Annual report pursuant to Section 13 and 15(d)

LONG-TERM DEBT, COMMON STOCK WARRANT LIABILITY, AND SUBSEQUENT EVENT - Prior Notes and Waivers (Details)

v3.20.4
LONG-TERM DEBT, COMMON STOCK WARRANT LIABILITY, AND SUBSEQUENT EVENT - Prior Notes and Waivers (Details) - Senior Secured Notes Due 2024 - USD ($)
$ in Millions
May 10, 2019
Feb. 02, 2018
Feb. 02, 2021
Dec. 31, 2020
Senior Secured Notes        
Debt Instrument [Line Items]        
Percentage of prepayment Premium     0.90%  
Senior Secured Notes | Subsequent Event        
Debt Instrument [Line Items]        
Percentage of prepayment Premium     0.90%  
Senior Secured Notes        
Debt Instrument [Line Items]        
Face amount of borrowings   $ 100    
Additional aggregate principal amount $ 10      
Applicable margin rate   7.00%    
Percentage of prepayment Premium       1.90%
Senior Secured Notes | LIBOR        
Debt Instrument [Line Items]        
Applicable margin rate   1.00%