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Consolidated Statements of Comprehensive Income - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net income	$ 2,566,678	$ 12,685,826	$ 21,217,193
Cash flow hedges
Effective portion of changes in fair value of interest swap contracts	(100,268)	(293,020)
Reclassification adjustment		49,471	(67,849)
Other comprehensive loss	(100,268)	(243,549)	(67,849)
Comprehensive income	$ 2,466,410	$ 12,442,277	$ 21,149,344

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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