INCOME TAXES (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets (liabilities):
Net operating loss carryforwards	$ 95,329,928	$ 68,700,379
Research and development credit	7,326,715	4,962,298
Noncash compensation	12,915,672	12,087,968
Other	599,514	608,205
Deferred tax asset, excluding valuation allowance	116,171,829	86,358,850
Less valuation allowance	(116,171,829)	(86,358,850)
Net deferred tax assets	$ 0	$ 0