CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Net cash provided by operating activities - continuing operations	$ 5,569,530	$ 13,874,865
Net cash used in operating activities - discontinued operations	(595,980)	(661,698)
Net cash provided by operating activities	4,973,550	13,213,167
Cash flows from investing activities
Purchase of certificate of deposit		(2,518,493)
Maturity of certificate(s) of deposit		2,500,000
Additions to property, plant and equipment and construction in progress	(3,110,041)	(1,796,196)
Proceeds from asset dispositions	21,410	24,360
Purchase of non-controlling interest in PERC	(2,440,027)
Net cash used in investing activities	(5,528,658)	(1,790,329)
Cash flows from financing activities
Dividends paid to common shareholders	(2,640,792)	(2,595,547)
Dividends paid to preferred shareholders	(5,845)	(4,868)
Dividends paid to non-controlling interests		(464,200)
Buyback of redeemable preferred stock	(1,830)
Proceeds received from exercise of stock options	7,251	2,696
Principal repayments on long-term debt	(54,708)	(31,144)
Net cash used in financing activities	(2,695,924)	(3,093,063)
Net increase (decrease) in cash and cash equivalents	(3,251,032)	8,329,775
Cash and cash equivalents at beginning of period	50,711,751	40,358,059
Cash and cash equivalents at beginning of period - discontinued operations	442,252	750,048
Less: cash and cash equivalents at end of period - discontinued operations	(211,272)	(344,720)
Cash and cash equivalents at end of period	47,691,699	49,093,162
Non-cash transactions:
Dividends declared but not paid	1,341,651	1,302,520
Transfers from inventory to property, plant and equipment and construction in progress	139,471	185,013
Transfers from construction in progress to property, plant and equipment	188,871	240,401
Right-of-use assets obtained in exchange for new operating lease liabilities	249,145
Purchase of equipment through issuance of long-term debt		68,422
Transfers from prepaids to property, plant and equipment	91,123
Transfers from prepaids to inventory	419,420
Redeemable preferred stock [Member]
Non-cash transactions:
Issuance of shares of common stock for services rendered	287,922	133,197
Common stock [Member]
Non-cash transactions:
Issuance of shares of common stock for services rendered	621,811	$ 521,016
Issuance of 368,383 and 0, respectively, shares of common stock for the purchase of non-controlling interests in PERC	$ 5,359,973