Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Oil and Gas Sales	$ 5,346,837	$ 9,139,958
Lease Bonuses and Other	872,974	809,980
Sale of Trading Securities	858,921	561,844
Interest Received	42,228	14,995
Agricultural Rentals and Other	60,648	11,193
Dividends Received on Trading Securities	1,254	1,032
Cash Distributions from Equity Investments	165,000	82,500
Cash from Life Insurance Policy Benefits		391,290
Tax Refunds	9,438
Cash Paid –
Production Costs	(2,132,055)	(2,664,013)
General Suppliers, Employees and Taxes, Other than Income Taxes	(1,587,921)	(1,638,948)
Purchase of Trading Securities	(860,175)	(562,832)
Income Taxes Paid, Net	(508)	(720,544)
Farm Expense and Other	(513)	(516)
Net Cash Provided by Operating Activities	2,776,128	5,425,939
Cash Provided by/(Applied to) Investing Activities:
Maturity of Available-for-Sale Securities	17,283,067	13,308,097
Purchase of Available-for-Sale Securities	(22,084,650)	(15,295,847)
Proceeds from Disposal of Property, Plant and Equipment	23,774	70,981
Purchase of Property, Plant and Equipment	(1,978,179)	(2,300,347)
Cash Distributions from Other Investments	155,000	60,000
Purchase of Equity and Other Investments	(1,030,000)	(860,440)
Net Cash Applied to Investing Activities	(7,630,988)	(5,017,556)
Cash Applied to Financing Activities:
Dividends Paid to Stockholders	(921,667)	(1,627,930)
Purchase of Treasury Stock	(88,834)	(46,796)
Total Cash Applied to Financing Activities	(1,010,501)	(1,674,726)
Net Change in Cash and Cash Equivalents	(5,865,361)	(1,266,343)
Cash and Cash Equivalents at Beginning of Year	13,937,215	15,203,558
Cash and Cash Equivalents at End of Year	8,071,854	13,937,215
Reconciliation of Net Loss to Net Cash Provided by Operating Activities:
Net Loss	(84,225)	(1,885,332)
Net Loss Increased (Decreased) by Net Change in –
Net Unrealized Holding (Gains)/Losses on Trading Securities	(82,159)	67,643
Accounts Receivable	(70,046)	1,499,203
Interest and Dividends Receivable	(4,142)	(1,715)
Refundable Income Taxes	(48,746)	(333,659)
Accounts Payable	5,911	(54,408)
Trading Securities	19,176	(32,891)
Deferred Taxes	(115,210)	(1,859,431)
Other Liabilities	46,602	46,814
Income from Equity and Other Investments	(177,800)	(98,275)
Cash Distributions from Equity Investments	165,000	82,500
Cash from Life Insurance Policy Benefits		391,290
Exploratory Costs	377,112	355,780
Disposition of Property, Plant and Equipment	24,756	156,868
Depreciation, Depletion, Amortization and Valuation Provisions	2,719,899	7,091,552
Net Cash Provided by Operating Activities	$ 2,776,128	$ 5,425,939