Annual report pursuant to Section 13 and 15(d)

SHARE-BASED COMPENSATION - Additional Information (Detail)

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SHARE-BASED COMPENSATION - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Gain on sale of securities $ 4,200,000 $ 5,100,000 $ 23,000,000.0
Unrecognized compensation expense $ 195,800,000    
Granted (in shares) 635,000    
Vested (in shares) 130,000    
Granted (in dollars per share) $ 8.53 $ 11.02 $ 9.59
Options granted (in shares) 0 0 2,000,000.0
Weighted average grant date fair value (in dollars per share)     $ 2.72
Options exercised (in shares) 7,000 0 0
Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (in years) 3 years    
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    
Granted (in shares) 24,600,000    
Vested (in shares) 600,000    
Total grant date fair value of restricted stock vested $ 1,200,000 $ 2,500,000 $ 3,700,000
Omnibus Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of common stock authorized for issuance 40,000,000    
First anniversary of FID | Restricted Stock, Restricted Stock Units (RSUs), and Phantom Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vested (in shares) 19,600,000    
Second anniversary of FID | Restricted Stock, Restricted Stock Units (RSUs), and Phantom Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vested (in shares) 4,400,000