Commitments and Contingencies (Details)	1 Months Ended	9 Months Ended
	Nov. 30, 2010	Sep. 30, 2011 USD ($)	Sep. 30, 2011 LegalMatter	Apr. 20, 2011 USD ($)	Feb. 11, 2011 USD ($)	Nov. 17, 2010 USD ($)	Jun. 26, 2009 USD ($)	Sep. 30, 2011 Intellectual Property Infringement Claims [Member] LegalMatter	Sep. 30, 2011 Other Contingencies [Member] USD ($)	Sep. 30, 2011 City of Sao Paulo Tax Claim [Member] USD ($)	Sep. 30, 2011 Brazilian Federal Tax Claims [Member] USD ($)	Sep. 30, 2011 Brazilian Federal Tax Claims [Member] Scenario, Previously Reported [Member] USD ($)
Loss Contingencies [Line Items]
Number of cases in litigation			343					8
Reserves for proceeding-related contingencies									$ 1,738,721
Number of loss contingency pending claims related to intellectual property infringement								1,759
Approximate additional amount related to asserted taxes and fines										5,900,000	2,800,000	5,100,000
Commitments and Contingencies (Textuals) [Abstract]
Aggregate amount for legal actions for which no loss amount has been accrued		2,660,672
Loss amount accrued for other legal actions		0
Daily non compliance penalty suspended upon injunction granted		5,300
Fine against Company's subsidiaries		3,300,000
Per defendant per day of alleged noncompliance		5,300
Amounts of probable loss		0		500,000
Remaining amount of probable loss not reserved		215,703
Total amount of claim including surcharges and interest					5,100,000
No of days to impose obligation to provide customer service	60 days
Penalty per day for non compliance						65,000	2,500
No Of Days Granted For Extension		30 days
Deposit with court		9,500,000
Deposit with court with current exchange rate		$ 5,100,000