Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details Textual)

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Commitments and Contingencies (Details Textual) (USD $)
1 Months Ended 12 Months Ended
Dec. 20, 2012
Dec. 31, 2012
Jun. 30, 2013
Commitments And Contingencies [Line Items]      
Payments for Legal Settlements $ 2,100,000    
Settlement benefit (Note 3)   1,000,000  
Additional Royalties and Commissions, Accrual Interest Percentage   3.25%  
Additional Royalties and Commissions Payable, Installment Amount   100,000  
Accrued royalties and sales commissions (Note 3)   3,500,000  
Additional Annual Installment Includes In Other Current Liability   $ 100,000 $ 300,000