Annual report pursuant to Section 13 and 15(d)

LONG-TERM DEBT, COMMON STOCK WARRANT LIABILITY, AND SUBSEQUENT EVENT - Senior Secured Notes Narrative (Details)

v3.20.4
LONG-TERM DEBT, COMMON STOCK WARRANT LIABILITY, AND SUBSEQUENT EVENT - Senior Secured Notes Narrative (Details) - USD ($)
$ in Millions
Feb. 12, 2021
Feb. 02, 2021
Dec. 31, 2020
Feb. 02, 2018
Senior Secured Notes Due 2024 | Senior Secured Notes        
Debt Instrument [Line Items]        
Percentage of prepayment Premium   0.90%    
Senior Secured Notes Due 2024 | Senior Secured Notes | Subsequent Event        
Debt Instrument [Line Items]        
Percentage of prepayment Premium   0.90%    
Senior Secured Notes Due 2024 | Senior Secured Notes        
Debt Instrument [Line Items]        
Face amount of borrowings       $ 100.0
Percentage of prepayment Premium     1.90%  
Senior Secured Notes Due 2028 | Senior Secured Notes | Subsequent Event        
Debt Instrument [Line Items]        
Face amount of borrowings $ 310.0      
Interest rate 8.25%      
Borrowed funds designated for contructing project $ 180.0      
Proceeds form the offering $ 8.0      
Redemption percentage 35.00%      
Percentage of redemption of equity offering 108.25%      
Percentage of redemption on accrued and unpaid interest 100.00%