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Consolidated Statements of Comprehensive Loss - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net loss from continuing operations	$ (36,415,026)	$ (32,260,663)	$ (25,986,692)
Other comprehensive income (loss)
Unrealized gains (losses) on marketable securities			1,356
Comprehensive loss from continuing operations	(36,415,026)	(32,260,663)	(25,985,336)
Discontinued operations:
Net loss from discontinued operations		(480,611)	(452,467)
Other comprehensive income (loss)	(18,031)	(186,711)	57,568
Comprehensive loss from discontinued operations	(18,031)	(667,322)	(394,899)
Comprehensive loss	$ (36,433,057)	$ (32,927,985)	$ (26,380,235)

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Other Comprehensive Income Loss Discontinued Operations Net Of Tax

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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. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount of income (loss) from continuing operations attributable to the parent. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests.

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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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