Annual report pursuant to Section 13 and 15(d)

2020 SEVERANCE AND REORGANIZATION (Details)

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2020 SEVERANCE AND REORGANIZATION (Details)
 1 Months Ended 12 Months Ended
Jul. 31, 2020
USD ($)
numberOfInstallment
$ / shares
Dec. 31, 2021
USD ($)
numberOfInstallment
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Restructuring and Related Activities [Abstract]        
Severance and reorganization charges | $   $ 0 $ 6,359,000 $ 0
Employee retention plan pool | $ $ 12,000,000      
Employee retention plan, number of vesting installments | numberOfInstallment 4      
Employee retention plan, target measurement period 10 days      
Employee retention plan, stock performance targets, stock price one (in USD per share) | $ / shares $ 2.25      
Employee retention plan, stock performance targets, stock price two (in USD per share) | $ / shares 3.25      
Employee retention plan, stock performance targets, stock price three (in USD per share) | $ / shares 4.25      
Employee retention plan, stock performance targets, stock price four (in USD per share) | $ / shares $ 5.25      
Employee retention plan, payable period 12 months      
Employee retention plan, number of vesting installments, vested | numberOfInstallment   3    
Employee retention plan charges | $   $ 7,900,000    
Employee retention plan, expected future payment | $   $ 3,700,000