BALANCE SHEETS - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 19,721,345	$ 29,162,913
Accounts receivable, net	4,835,119	34,859,505
Receivable from Technology Investment Agreement (TIA)	2,025,413	5,924,136
Investments in debt and equity securities, at fair value	29,657,314	13,268,986
Inventories	20,684,168	20,589,919
Income taxes receivable	10,619,835
Prepaid estimated taxes	4,295
Other current assets	1,262,221	701,969
Total current assets	88,809,710	104,507,428
Property, plant, and equipment, net	100,152,768	87,925,651
Deferred tax asset	6,518,663	13,865,834
Other assets	184,524	5,675
Total assets	195,665,665	206,304,588
Current liabilities:
Accounts payable	6,404,925	20,404,573
Current portion of long-term debt	285,954	289,114
Accrued compensation	997,530	1,056,656
Dividends payable	1,417,937	1,438,371
Accrued royalties to shareholder	973,701	3,450,684
Other accrued liabilities	1,992,144	3,725,527
Income taxes payable	63,631	4,959,878
Total current liabilities	12,135,822	35,324,803
Other long-term liabilities	75,459,612	69,996,330
Long-term debt, net of current maturities	1,533,422	1,814,194
Total liabilities	89,128,856	107,135,327
Commitments and contingencies - see Note 10
Preferred stock, $1 par value:
Common Stock, no par value; authorized: 100,000,000 shares; 34,024,304 shares issued and 29,937,159 and 34,013,104 shares outstanding at December 31, 2022 and 2021, respectively
Additional paid-in capital	73,164,501	63,024,888
Retained earnings	46,028,541	41,182,429
Common stock in treasury - at cost (4,087,145 and 528,169 shares at December 31, 2022 and 2021, respectively)	(12,888,678)	(5,270,501)
Total stockholders' equity	106,536,809	99,169,261
Total liabilities and stockholders' equity	195,665,665	206,304,588
Series II, Class B
Preferred stock, $1 par value:
Preferred stock, $1 par value: Class B; authorized: 5,000,000 shares	156,200	156,200
Series III, Class B
Preferred stock, $1 par value:
Preferred stock, $1 par value: Class B; authorized: 5,000,000 shares	$ 76,245	$ 76,245