Condensed Consolidated Statements of Cash Flows - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (5,722,287)	$ (6,779,728)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	69,420	47,963
Gain on disposal of assets	0	(12,461)
Stock-based compensation expense	516,237	2,201,401
Non-cash interest	5,607	21,015
Change in fair value of contingent rights	12,665	4,422
Changes in operating assets and liabilities:
Prepaid expenses and other	(119,686)	40,840
Accounts payable	139,339	34,793
Accrued liabilities	51,694	(7,486)
Net cash used in operating activities	(5,047,011)	(4,449,241)
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from sale of furniture and equipment	0	158,446
Purchases of furniture and equipment	(405,849)	(159,244)
Net cash used in investing activities	(405,849)	(798)
CASH FLOWS FROM FINANCING ACTIVITIES
Stock issuance costs	0	(72,087)
Proceeds from sale of common stock	0	17,254,341
Proceeds from sale of common stock to be issued	0	6,274,000
Net cash provided by financing activities	0	23,456,254
Net (decrease) increase in cash and cash equivalents	(5,452,860)	19,006,215
Cash and cash equivalents at beginning of period	27,092,928	5,131,114
Cash and cash equivalents at end of period	21,640,068	24,137,329
Non-cash financing activity:
Partial settlement of contingent rights derivative	$ 0	$ 3,232,502