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Financing Obligations (Details Textuals) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2012
Line of Credit Facility [Line Items]  
Revolving credit facility related to equipment loan with a term of 5 years $ 1.8
Equipment Loan
 
Line of Credit Facility [Line Items]  
Revolving credit facility related to equipment loan with a term of 5 years 1.8
Duration of Term loan - Amendment in credit agreement 5 years
Equipment Loan, outstanding balance 1.8
Line of Credit
 
Line of Credit Facility [Line Items]  
Revolving credit facility, maximum borrowing limit $ 15