CONDENSED BALANCE SHEETS - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 15,218,714	$ 18,045,044
Accounts receivable, net	5,161,441	4,900,997
Inventories, net	7,204,724	6,296,625
Other current assets	229,410	1,568,032
Total current assets	27,814,289	30,810,698
Property, plant, and equipment, net	12,472,192	11,468,061
Intangible and other assets, net	258,375	262,105
Total assets	40,544,856	42,540,864
Current liabilities:
Accounts payable	4,709,270	5,697,518
Current portion of long-term debt	259,336	249,349
Accrued compensation	618,743	763,576
Dividends payable	55,113	55,414
Accrued royalties to shareholder	680,287	631,145
Other accrued liabilities	926,043	690,535
Income taxes payable	10,893	8,176
Total current liabilities	7,259,685	8,095,713
Long-term debt, net of current maturities	3,220,066	3,417,471
Total liabilities	10,479,751	11,513,184
Commitments and contingencies - see Note 6
Preferred stock $1 par value:
Common Stock, no par value
Additional paid-in capital	59,026,550	58,268,036
Retained deficit	(29,742,890)	(28,021,801)
Total stockholders' equity	30,065,105	31,027,680
Total liabilities and stockholders' equity	40,544,856	42,540,864
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