Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 1,074,464	$ 309,398
Less non-cash expenses included in net income:
Depreciation, depletion and amortization expense	15,413	701
Deferred income tax expense		11,093
Gain on sale of land	(881,654)	(31,452)
Changes in operating assets and liabilities:
Increase in current assets	(67,375)	(116,782)
Increase in current liabilities	(42,759)	103,887
Net cash provided by operating activities	98,089	276,845
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of certificates of deposit	(3,145,000)	(2,412,890)
Proceeds from maturity of certificates of deposit	2,662,890	2,410,000
Purchases of fixed assets	(39,317)	(93,901)
Proceeds from the sale of fixed assets	996,494	35,474
Net cash provided by (used in) investing activities	475,067	(61,317)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends paid	(233,099)	(194,250)
Net cash used in financing activities	(233,099)	(194,250)
NET INCREASE IN CASH AND RESTRICTED CASH	340,057	21,278
Cash and restricted cash, beginning of the period	1,652,404	1,081,188
Cash and restricted cash, end of the period	1,992,461	1,102,466
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for interest
Cash paid for income taxes	$ 355,387	$ 99,240