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