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Commitments and Contingencies (Details) | 3 Months Ended |  |  | 3 Months Ended |  | 3 Months Ended |  | 1 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2012 USD ($) LegalMatter | Jun. 26, 2009 USD ($) | Mar. 31, 2012 Intellectual Property Infringement Claims [Member] LegalMatter | Mar. 31, 2012 Other Contingencies [Member] USD ($) | Mar. 31, 2012 City of Sao Paulo Tax Claim [Member] USD ($) | Mar. 31, 2012 City of Sao Paulo Tax Claim [Member] BRL | Apr. 19, 2012 City of Sao Paulo Tax Claim [Member] USD ($) | Mar. 31, 2012 Brazilian Federal Tax Claims [Member] USD ($) | Mar. 31, 2012 Brazilian Federal Tax Claims [Member] BRL | Nov. 30, 2010 State of Sao Paulo Customer Service Level Claim [Member] | Nov. 17, 2010 State of Sao Paulo Customer Service Level Claim [Member] USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of legal actions pending | 444 |  | 8 |  |  |  |  |  |  |  |
Reserves for proceeding-related contingencies |  |  |  | $ 2,115,635 |  |  |  |  |  |  |
Loss contingency pending cases related to consumer courts | 2,077 |  |  |  |  |  |  |  |  |  |
Approximate additional amount related to asserted taxes and fines |  |  |  |  | 5,900,000 |  |  |  | 5,300,000 |  |
Total amount of claim including surcharges and interest |  |  |  |  |  |  | 5,800,000 |  |  |  |
Deposit with court |  |  |  |  |  | 9,500,000 |  |  |  |  |
No of days to impose obligation to provide customer service |  |  |  |  |  |  |  |  |  | 60 days |
Penalty per day for non compliance |  | 2,500 |  |  |  |  |  |  |  |  | 65,000
Deposit with court with current exchange rate |  |  |  |  | 5,200,000 |  |  | 2,900,000 |  |  |
Commitments and Contingencies (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |
Aggregate amount for legal actions for which no loss amount has been accrued | 2,713,854 |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |  |
Amount of reasonably possible loss | $ 219,527 |  |  |  |  |  |  |  |  |  |
Number of days granted for extension | 30 days |  |  |  |  |  |  |  |  |  |

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