Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
OPERATING ACTIVITIES
Net income	$ 833,158	$ 524,198
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	807,816	1,231,498
Amortization of lease cost in excess of cash paid	27,151	35,794
Deferred income taxes	0	(81,983)
Changes in operating assets and liabilities:
Accounts receivable	(51,452)	(211,519)
Inventories	(28,612)	17,780
Prepaid expenses	24,068	86,296
Other assets including long-term portion of receivables	(55,299)	(424,602)
(Decrease) in:
Accounts payable and accrued expenses	(395,514)	(186,428)
NET CASH PROVIDED BY OPERATING ACTIVITIES	1,161,316	991,034
INVESTING ACTIVITIES
Purchase of property and equipment	(566,409)	(953,028)
NET CASH (USED) IN INVESTING ACTIVITIES	(566,409)	(953,028)
FINANCING ACTIVITIES
Payment of principal on convertible notes	0	(1,275,000)
Proceeds of new loan - Corbel	0	7,042,958
Payment of principal - First Financial Bank	0	(4,379,024)
NET CASH (USED) BY FINANCING ACTIVITIES	0	1,388,934
Increase in cash	594,907	1,426,940
Cash at beginning of period	1,194,363	218,132
Cash at end of period	1,789,270	1,645,072
Supplemental schedule of investing and financing activities
Cash paid for interest	$ 675,466	$ 634,548