Consolidated Statement of Changes in Convertible Preferred Stock and Stockholders' Equity (Deficit) - USD ($)
$ in Thousands
Total
Convertible Preferred Stock [Member]
Common Stock [Member]
Preferred Stock [Member]
Convertible Preferred Stock [Member]
Additional Paid-in Capital [Member]
Treasury Stock [Member]
Note Receivable [Member]
Accumulated Deficit [Member]
Total [Member]
Beginning Balance at Dec. 31, 2019 $ (60,361)   $ 4 $ 136,797 $ 2,008 $ (624) $ (170) $ (61,579) $ 76,436
Beginning Balance, Shares at Dec. 31, 2019   107,452,541 37,385,121     233,007      
Exercise of common stock options 1,131   $ 2,124,987       170 961 1,131
Stock-based compensation expense 2,569             2,569 2,569
Exercise of Series D warrants   $ 700             $ 700
Exercise of Series D warrants, Shares   140,260              
Repurchase of common stock upon reverse recapitalization $ (826)                
Repurchase of common stock upon reverse recapitalization, Shares (826)         250,472     (826)
Net loss and comprehensive loss $ (17,985)             (17,985) $ (17,985)
Ending Balance at Dec. 31, 2020 (75,472)   $ 4 137,497 5,538 $ (1,450)   (79,564) 62,025
Ending Balance, Shares at Dec. 31, 2020   107,592,801 39,510,108     483,479      
Exercise of common stock options 1,967             1,967 1,967
Exercise of common stock options, Shares     2,020,709            
Stock-based compensation expense $ 11,881             11,881 11,881
Exercise of Series D warrants   $ 550             550
Exercise of Series D warrants, Shares   110,212              
Stock vested under compensation plan, shares 106,800                
Exercise of common stock warrants $ 1,793             1,793 1,793
Exercise of common stock warrants, Shares     179,572            
Conversion of convertible preferred stock into common stock upon reverse recapitalization, converted 138,047 $ (138,047) $ 11         138,036  
'Conversion of convertible preferred stock into common stock upon reverse recapitalization, converted, Shares   (107,703,013) 107,703,013            
Retirement of treasury stock upon reverse recapitalization           $ 1,450   (1,450)  
Retirement of treasury stock upon reverse recapitalization, Shares     (483,479)     (483,479)      
Repurchase of common stock upon reverse recapitalization (45,000)             (45,000) (45,000)
Repurchase of common stock upon reverse recapitalization, Shares     (4,499,998)            
Issuance of common stock upon the reverse recapitalization, net of transaction costs 113,178   $ 2         113,176 113,178
Issuance of common stock upon the reverse recapitalization, net of transaction costs, Shares     20,456,333            
Issuance of common stock related to PIPE Investment 210,000   $ 2         209,998 210,000
Issuance of common stock related to PIPE Investment, Shares     21,000,000            
Recognition of derivative liability related to earnout (123,129)             (123,129) (123,129)
Earnout stock-based compensation expense 7,049             7,049 7,049
Net loss and comprehensive loss 3,855             3,855 3,855
Ending Balance at Dec. 31, 2021 $ 244,169   $ 19 $ 0 $ 319,859 $ 0 $ 0 $ (75,709) $ 244,169
Ending Balance, Shares at Dec. 31, 2021     185,993,058 0   0