Annual report pursuant to Section 13 and 15(d)

STOCKHOLDERS EQUITY - Narrative (Details)

v3.22.1
STOCKHOLDERS EQUITY - Narrative (Details)
$ / shares in Units, $ in Millions
 12 Months Ended
Mar. 30, 2022
USD ($)
$ / shares
shares
Dec. 08, 2020
USD ($)
day
$ / shares
Dec. 31, 2021
USD ($)
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Class of Stock [Line Items]        
Common stock shares authorized (in shares)     190,000,000 190,000,000
Common stock par value (in USD per share) | $ / shares     $ 0.0001 $ 0.0001
Common stock shares issued (in shares)     112,482,000 100,664,000
Common stock shares outstanding (in shares)     112,482,000 100,664,000
Preferred stock, shares authorized (in shares)     10,000,000 10,000,000
Preferred stock, par value (in USD per share) | $ / shares     $ 0.0001 $ 0.0001
Preferred stock, shares issued (in shares)     0 0
Preferred stock, shares outstanding (in shares)     0 0
Subsequent Event        
Class of Stock [Line Items]        
Preferred stock, par value (in USD per share) | $ / shares $ 1,000      
Securities called by preferred stock and warrants (in shares) 10,000,000      
Conversion price (in dollars per share) | $ / shares $ 0.07      
Proceeds from issuance of preferred stock | $ $ 0.7      
Preferred Stock | Subsequent Event        
Class of Stock [Line Items]        
Stock issued during period (in shares) 700      
SPA        
Class of Stock [Line Items]        
Value of shares (up to) | $   $ 10.0    
Number of specified trading days between directions to purchase stock | day   3    
Fair value of put option (in USD per share) | $ / shares   $ 0    
Number of business days between issuance and settlement | day   1    
Common stock sold (in shares)     10,021,804 450,000
Proceeds recognized | $     $ 4.4 $ 0.2
Shares issued as commitment fee (in shares)     185,454  
Stock offering cost | $     $ 0.3  
Fair value of shares issued as commitment fee | $     $ 0.1