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Supplementary Information - Results of Operations from Oil and Gas Producing Activities (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Revenue:    
Results of Operations, Revenue from Oil and Gas Producing Activities $ 107,742 $ 124,118
Costs and Expenses:    
Results of Operations, Production or Lifting Costs 39,004 37,816
Results of Operations, Depreciation, Depletion and Amortization, and Valuation Provisions 31,660 28,068
Results of Operations, Income Tax Expense 5,797 10,329
Total Costs and Expenses 76,461 76,213
Results of Operations from Producing Activities (excluding corporate overhead and interest costs) $ 31,281 $ 47,905