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CONDENSED BALANCE SHEETS - USD ($)
Sep. 30, 2015
Dec. 31, 2014
Current assets:    
Cash and cash equivalents $ 19,703,945 $ 22,128,977
Restricted cash   600,897
Accounts receivable, net 5,027,043 5,642,091
Inventories, net 6,111,034 4,663,548
Other current assets 774,817 1,194,055
Total current assets 31,616,839 34,229,568
Property, plant, and equipment, net 11,478,045 10,852,853
Intangible and other assets, net 263,760 270,693
Total assets 43,358,644 45,353,114
Current liabilities:    
Accounts payable 5,105,807 5,142,796
Litigation proceeds subject to stipulation   7,724,826
Current portion of long-term debt 246,110 149,744
Accrued compensation 630,050 504,188
Dividends payable 56,363  
Accrued royalties to shareholders 770,197 787,434
Other accrued liabilities 994,821 782,322
Income taxes payable 5,405 8,290
Total current liabilities 7,808,753 15,099,600
Long-term debt, net of current maturities 3,481,555 3,425,028
Total liabilities $ 11,290,308 $ 18,524,628
Commitments and contingencies - see Note 6
Preferred stock $1 par value:    
Common Stock, no par value
Additional paid-in capital $ 58,178,551 $ 59,273,769
Retained deficit (27,096,660) (32,336,119)
Common stock in treasury - at cost   (1,096,609)
Total stockholders' equity 32,068,336 26,828,486
Total liabilities and stockholders' equity 43,358,644 45,353,114
Series I, Class B    
Preferred stock $1 par value:    
Preferred stock 98,500 98,500
Series II, Class B    
Preferred stock $1 par value:    
Preferred stock 176,200 176,200
Series III, Class B    
Preferred stock $1 par value:    
Preferred stock 129,245 130,245
Series IV, Class B    
Preferred stock $1 par value:    
Preferred stock 542,500 542,500
Series V, Class B    
Preferred stock $1 par value:    
Preferred stock $ 40,000 $ 40,000