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Summary of Significant Accounting Policies (Details Textual) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Summary of Significant Accounting Policies (Textual) [Abstract]          
Reserves for doubtful accounts $ 0   $ 0   $ 0
Charges incurred to reserve or write-off past due accounts $ 0 $ 0 $ 0 $ 0  
Number of months before product expiration during which a customer can return product     6 months    
Number of months after product expiration during which a customer can return product     12 months