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CONDENSED STATEMENTS OF CASH FLOWS (USD $)
 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Cash flows from operating activities    
Net loss $ (3,428,215) $ (3,848,269)
Adjustments to reconcile net loss to net cash provided by (used by) operating activities:    
Depreciation and amortization 595,172 627,576
Share based compensation   52,775
Gain on disposal of assets   (1,000)
(Increase) decrease in assets:    
Inventories 384,187 (950,412)
Accounts receivable (606,471) (611,669)
Other current assets 481,439 480,144
Increase (decrease) in liabilities:    
Accounts payable (300,843) (1,264,243)
Other accrued liabilities (773,732) 112,011
Income taxes payable (84,290) 3,751
Net cash used by operating activities (3,732,753) (5,399,336)
Cash flows from investing activities    
Purchase of property, plant, and equipment (962,279) (160,359)
Changes in restricted cash (600,000)  
Proceeds from sale of assets   1,000
Net cash used by investing activities (1,562,279) (159,359)
Cash flows from financing activities    
Repayments of long-term debt and notes payable (145,754) (156,403)
Repurchase of Common Stock   (446,155)
Proceeds from the exercise of stock options 175,081  
Payment of Preferred Stock dividends (115,226) (115,226)
Net cash used by financing activities (85,899) (717,784)
Net decrease in cash and cash equivalents (5,380,931) (6,276,479)
Cash and cash equivalents at:    
Beginning of period 27,629,359 25,963,313
End of period 22,248,428 19,686,834
Supplemental schedule of cash flow information:    
Interest paid 113,203 123,177
Income taxes paid 91,210 2,593
Supplemental schedule of noncash investing and financing activities:    
Preferred dividends declared, not paid $ 57,613 $ 57,613