CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities
Net income (loss)	$ 59,126	$ (14,266)
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation and amortization	348,873	449,234
Unrealized loss on marketable equity securities	41,907
Amortization of loan procurement costs	10,609	10,609
Compensation expense related to stock-based awards	884
Changes in operating assets and liabilities:
Accounts receivable	22,104	64,471
Prepaid expenses and other assets	(41,544)	29,705
Accounts payable and accrued expenses	125,650	65,007
Net cash provided by operating activities	567,609	604,760
Cash flows from investing activities
Construction	(28,008)
Improvements and equipment additions	(24,171)	(121,890)
Net cash used in investing activities	(52,179)	(121,890)
Cash flows from financing activities
Dividends paid	(495,266)	(495,266)
Net cash used in financing activities	(495,266)	(495,266)
Net increase (decrease) in cash and cash equivalents	20,164	(12,396)
Cash, cash equivalents, and restricted cash, beginning of period	2,256,415	2,965,694
Cash, cash equivalents, and restricted cash, end of period	2,276,579	2,953,298
Supplemental schedule of cash flow information
Interest paid	$ 209,600	$ 209,600