Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
OPERATING ACTIVITIES
Net income	$ 476,260	$ 402,549
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	126,005	106,781
Amortization of lease cost in excess of cash paid in accordance with ASU 2016-02	11,897	0
Deferred income taxes	150,398	136,592
(Increase) decrease in:
Accounts receivable	12,642	(6,067)
Inventories	13,085	(13,173)
Prepaid expenses	(32,526)	(7,249)
Other assets including long-term portion of receivables	(178,450)	34,755
Increase (decrease) in:
Accounts payable and accrued expenses	(275,967)	(119,926)
NET CASH PROVIDED BY OPERATING ACTIVITIES	303,344	534,262
INVESTING ACTIVITIES
Purchase of property and equipment	(15,890)	(605,705)
NET CASH USED IN INVESTING ACTIVITIES	(15,890)	(605,705)
FINANCING ACTIVITIES
Payment of principal on bank term loans	(217,857)	(160,714)
Payment of additional closing costs	0	(13,717)
NET CASH USED BY FINANCING ACTIVITIES	(217,857)	(174,431)
DISCONTINUED OPERATIONS
Payment of obligations from discontinued operations	0	(15,000)
Increase (decrease) in cash	69,597	(260,874)
Cash at beginning of period	76,194	461,068
Cash at end of period	145,791	200,194
Supplemental schedule of investing and financing activities
Cash paid for interest	$ 135,123	$ 136,420