Annual report pursuant to Section 13 and 15(d)

RELATED PARTIES - Narrative (Details)

v3.20.4
RELATED PARTIES - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 12 Months Ended
Mar. 31, 2017
Jul. 31, 2016
Dec. 31, 2020
Dec. 31, 2019
Related Party Transaction [Line Items]        
Employee portion of payroll taxes     $ 0.2  
Restricted Stock Units (RSUs)        
Related Party Transaction [Line Items]        
Options vested (shares)       2,950,000,000
Former President and CEO        
Related Party Transaction [Line Items]        
Due from former President and CEO     6.4  
Accounts payable     0.4 $ 0.6
Former President and CEO | Accrued Liabilities        
Related Party Transaction [Line Items]        
Payroll taxes payable     6.2  
Accounts payable       0.4
Former President and CEO | Prepaid Expenses and Other Current Assets        
Related Party Transaction [Line Items]        
Due from former President and CEO     6.2  
Impairment charge related to previously recorded receivable     $ 6.2  
Former President and CEO | Other Noncurrent Liabilities        
Related Party Transaction [Line Items]        
Accounts payable       0.2
Former President and CEO | Selling, General and Administrative Expenses        
Related Party Transaction [Line Items]        
Payroll tax expense       $ 0.2
Former President and CEO | Stock options        
Related Party Transaction [Line Items]        
Stock option exercise period extension       5 years
Options vested (shares)     11,300,000  
Weighted average exercise price of outstanding vested options (USD per share)     $ 0.42  
Stock options issued (shares) 5,000,000 6,000,000    
Unvested stock options (shares)     6,750,000  
Stock based compensation expense       $ 2.7
Former President and CEO | Restricted Stock Units (RSUs)        
Related Party Transaction [Line Items]        
Stock based compensation expense       $ 5.1
Vested RSU's (shares)       2,950,000
Former Chief Operating Officer        
Related Party Transaction [Line Items]        
Accounts payable     $ 0.2 $ 0.7
Former Chief Operating Officer | Accrued Liabilities        
Related Party Transaction [Line Items]        
Accounts payable       0.4
Former Chief Operating Officer | Other Noncurrent Liabilities        
Related Party Transaction [Line Items]        
Accounts payable       0.2
Former Chief Operating Officer | Stock options        
Related Party Transaction [Line Items]        
Stock based compensation expense       $ 1.7