Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues:
Revenue by Customer	$ 257,696	$ 197,323	$ 998,423	$ 793,099
Costs, expenses and (gains):
General and administrative expense	136,366	116,234	402,674	366,467
Depreciation expense	1,050	234	1,517	701
Gain on sale of land		(28,561)	(881,654)	(31,452)
Total costs, expenses and (gains)	181,780	116,780	(353,274)	428,593
Income from operations	75,916	80,543	1,351,697	364,506
Other income - interest income	26,301	11,465	52,176	32,040
Income before income taxes	102,217	92,008	1,403,873	396,546
Federal and state income tax expense:
Current	16,817	29,617	329,409	76,055
Deferred income tax expense		11,093		11,093
Total income taxes	16,817	40,710	329,409	87,148
Net income	$ 85,400	$ 51,298	$ 1,074,464	$ 309,398
Per common stock, basic and diluted
Net income (in dollars per share)	$ 0.04	$ 0.03	$ 0.55	$ 0.16
Dividends (in dollars per share)	$ 0	$ 0	$ 0.12	$ 0.10
Weighted average shares outstanding, basic and diluted (in shares)	1,942,495	1,942,495	1,942,495	1,942,495
Oil and Gas [Member]
Revenues:
Revenues from customers	$ 178,640	$ 132,348	$ 464,895	$ 465,710
Costs, expenses and (gains):
Cost of goods and services sold	18,435	13,668	48,378	46,717
Timber [Member]
Revenues:
Revenues from customers	56,929		411,936	8,966
Costs, expenses and (gains):
Cost of goods and services sold	15,212	2,776	50,591	8,883
Surface Leases, Unrelated Parties [Member]
Revenues:
Revenues, leases	22,127	64,975	109,133	318,423
Surface Leases, Related Parties [Member]
Revenues:
Revenues, leases			12,459
Surface Leases [Member]
Costs, expenses and (gains):
Cost of goods and services sold	$ 10,717	$ 12,429	$ 25,220	$ 37,277