Quarterly report pursuant to Section 13 or 15(d)

Acquisitions??and Divestitures (Narrative - Acquisitions) (Details)

v3.20.2
Acquisitions and Divestitures (Narrative - Acquisitions) (Details)
$ / shares in Units, $ in Thousands, shares in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Dec. 20, 2019
USD ($)
$ / shares
shares
Sep. 30, 2020
USD ($)
Sep. 30, 2019
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
Business Acquisition [Line Items]              
Revenues   $ 290,026 $ 155,378 $ 738,335   $ 475,477  
Total operating expenses   919,733 102,834 2,681,858   321,199  
Merger and integration   2,465 $ 5,943 26,362   $ 5,943  
Accrued severance   2,682   2,682 $ 2,682   $ 28,803
Carrizo Oil & Gas, Inc.              
Business Acquisition [Line Items]              
Acquisition related costs             15,600
8.875% Preferred Stock | Carrizo Oil & Gas, Inc.              
Business Acquisition [Line Items]              
Preferred stock cumulative cash dividends rate 8.875%            
Carrizo Oil & Gas, Inc.              
Business Acquisition [Line Items]              
Share conversion ratio 1.75            
Equity interest issued, number of shares (in shares) | shares 168.2            
Equity interest issued, price per share (in dollars per share) | $ / shares $ 4.55            
Total consideration $ 765,373            
Revenues   160,500   408,800      
Total operating expenses   51,600   151,500      
Acquisition related costs             $ 58,800
Restructuring charges         100,800    
Carrizo Oil & Gas, Inc. | Accounts Payable and Accrued Liabilities              
Business Acquisition [Line Items]              
Restructuring reserve   5,600   5,600 5,600    
Carrizo Oil & Gas, Inc. | Employee Severance              
Business Acquisition [Line Items]              
Restructuring charges   800   6,200 35,800    
Carrizo Oil & Gas, Inc. | Acquisition & Integration              
Business Acquisition [Line Items]              
Restructuring charges   $ 1,700   $ 20,200 $ 65,000