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Debt and Shareholders Equity (Details Narrative) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2012
Apr. 05, 2012
Dec. 31, 2011
Notes to Financial Statements        
Outstanding borrowings under revolving loan agreement $ 24,320,828 $ 24,320,828   $ 17,568,484
Credit facility borrowing capacity     30,000,000  
Interest rate of LIBOR plus percentage     1.75%  
Credit facility interest rate   Interest rate of LIBOR plus 1.75%, which is 0.25% lower than the interest rate under the former loan agreement    
Credit facility expiration date   2017-04-05    
Common stock issued upon exercise of employee stock options (in shares) 0 5,000    
Cash received upon exercise of employee stock options   $ 21,000    
Covenant terms and compliance   Under the revolving loan agreement, the Company is required to maintain specific amounts of tangible net worth, a specified debt service coverage ratio, and a fixed charge coverage ratio. These financial covenants in the new loan agreement are similar to the covenants in the prior agreement with Wells Fargo. At September 30, 2012 the Company was in compliance with these covenants under the new agreement with HSBC Bank.