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SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details)	0 Months Ended	1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended	0 Months Ended		3 Months Ended	9 Months Ended	12 Months Ended					9 Months Ended
	Jul. 07, 2014 USD ($)	Jul. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2014 USD ($)	Dec. 31, 2013 USD ($)	Nov. 06, 2013 Convertible Promissory Notes USD ($)	Nov. 06, 2013 Convertible Promissory Notes EUR (€)	Sep. 30, 2014 Convertible Promissory Notes USD ($)	Sep. 30, 2014 Convertible Promissory Notes USD ($)	Dec. 31, 2013 Convertible Promissory Notes USD ($)	Sep. 30, 2014 Convertible Promissory Notes Sonkei USD ($)	Sep. 30, 2014 Convertible Promissory Notes Sonkei EUR (€)	Nov. 12, 2013 Convertible Promissory Notes Sonkei USD ($)	Nov. 12, 2013 Convertible Promissory Notes Sonkei EUR (€)	Sep. 30, 2014 8% Convertible Promissory Notes USD ($)
Significant Accounting Policies [Line Items]
Payment of initial upfront license fee		$ 22,000,000
Accrued collaborative expenses			1,386,493	1,386,493
Interest or penalties related to income taxes			0	0
Impairment of goodwill			0	0	0
Interest rate (as a percent)	8.00%					8.00%	8.00%	8.00%	8.00%				8.00%	8.00%
Face value						1,300,000		1,300,000	1,300,000		700,000	518,519	680,000	518,519
Accrued interest					24,276										100,000
Conversion price (in dollars per share)	$ 6.00					$ 3.50	€ 3.50								$ 6.00
Conversion of debt to common stock (in shares)	352,000														352,000
Decrease in fair value of the derivative liability				10,093						10,093
Remaining term						7 months	7 months			6 months
Discount rate (as a percent)						8.00%	8.00%			8.00%
Unamortized debt discount						2,000,000
Amortization of debt discount recorded as interest expense				$ 1,952,309				$ 0	$ 1,952,309

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Represents the amount of cash outflow for license fees paid during the period.

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Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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