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Summary of Significant Accounting Policies (Details) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2012 | Mar. 31, 2011 | Dec. 31, 2011
Total operations |  |  |
Net Revenue | $ 83,736,006 | $ 61,459,668 |
Assets | 376,569,456 |  | 355,931,436
Liabilities | (134,889,640) |  | (132,752,420)
Venezuelan Subsidiary [Member] |  |  |
Total operations |  |  |
Net Revenue | 11,241,572 | 6,770,453 |
Assets | 33,729,830 |  | 31,074,871
Liabilities | (9,941,851) |  | (10,414,881)
Net Assets | $ 23,787,979 |  | $ 20,659,990

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