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CONDENSED BALANCE SHEETS - USD ($)
Jun. 30, 2025
Dec. 31, 2024
Current assets:    
Cash and cash equivalents $ 3,044,986 $ 4,235,388
Accounts receivable, net 8,085,890 7,786,697
Investments in debt and equity securities, at fair value 30,009,302 40,328,308
Inventories 20,449,860 19,189,753
Income taxes receivable 662,429 978,851
Other current assets 744,351 753,062
Total current assets 62,996,818 73,272,059
Property, plant, and equipment, net 84,012,319 87,348,518
Other assets 81,269 103,625
Total assets 147,090,406 160,724,202
Current liabilities:    
Accounts payable 4,060,355 4,290,588
Current portion of long-term debt 349,962 332,480
Accrued compensation 1,029,652 1,073,357
Dividends payable 1,417,437 1,417,437
Accrued royalties to shareholder 831,209 789,358
Other accrued liabilities 1,294,852 873,254
Income taxes payable 3,628 4,442
Total current liabilities 8,987,095 8,780,916
Other long-term liabilities 60,918,499 63,872,553
Long-term debt, net of current maturities 717,530 900,042
Total liabilities 70,623,124 73,553,511
Commitments and contingencies - see Note 8
Stockholders' equity:    
Common Stock, no par value
Additional paid-in capital 73,160,333 73,160,333
Retained earnings 15,965,182 26,668,591
Common stock in treasury - at cost (4,087,145 shares at December 31, 2024 and 2023) (12,888,678) (12,888,678)
Total stockholders' equity 76,467,282 87,170,691
Total liabilities and stockholders' equity 147,090,406 160,724,202
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 $ 74,245 $ 74,245