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STARBOARD INVESTMENT - Series A and B Warrants (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 12 Months Ended
Nov. 18, 2019
Feb. 25, 2020
Dec. 31, 2021
Dec. 31, 2020
Jun. 04, 2020
Series B warrants          
Class of Warrant or Right [Line Items]          
Warrants and rights outstanding     $ 96.4 $ 52.3  
Starboard | Series A warrants          
Class of Warrant or Right [Line Items]          
Conversion price $ 3.65        
Warrants and rights outstanding $ 4.8   $ 11.3 $ 6.6  
Warrants exercised     0    
Number of shares purchased by warrant 5,000,000        
Starboard | Series B warrants          
Class of Warrant or Right [Line Items]          
Conversion price         $ 3.65
Warrants exercised     0    
Number of shares purchased by warrant   100,000,000      
Proceeds from issuance of preferred stock and preference stock   $ 4.6      
Class of Warrant or Right, Warrants Subject to Adjustments     31,506,849    
Class of Warrant or Right, Outstanding     68,493,151    
Starboard | Maximum | Series A warrants          
Class of Warrant or Right [Line Items]          
Warrants issued, shares 5,000,000        
Starboard | Maximum | Series B warrants          
Class of Warrant or Right [Line Items]          
Conversion price   $ 5.25      
Starboard | Minimum | Series B warrants          
Class of Warrant or Right [Line Items]          
Conversion price   $ 3.65