730,366 3,565,063 30,409,890            
Ending Balances at Mar. 31, 2021 $ 4,616 $ 5,398 $ 5,809 $ 39,547            
Ending Balances (in shares) at Mar. 31, 2021 2,819,027 3,730,366 3,565,063 30,409,890            
Beginning Balances at Dec. 31, 2020           $ 1 222 (68,220) (187) $ (68,184)
Beginning Balances (in shares) at Dec. 31, 2020           538,793        
Shareholders' Equity                    
Exercise of stock options (in shares)                   25,783
Net loss                   $ (4,377)
Ending Balances at Sep. 30, 2021           $ 1 142 (86,665) (196) (86,718)
Ending Balances (in shares) at Sep. 30, 2021           615,907        
Beginning Balances at Dec. 31, 2020 $ 4,616 $ 5,398 $ 5,809 $ 39,547            
Beginning Balances (in shares) at Dec. 31, 2020 2,819,027 3,730,366 3,565,063 30,409,890            
Ending Balances at Sep. 30, 2021 $ 4,616 $ 5,398 $ 5,809 $ 39,547 $ 29,391          
Ending Balances (in shares) at Sep. 30, 2021 2,819,027 3,730,366 3,565,063 30,409,890 10,926,089          
Beginning Balances at Mar. 31, 2021           $ 1 334 (67,997) (192) (67,854)
Beginning Balances (in shares) at Mar. 31, 2021           559,580        
Shareholders' Equity                    
Exercise of common stock warrants             34     34
Exercise of common stock warrants (in shares)           50,497        
Equity-based compensation             94     94
Issuance of Series B-1 convertible preferred stock upon conversion of debt             (397) (14,068)   (14,465)
Other comprehensive loss                 (1) (1)
Net loss               (1,490)   (1,490)
Ending Balances at Jun. 30, 2021           $ 1 65 (83,555) (193) (83,682)
Ending Balances (in shares) at Jun. 30, 2021           610,077        
Beginning Balances at Mar. 31, 2021 $ 4,616 $ 5,398 $ 5,809 $ 39,547            
Beginning Balances (in shares) at Mar. 31, 2021 2,819,027 3,730,366 3,565,063 30,409,890            
Temporary equity                    
Issuance of Series B-1 Convertible Preferred Stock upon conversion of debt         $ 29,391          
Issuance of Series B-1 Convertible Preferred Stock upon conversion of debt (in shares)         10,926,089          
Ending Balances at Jun. 30, 2021 $ 4,616 $ 5,398 $ 5,809 $ 39,547 $ 29,391          
Ending Balances (in shares) at Jun. 30, 2021 2,819,027 3,730,366 3,565,063 30,409,890 10,926,089          
Shareholders' Equity                    
Exercise of common stock warrants (in shares)           834        
Exercise of stock options             5     $ 5
Exercise of stock options (in shares)           4,996       4,996
Equity-based compensation             72     $ 72
Other comprehensive loss                 (3) (3)
Net loss               (3,110)   (3,110)
Ending Balances at Sep. 30, 2021           $ 1 142 (86,665) (196) (86,718)
Ending Balances (in shares) at Sep. 30, 2021           615,907        
Ending Balances at Sep. 30, 2021 $ 4,616 $ 5,398 $ 5,809 $ 39,547 $ 29,391          
Ending Balances (in shares) at Sep. 30, 2021 2,819,027 3,730,366 3,565,063 30,409,890 10,926,089          
Beginning Balances at Dec. 31, 2021           $ 22 145,453 (94,004) (198) 51,273
Beginning Balances (in shares) at Dec. 31, 2021           22,230,032        
Shareholders' Equity                    
Exercise of stock options             303     303
Exercise of stock options (in shares)           348,552        
Equity-based compensation             1,001     1,001
Other comprehensive loss                 1 1
Net loss               (3,838)   (3,838)
Ending Balances at Mar. 31, 2022           $ 22 146,757 (97,842) (197) 48,740
Ending Balances (in shares) at Mar. 31, 2022           22,578,584        
Beginning Balances at Dec. 31, 2021           $ 22 145,453 (94,004) (198) $ 51,273
Beginning Balances (in shares) at Dec. 31, 2021           22,230,032        
Shareholders' Equity                    
Exercise of stock options (in shares)                   1,739,465
Net loss                   $ (16,215)
Ending Balances at Sep. 30, 2022           $ 24 149,716 (110,219) (201) 39,320
Ending Balances (in shares) at Sep. 30, 2022           23,969,497        
Beginning Balances at Mar. 31, 2022           $ 22 146,757 (97,842) (197) 48,740
Beginning Balances (in shares) at Mar. 31, 2022           22,578,584        
Shareholders' Equity                    
Exercise of stock options             22     22
Exercise of stock options (in shares)           19,323        
Equity-based compensation             892     892
Other comprehensive loss                 (3) (3)
Net loss               (5,752)   (5,752)
Ending Balances at Jun. 30, 2022           $ 22 147,671 (103,594) (200) 43,899
Ending Balances (in shares) at Jun. 30, 2022           22,597,907        
Shareholders' Equity                    
Exercise of stock options           $ 2 1,268     $ 1,270
Exercise of stock options (in shares)           1,371,590       1,371,589
Equity-based compensation             777     $ 777
Other comprehensive loss                 (1) (1)
Net loss               (6,625)   (6,625)
Ending Balances at Sep. 30, 2022           $ 24 $ 149,716 $ (110,219) $ (201) $ 39,320
Ending Balances (in shares) at Sep. 30, 2022           23,969,497