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Financing Obligations (Details Textuals 3) (USD $)
6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Line of Credit Facility [Line Items]    
Value of Equipment Purchased with Credit Facility Limits Borrowing      
Equipment Loan
   
Line of Credit Facility [Line Items]    
Collateral Security under the Credit Facility 12,000,000  
Number of monthly installments 60  
Value of monthly installment 30,000  
Value of reserves, Letters of credit and Availability Block 5,200,000  
Borrowing availability under the credit facility $ 6,800,000