| Commitments and Contingencies (Details Textual) (USD $) | 1 Months Ended | 12 Months Ended | |
|---|---|---|---|
| Dec. 20, 2012 | Dec. 31, 2012 | Mar. 31, 2013 | |
| 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 Royalties and Commissions Payable, Number Of Installements | 4 | ||
| Additional Annual Installment Includes In Other Current Liability | 100,000 | ||
| Additional Annual Installment Includes In Other Long Term Obligation | $ 300,000 | 
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- Definition It defines the portion of additional annual installment includes in other current Liability. No definition available. 
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- Definition It defines the portion of additional annual installment includes In other long term obligation. No definition available. 
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- Definition Represents the interest rate percentage computed on royalty installment amount due. No definition available. 
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- Definition Represents additional royalties and commissions installment amount. No definition available. 
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- Definition Number of installments for additional royalties and commissions payable. No definition available. 
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- Definition Represents the amount of realized benefit as a consequence of a reduction of the previously recorded accrued royalties and commission obligation. No definition available. 
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- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for royalties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition The amount of cash paid for the settlement of litigation or for other legal issues during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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