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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

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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