CONDENSED STATEMENTS OF CASH FLOWS - USD ($)	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash Flows from Operating Activities
Net loss	$ (11,057,169)	$ (12,160,729)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation expense	32,463
Gain/loss on disposal of fixed assets		34,549
Materials cost in connection with license activity		6,287
Stock-based compensation	478,442	828,049
Amortization of debt issuance costs and debt discount	396,107	2,592,956
Change in fair value of warrants		501,617
Changes in assets and liabilities
Accounts receivable - trade	50,904	(8,698)
Inventory	(46,356)	(58,100)
Prepaid expenses	(331,124)	(329,774)
Deferred finance charges		(197,524)
Other long-term assets		(122,163)
Due from parent	(269,863)	(20,790)
Deferred revenue	(5,701)	312,910
Deferred rent	3,478	1,660
License fee payable	(425,000)	(675,000)
Accounts payable	(151,912)	(421,551)
Accrued expenses	(360,776)	(669,634)
Total cash used in operations	(11,686,507)	(10,385,935)
Cash Flows from Investing Activities
Purchase of equipment	(104,207)	(23,300)
Sale of equipment		20,600
Change in restricted cash	2,011,420	(4,500,000)
Total cash provided by (used in) investing activities	1,907,213	(4,502,700)
Cash Flows from Financing Activities
Proceeds from issuance of long-term debt		5,865,567
Repayment of long-term debt	(2,011,420)
Proceeds from issuance of redeemable convertible notes payable, net		1,250,000
Repayment of convertible notes payable		(100,000)
Repayment of notes payable		(1,000,000)
Proceeds from issuance of common stock in initial public offering, net of commissions and discounts		18,810,484
Deferred offering costs		(417,775)
Proceeds from issuance of common stock in a follow-on secondary offering, net of commissions and discounts	4,130,102
Proceeds from issuance of common stock in a private investment in public entities, net of commissions, discounts	1,776,492
Proceeds from the exercise of common stock options		12,650
Total Cash Provided by Financing Activities	3,895,174	24,420,926
Net increase in cash and cash equivalents	(5,884,120)	9,532,291
Cash and cash equivalents, beginning of period	7,697,531	845,192
Cash and cash equivalents, end of period	1,813,411	10,377,483
Supplemental Schedule of Non-Cash Financing and Investing Activities
Interest paid on long-term debt	$ 382,810	23,100
Offering costs not paid during the nine months		1,401,253
Accretion of redeemable convertible preferred stock		346,374
Abatement of license fee payable to Napo		250,000
Conversion of convertible preferred stock to common stock		7,651,288
Conversion of preferred stock warrant liability to common stock warrants		1,150,985
Conversion of convertible notes to common stock		$ 2,100,000