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Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net income	$ 28,958,487	$ 8,549,791	$ 11,093,191
Cash flow hedges
Reclassification adjustment	(54,340)	527,627	481,515
Other comprehensive income/(loss)	(54,340)	527,627	481,515
Comprehensive income	$ 28,904,147	$ 9,077,418	$ 11,574,706

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The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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Net of tax amount of other comprehensive income (loss) attributable to both parent entity and noncontrolling interest.

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Net of tax amount of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income. Also includes reclassification adjustments of an entity's share of an equity investee's deferred hedging gain (loss) realized in net income.

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