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CONDENSED BALANCE SHEETS - USD ($)
Sep. 30, 2017
Dec. 31, 2016
Current assets:    
Cash and cash equivalents $ 15,866,458 $ 16,199,043
Accounts receivable, net 5,246,322 3,267,838
Inventories, net 7,353,247 7,017,224
Other current assets 505,656 192,548
Total current assets 28,971,683 26,676,653
Property, plant, and equipment, net 11,663,988 12,092,037
Other assets 7,063 10,289
Total assets 40,642,734 38,778,979
Current liabilities:    
Accounts payable 5,046,014 4,471,756
Current portion of long-term debt 430,089 430,393
Accrued compensation 924,879 536,456
Dividends payable 55,113 55,113
Accrued royalties to shareholder 847,301 659,443
Insurance proceeds 876,250  
Other accrued liabilities 950,770 1,019,283
Total current liabilities 9,130,416 7,172,444
Long-term debt, net of current maturities 3,172,321 3,498,244
Total liabilities 12,302,737 10,670,688
Commitments and contingencies - see Note 6
Preferred stock, $1 par value:    
Additional paid-in capital 62,127,956 59,290,333
Accumulated deficit (34,569,404) (31,963,487)
Total stockholders' equity 28,339,997 28,108,291
Total liabilities and stockholders' equity 40,642,734 38,778,979
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 171,200 171,200
Series III, Class B    
Preferred stock, $1 par value:    
Preferred stock 129,245 129,245
Series IV, Class B    
Preferred stock, $1 par value:    
Preferred stock 342,500 342,500
Series V, Class B    
Preferred stock, $1 par value:    
Preferred stock $ 40,000 $ 40,000