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STATEMENTS OF CASH FLOWS (USD $)
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Cash flows from operating activities:      
Net income (loss) $ 1,418,482 $ 2,400,694 $ (9,422,300)
Adjustments to reconcile net income (loss) to net cash provided by (used by) operating activities:      
Depreciation and amortization 1,311,746 1,516,226 1,396,793
Litigation settlement - marketing fees payable   (1,419,760)  
Stock option compensation   1,340,300 2,111,360
Provision for inventory valuation 52,835    
Reserve for non-contractual deductions   850,000  
Provision for doubtful accounts 1,298,044 133,990 182,000
Impairment of assets   365,295 2,594,602
Accreted interest 17,610 30,920 43,151
(Increase) decrease in assets:      
Inventories 2,391,937 (1,774,822) (265,837)
Accounts receivable 2,707,607 1,382,158 (6,841,268)
Income taxes receivable (27,454) 3,643,606 (3,655,637)
Other current assets 462,715 (56,851) (224,280)
Increase (decrease) in liabilities:      
Accounts payable (347,665) (3,149,344) 852,875
Accrued liabilities, other (3,646,555) 3,313,260 1,015,505
Income taxes payable (125,529) 155,000 (86,695)
Net cash provided (used) by operating activities 5,513,773 8,730,672 (12,299,731)
Cash flows from investing activities:      
Purchase of property, plant, and equipment (826,091) (169,415) (2,383,867)
Net cash used by investing activities (826,091) (169,415) (2,383,867)
Cash flows from financing activities:      
Repayments of long-term debt and notes payable (612,927) (2,660,336) (499,668)
Repurchase of Preferred Stock (1,357,275)    
Proceeds from the exercise of stock options 54,369 115,600 25,610
Payment of Preferred Stock dividends (364,625) (876,566)  
Net cash used by financing activities (2,280,458) (3,421,302) (474,058)
Net increase (decrease) in cash and cash equivalents 2,407,224 5,139,955 (15,157,656)
Cash and cash equivalents at:      
Beginning of period 23,266,039 18,126,084 33,283,740
End of period 25,673,263 23,266,039 18,126,084
Supplemental schedule of cash flow information:      
Interest paid 279,691 321,610 184,018
Income taxes paid 188,754 16,000  
Supplemental schedule of noncash investing and financing activities:      
Debt assumed to construct a warehouse     1,362,602
Forgiveness of royalties by shareholder     1,000,000
Debt assumed for the purchase of molding machines $ 534,986