Quarterly report pursuant to Section 13 or 15(d)

BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Consolidated Balance Sheets (Details)

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BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Consolidated Balance Sheets (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]                
Accumulated depletion, depreciation, amortization and impairment $ (5,616,988)     $ (4,640,098)        
Property and equipment, net 5,030,958     5,479,405        
Deferred tax asset 323,378     0        
Total other assets 501,803     255,268        
Total assets 5,837,098     6,051,036        
Accumulated deficit (1,032,972)     (845,368)        
Total stockholders’ equity 3,123,104 $ 3,607,408 $ 3,368,266 3,327,768 $ 3,292,015 $ 3,195,199 $ 3,088,889 $ 3,101,614
Total liabilities and stockholders’ equity 5,837,098     6,051,036        
Capitalized costs of oil and natural gas properties excluded from amortization 2,260,759     $ 2,873,037        
As Reported                
Error Corrections and Prior Period Adjustments Restatement [Line Items]                
Accumulated depletion, depreciation, amortization and impairment (5,063,413)              
Property and equipment, net 5,584,533              
Deferred tax asset 205,853              
Total other assets 384,278              
Total assets 6,273,148              
Accumulated deficit (596,922)              
Total stockholders’ equity 3,559,154              
Total liabilities and stockholders’ equity 6,273,148              
Capitalized costs of oil and natural gas properties excluded from amortization 2,814,334              
Adjustments                
Error Corrections and Prior Period Adjustments Restatement [Line Items]                
Accumulated depletion, depreciation, amortization and impairment (553,575)              
Property and equipment, net (553,575)              
Deferred tax asset 117,525              
Total other assets 117,525              
Total assets (436,050)              
Accumulated deficit (436,050)              
Total stockholders’ equity (436,050)              
Total liabilities and stockholders’ equity (436,050)              
Capitalized costs of oil and natural gas properties excluded from amortization $ (553,575)