Quarterly report pursuant to Section 13 or 15(d)

FRESH START ACCOUNTING (Reorganization Adjustment to Retained Earnings (Accumulated Deficit)) (Details)

v3.21.2
FRESH START ACCOUNTING (Reorganization Adjustment to Retained Earnings (Accumulated Deficit)) (Details) - USD ($)
$ in Thousands
4 Months Ended 5 Months Ended
Sep. 30, 2021
May 17, 2021
Dec. 31, 2020
Reorganization, Chapter 11 [Line Items]      
Professional fees earned at Emergence $ 0 $ (81,565)  
Retained earnings (accumulated deficit) $ (670,899) 0 $ (4,472,859)
Extinguishment of Predecessor common stock and paid in capital      
Reorganization, Chapter 11 [Line Items]      
Retained earnings (accumulated deficit)   4,221,864  
Recognition of counterparty credits due to settlements effectuated at Emergence      
Reorganization, Chapter 11 [Line Items]      
Retained earnings (accumulated deficit)   4,247  
Deferred compensation earned at Emergence      
Reorganization, Chapter 11 [Line Items]      
Retained earnings (accumulated deficit)   (2,073)  
Extinguishment of Predecessor accumulated other comprehensive income      
Reorganization, Chapter 11 [Line Items]      
Retained earnings (accumulated deficit)   (40,430)  
Write-off of debt issuance costs related to First-Out Term Loan      
Reorganization, Chapter 11 [Line Items]      
Retained earnings (accumulated deficit)   (3,150)  
Severance costs incurred as a result of the Plan      
Reorganization, Chapter 11 [Line Items]      
Retained earnings (accumulated deficit)   (5,961)  
Rights offering backstop commitment fee      
Reorganization, Chapter 11 [Line Items]      
Retained earnings (accumulated deficit)   (5,000)  
Extinguishment of Predecessor stock-based compensation      
Reorganization, Chapter 11 [Line Items]      
Retained earnings (accumulated deficit)   (4,418)  
Reorganization Adjustments      
Reorganization, Chapter 11 [Line Items]      
Gain on settlement of liabilities subject to compromise   658,358  
Professional fees earned at Emergence   (18,047)  
Retained earnings (accumulated deficit)   $ 4,805,390