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STATEMENTS OF CASH FLOWS (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Cash flows from operating activities:      
Net income (loss) $ (6,213,852) $ (4,132,892) $ 1,418,482
Adjustments to reconcile net income (loss) to net cash provided by (used by) operating activities:      
Depreciation and amortization 1,284,249 1,335,858 1,311,746
Share based compensation 52,775    
Provision for doubtful accounts 50,000 107,246 1,298,044
Provision for inventory valuation 530,000 120,000 52,835
Gain on disposal of assets (1,000)    
Accreted interest   3,773 17,610
(Increase) decrease in assets:      
Inventories (1,275,336) 1,127,166 2,391,937
Accounts receivable 167,589 (66,867) 1,305,379
Income taxes receivable 9,431 30,054 (27,454)
Other current assets (281,881) (565,231) 462,715
Increase (decrease) in liabilities:      
Accounts payable 7,895 1,441,308 1,054,563
Litigation proceeds subject to stipulation 7,724,826    
Other accrued liabilities 787,902 787,393 (3,646,555)
Income taxes payable 90,971 (29,471) (125,529)
Net cash provided by operating activities 2,933,569 158,337 5,513,773
Cash flows from investing activities:      
Purchase of property, plant, and equipment (283,289) (510,117) (826,091)
Proceeds from sale of assets 1,000    
Net cash used by investing activities (282,289) (510,117) (826,091)
Cash flows from financing activities:      
Repayments of long-term debt and notes payable (317,303) (626,219) (612,927)
Repurchase of Preferred Stock     (1,357,275)
Proceeds from the exercise of stock options 536,925 1,620,701 54,369
Repurchase of Common Stock (974,407) (122,202)  
Payment of Preferred Stock dividends (230,449) (230,450) (364,625)
Net cash provided (used) by financing activities (985,234) 641,830 (2,280,458)
Net increase in cash and cash equivalents 1,666,046 290,050 2,407,224
Cash and cash equivalents at:      
Beginning of period 25,963,313 25,673,263 23,266,039
End of period 27,629,359 25,963,313 25,673,263
Supplemental schedule of cash flow information:      
Interest paid 241,052 264,033 279,691
Income taxes paid 7,988 3,474 188,754
Supplemental schedule of noncash investing and financing activities:      
Preferred dividends declared, not paid 57,613 57,613  
Debt assumed for the purchase of molding machines     $ 534,986