Annual report pursuant to Section 13 and 15(d)

SHARE-BASED COMPENSATION - Additional Information (Details)

v3.20.4
SHARE-BASED COMPENSATION - Additional Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation $ 2,699,000 $ 4,238,000 $ 5,126,000
Number of awards outstanding (in shares) 34,961,000 24,625,000  
Unrecognized compensation expense $ 203,200,000    
Options granted (in shares) 10,000,000 0 0
Options exercised (in shares) 0 7,000 0
2016 Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of common stock authorized for issuance 40,000,000    
Performance-Based Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of awards outstanding (in shares) 29,600,000    
Performance-Based Restricted Stock | FID | Second anniversary of FID      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of awards outstanding (in shares) 9,600,000    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 33.33%    
Performance-Based Restricted Stock | Other Criteria      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of awards outstanding (in shares) 700,000    
Restricted Stock, Restricted Stock Units (RSUs), and Phantom Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Gain on sale of securities $ 0    
Total grant date fair value of restricted stock vested $ 11,700,000 $ 1,200,000 $ 2,500,000
Restricted Stock, Restricted Stock Units (RSUs), and Phantom Units | First anniversary of FID      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of awards outstanding (in shares) 19,300,000    
Time Based Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of awards outstanding (in shares) 5,400,000    
Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Antidilutive securities excluded from computation of loss per share amount (in shares) 35,000,000.0    
Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Antidilutive securities excluded from computation of loss per share amount (in shares) 11,400,000