CONDENSED BALANCE SHEETS - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 6,362,217	$ 19,721,345
Accounts receivable, net	6,314,464	4,835,119
Receivable from Technology Investment Agreement (TIA)	1,390,919	2,025,413
Investments in debt and equity securities, at fair value	41,030,196	29,657,314
Inventories	22,099,047	20,684,168
Income taxes receivable	9,518,988	10,619,835
Prepaid estimated taxes	4,295	4,295
Other current assets	1,795,500	1,262,221
Total current assets	88,515,626	88,809,710
Property, plant, and equipment, net	98,681,377	100,152,768
Deferred tax asset	6,287,746	6,518,663
Other assets	173,346	184,524
Total assets	193,658,095	195,665,665
Current liabilities:
Accounts payable	5,370,756	6,404,925
Current portion of long-term debt	287,861	285,954
Accrued compensation	945,948	997,530
Dividends payable	1,417,937	1,417,937
Accrued royalties to shareholder	769,709	973,701
Other accrued liabilities	1,431,915	1,992,144
Income taxes payable	63,631	63,631
Total current liabilities	10,287,757	12,135,822
Other long-term liabilities	74,439,649	75,459,612
Long-term debt, net of current maturities	1,461,019	1,533,422
Total liabilities	86,188,425	89,128,856
Commitments and contingencies - see Note 8
Stockholders' equity:
Common Stock, no par value	0	0
Additional paid-in capital	73,164,501	73,164,501
Retained earnings	46,961,402	46,028,541
Common stock in treasury	(12,888,678)	(12,888,678)
Total stockholders' equity	107,469,670	106,536,809
Total liabilities and stockholders' equity	193,658,095	195,665,665
Series II, Class B
Stockholders' equity:
Preferred stock, $1 par value: Class B; authorized: 5,000,000 shares	156,200	156,200
Series III, Class B
Stockholders' equity:
Preferred stock, $1 par value: Class B; authorized: 5,000,000 shares	$ 76,245	$ 76,245