RELATED PARTY TRANSACTIONS (Details Narrative)	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($) ft² shares	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) ft² shares	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($) shares
Related Party Transaction [Line Items]
Other research and development	$ 25,334,762	$ 20,878,108	$ 71,150,033	$ 45,075,097
Prepaid Research And Development	$ 5,022,846		$ 5,022,846		$ 5,678,755
Common stock issued | shares	70,693,576		70,693,576		56,820,422
LFB License Agreement [] [Member]
Related Party Transaction [Line Items]
Other research and development	$ 1,800,000	1,900,000	$ 2,300,000	4,300,000
Accounts Payable	0		0		$ 400,000
Prepaid Research And Development	0		0		1,300,000
Shared Services Agreement [Member]
Related Party Transaction [Line Items]
Costs and Expenses, Related Party	300,000	300,000	1,000,000	500,000
Office Agreement [Member]
Related Party Transaction [Line Items]
Accounts Payable	131,000		131,000
Average Annual Rental Payments	$ 1,100,000		$ 1,100,000
Percentage of Occupancy	45.00%		45.00%
Area of Land | ft²	24,000		24,000
Operating Lease, Initial Commitment Period			15 years
Rent expense			$ 900,000
Deferred rent	$ 1,300,000		1,300,000
Build out costs			30,000
JBET Agreement [Member]
Related Party Transaction [Line Items]
Accounts Payable	$ 200,000		$ 200,000		$ 800,000
Sublicense Fee paid				1,000,000
Opus [Member]
Related Party Transaction [Line Items]
Costs and Expenses, Related Party		$ 20,000		$ 100,000