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Acquisitions and Disposal of Assets (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 10, 2021
USD ($)
Apr. 22, 2021
USD ($)
Feb. 05, 2021
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
MMBoe
Sep. 30, 2021
USD ($)
MMBoe
Sep. 30, 2020
USD ($)
MMBoe
Assets and Liabilities Held for Sale [Line Items]              
Proceeds from sale of assets           $ 38,086 $ 37,243
Total revenues       $ 46,584 $ 27,676 114,403 84,660
Lease operating expenses       9,080 $ 8,069 $ 26,266 $ 32,409
Production volume (MMBoe) | MMBoe         2,000,000.0 5,100,000 6,800,000
Production, ad valorem, and other taxes       2,219 $ 2,333 $ 6,929 $ 7,386
Royalty Interest of SandRidge Mississippian Trust I              
Assets and Liabilities Held for Sale [Line Items]              
Gross purchase price   $ 4,900          
Net purchase price   $ 3,600          
Royalty Interest of SandRidge Mississippian Trust I | SandRidge Energy, Inc              
Assets and Liabilities Held for Sale [Line Items]              
Ownership interest in trust   26.90%          
Royalty Interest of SandRidge Mississippian Trust II              
Assets and Liabilities Held for Sale [Line Items]              
Gross purchase price $ 5,300            
Net purchase price $ 3,300            
Royalty Interest of SandRidge Mississippian Trust II | SandRidge Energy, Inc              
Assets and Liabilities Held for Sale [Line Items]              
Ownership interest in trust 37.60%            
Disposal Group, Held-for-sale, Not Discontinued Operations | North Park Basin, Colorado              
Assets and Liabilities Held for Sale [Line Items]              
Purchase price     $ 47,000        
Proceeds from sale of assets     39,700        
Reduction of full cost pool assets     22,000        
Reduction in non-full cost pool assets     4,600        
Gain on sale     19,700     (18,900)  
Gain from release of revenues in suspense     500        
Gain from relief of asset retirement obligations     6,100        
Reduction in oil and gas properties related to NPB     $ 26,600        
Decrease in sales price       $ 800      
Total revenues         7,100 3,200 24,500
Lease operating expenses         $ 1,300 $ 900 $ 7,100
Production volume (MMBoe) | MMBoe         200,000 100,000 800,000
Production, ad valorem, and other taxes         $ 500   $ 1,500
Disposal Group, Held-for-sale, Not Discontinued Operations | North Park Basin, Colorado | Revenue Benchmark | Revenue from Rights Concentration Risk              
Assets and Liabilities Held for Sale [Line Items]              
Concentration risk, percent of total         25.60% 2.80% 28.90%
Disposal Group, Held-for-sale, Not Discontinued Operations | North Park Basin, Colorado | Consolidated Lease Operating Expense | Revenue from Rights Concentration Risk              
Assets and Liabilities Held for Sale [Line Items]              
Concentration risk, percent of total         16.40% 3.50% 21.90%
Disposal Group, Held-for-sale, Not Discontinued Operations | North Park Basin, Colorado | Consolidated Production, Ad Valorem and Other Taxes | Revenue from Rights Concentration Risk              
Assets and Liabilities Held for Sale [Line Items]              
Concentration risk, percent of total         19.90%   20.90%
Disposal Group, Held-for-sale, Not Discontinued Operations | North Park Basin, Colorado | Consolidated Production | Revenue from Rights Concentration Risk              
Assets and Liabilities Held for Sale [Line Items]              
Concentration risk, percent of total         9.90% 1.30% 11.10%