Quarterly report pursuant to Section 13 or 15(d)

BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Consolidated Statements of Stockholders' Equity (Details)

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BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Consolidated Statements of Stockholders' Equity (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Dec. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]                    
Net loss $ (484,802) $ 234,956 $ 62,242 $ 95,150 $ 111,319 $ 90,090 $ (187,604) $ 296,559    
Total stockholders’ equity 3,123,104 3,607,408 3,368,266 3,292,015 3,195,199 3,088,889 3,123,104 3,292,015 $ 3,327,768 $ 3,101,614
Accumulated Deficit                    
Error Corrections and Prior Period Adjustments Restatement [Line Items]                    
Net loss (484,802) 234,956 62,242 95,150 111,319 90,090        
Total stockholders’ equity (1,032,972) $ (548,170) $ (783,126) $ (979,369) $ (1,074,519) $ (1,185,838) (1,032,972) $ (979,369) $ (845,368) $ (1,275,928)
As Reported                    
Error Corrections and Prior Period Adjustments Restatement [Line Items]                    
Net loss (48,752)           248,446      
Total stockholders’ equity 3,559,154           3,559,154      
As Reported | Accumulated Deficit                    
Error Corrections and Prior Period Adjustments Restatement [Line Items]                    
Net loss (48,752)                  
Total stockholders’ equity (596,922)           (596,922)      
Adjustments                    
Error Corrections and Prior Period Adjustments Restatement [Line Items]                    
Net loss (436,050)           (436,050)      
Total stockholders’ equity (436,050)           (436,050)      
Adjustments | Accumulated Deficit                    
Error Corrections and Prior Period Adjustments Restatement [Line Items]                    
Net loss (436,050)                  
Total stockholders’ equity $ (436,050)           $ (436,050)