Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Cash from Operating Activities:
Oil and Gas Sales	$ 6,392,842	$ 7,790,371
Lease Bonuses and Other	137,227	562,184
Sale of Equity Securities	1,120,176	1,514,362
Interest Received	473,835	315,146
Agricultural Rentals and Other	11,476	6,008
Dividends Received on Equity Securities	463	2,902
Cash Distributions from Equity Method Investments	49,500	24,750
Income Tax Refunds, Net of Income Taxes Paid		214,784
Cash Paid –
Production Costs	(2,323,196)	(2,391,711)
General Suppliers, Employees and Taxes, Other than Income Taxes	(1,722,165)	(1,674,759)
Purchase of Equity Securities	(1,120,724)	(1,517,352)
Income Taxes Paid, Net of Income Tax Refunds	(163,443)
Farm Expense and Other	(567)	(585)
Net Cash Provided by Operating Activities	2,855,424	4,846,100
Cash Provided by/(Applied to) Investing Activities:
Maturity of Available-for-Sale Debt Securities	35,427,891	32,786,554
Purchase of Available-for-Sale Debt Securities	(37,696,386)	(32,664,425)
Proceeds from Disposal of Property, Plant and Equipment	21,515	587,408
Purchase of Property, Plant and Equipment	(2,083,991)	(2,788,038)
Cash Distributions from Other Investments	8,500	16,500
Purchase of Other Investments	(7,467)	(55,949)
Notes Receivable	43,158	(43,158)
Net Cash Applied to Investing Activities	(4,286,780)	(2,161,108)
Cash Applied to Financing Activities:
Dividends Paid/Escheated	(1,479,081)	(959,499)
Dividends Payable to Stockholders	(687,048)
Purchase of Treasury Stock	(92,676)	(64,804)
Total Cash Applied to Financing Activities	(2,258,805)	(1,024,303)
Net Change in Cash and Cash Equivalents	(3,690,161)	1,660,689
Cash and Cash Equivalents at Beginning of Year	6,428,499	4,767,810
Cash and Cash Equivalents at End of Year	2,738,338	6,428,499
Reconciliation of Net Income/(Loss) to Net Cash Provided by Operating Activities:
Net Income/(Loss)	(266,763)	2,313,692
Net Income/(Loss) Increased (Decreased) by Net Change in –
Net Unrealized Holding (Gains)/Losses on Equity Securities	(101,247)	181,818
Accounts Receivable	(98,220)	25,057
Interest and Dividends Receivable	(19,854)	(33,469)
Refundable Income Taxes	(93,612)	310,443
Accounts Payable	10,460	4,692
Equity Securities	10,230	(75,940)
Deferred Taxes	(292,906)	292,221
Other Liabilities	111,123	(12,030)
Changes in Equity Method and Other Investments	52,432	67,984
Cash Distributions from Equity Method Investments	49,500	24,750
Exploration Costs	744,446	205,671
Disposition of Property, Plant and Equipment	(29,520)	(562,671)
Depreciation, Depletion, Amortization and Valuation Provisions	2,779,355	2,103,882
Net Cash Provided by Operating Activities	$ 2,855,424	$ 4,846,100