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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 6 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Cash flows from operating activities:    
Net income $ 565,457 $ 608,237
Adjustments to reconcile net income to net cash provided by operating activities:    
Deferred income tax (benefit) expense (123,016) 119,661
Stock-based compensation 94,241 104,069
Depreciation, depletion and amortization 1,337,917 1,123,985
Accretion of asset retirement obligations 16,016 15,524
Amortization of debt issuance costs 2,149 2,149
Changes in operating assets and liabilities:    
Decrease in accounts receivable 256,435 88,478
Decrease (increase) in right-of-use asset 24,930 (131,099)
Decrease in prepaid expenses 10,022 5,781
(Decrease) increase in accounts payable and accrued expenses (28,735) 15,199
Settlement of asset retirement obligations (17,214) (13,370)
Decrease in income taxes payable (45,723) (63,308)
(Increase) decrease in operating lease liability (24,930) 131,099
Net cash provided by operating activities 2,067,549 2,006,405
Cash flows from investing activities:    
Additions to oil and gas properties (676,601) (1,667,027)
Investments in limited liability companies at cost (200,000) (400,000)
Proceeds from sale of oil and gas properties and equipment 6,389 70
Net cash used in investing activities (870,212) (2,066,957)
Cash flows from financing activities:    
Proceeds from exercise of stock options 77,641
Acquisition of treasury stock (703,216)
Dividends paid (204,600) (209,000)
Net cash used in financing activities (204,600) (834,575)
Net increase (decrease) in cash and cash equivalents 992,737 (895,127)
Cash and cash equivalents at beginning of period 1,753,955 2,473,484
Cash and cash equivalents at end of period 2,746,692 1,578,357
Supplemental disclosure of cash flow information:    
Cash paid for interest 7 9
Cash paid for income taxes 277,802
Accrued capital expenditures included in accounts payable 13,511 203,000
Non-cash investing and financing activities:    
Asset retirement obligations $ 1,469 $ 1,372