Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities
Net income (loss)	$ 1,255,045	$ (505,664)
Adjustments to reconcile net income (loss) to net cash used by operating activities
Depreciation and amortization	119,118	141,706
Accretion of obligation for lease disposal costs	12,316	10,868
Accretion of beneficial conversion feature and discount	82,244	100,253
Equity based compensation	181,957	37,419
Gain on sale of property, plant and equipment	(1,797,978)
Right-of-use asset amortization	829	8,563
Changes in operating assets and liabilities:
Accounts receivable	(610,652)	(297,995)
Inventories	35,620	11,397
Prepaids and other current assets	211,924	903,070
Accounts payable and accrued liabilities	(394,242)	(771,832)
Unearned revenues	45,942	68,919
Net cash used in operating activities	(857,877)	(293,296)
Cash flows from investing activities:
Proceeds from sale of property, plant and equipment	4,000,000
Purchase of property, plant and equipment	(51,100)	(158,755)
Net cash provided by (used in) investing activities	3,948,900	(158,755)
Cash flows from financing activities:
Proceeds from sale of stock and exercise of options and warrants	66,997	4,478
Payments on financing lease	(2,062)	(1,880)
Proceeds from the issuance of notes payable		101,250
Principal payments on notes payable	(494,159)	(158,580)
Net cash used in financing activities	(429,224)	(54,732)
Net increase (decrease) in cash, cash equivalents, and restricted cash	2,661,799	(506,783)
Cash, cash equivalents, and restricted cash at beginning of period	1,305,603	1,751,692
Cash, cash equivalents, and restricted cash at end of period	3,967,402	1,244,909
Supplemental disclosure of cash flow activities:
Cash paid for interest	44,818	50,128
Supplemental disclosure of noncash financing and investing transactions
Decrease in accrued interest and increase in equity for conversion of dividends to stock	204,480	207,480
Increase in operating lease right-of-use asset and right-of-use liability for new lease		1,603
Increase in equity and decrease in liability for the conversion of preferred stock		25,000
Cash and cash equivalents	3,136,639	414,226
Restricted cash included in long-term assets	830,763	830,683
Total cash, cash equivalents, and restricted cash shown in statement of cash flows	$ 3,967,402	$ 1,244,909