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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Feb. 28, 2013 | Jun. 30, 2013 ExchangeRate | Mar. 31, 2013 | Jun. 30, 2012 | Jun. 30, 2013 ExchangeRate | Jun. 30, 2012 | Dec. 31, 2012
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Percentage of revenues and operating costs generated in foreign operations |  |  |  |  | 99.60% | 99.40% |
Long-lived assets located in the foreign operations |  | $ 136,822,517 |  |  | $ 136,822,517 |  | $ 98,569,068
Exchange rate used to re-measure transactions |  | 6.30 |  |  | 6.30 |  |
Foreign currency loss | 6,400,000 |  | 6,400,000 |  | 6,420,929 |  |
Percentage of consolidated net assets |  | 14.70% |  |  | 14.70% |  |
Percentage of consolidated cash and investments |  | 13.00% |  |  | 13.00% |  |
Percentage of tax benefits obtained from software development law |  | From fiscal year 2008, the Company's Argentine subsidiary is beneficiary of a software development law. Part of the benefits obtained from being beneficiary of the aforementioned law is a relief of 60% of total income tax determined in each year, until fiscal year 2014. |  |  |  |  |
Percentage on relief of total income tax |  | 60.00% |  |  |  |  |
Aggregate tax benefit, total |  | $ 2,275,176 |  | $ 2,153,761 | $ 4,769,024 | $ 4,125,240 |
Aggregate per share effect of the Argentine tax holiday |  | $ 0.05 |  | $ 0.05 | $ 0.11 | $ 0.09 |
Tax holidays |  |  |  |  | 5 years |  |
SITME [Member] |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Exchange rate used to re-measure transactions |  | 5.30 |  |  | 5.30 |  |
Minimum [Member] |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Exchange rate used to re-measure transactions |  | 4.30 |  |  | 4.30 |  |
Minimum [Member] | SITME [Member] |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Exchange rate used to re-measure transactions |  | 5.30 |  |  | 5.30 |  |
Maximum [Member] |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Exchange rate used to re-measure transactions |  | 6.30 |  |  | 6.30 |  |
Maximum [Member] | SITME [Member] |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Exchange rate used to re-measure transactions |  | 6.30 |  |  | 6.30 |  |

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