CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY - USD ($)	Private Investment in Public Entities March 2018 Common Stock Common stock - voting	Private Investment in Public Entities March 2018 Additional Paid-in Capital	Private Investment in Public Entities March 2018 Series A Preferred Stock	Private Investment in Public Entities March 2018	Private investment in public entities with new investors Common Stock Common stock - voting	Private investment in public entities with new investors Additional Paid-in Capital	Private investment in public entities with new investors	Private investment in public entities with existing investors Common Stock Common stock - voting	Private investment in public entities with existing investors Additional Paid-in Capital	Private investment in public entities with existing investors	Common Stock Common stock - voting	Common Stock Common stock - non-voting	Additional Paid-in Capital	Deficit Accumulated During the Development Stage	Series A Preferred Stock	Total
Balance at Dec. 31, 2017											$ 6,271	$ 4,262	$ 79,655,191	$ (62,404,722)		$ 17,261,002
Balance (in shares) at Dec. 31, 2017											4,180,484	42,617,893
Increase (decrease) in Stockholders' Equity (Deficit)
Issuance of preferred stock and common stock in a private investment in public entities March 2018	$ 196	$ 4,999,804	$ 9,000,002	$ 5,000,000
Issuance of preferred stock and common stock in a private investment in public entities March 2018 (in shares)	1,960,794		5,524,926
Beneficial conversion feature of the series A convertible preferred stock March 2018													995,000		$ (995,000)	995,000
Deemed dividend on Series A convertible preferred stock March 2018													(995,000)		995,000	(995,000)
Issuance of common stock, March 2018					$ 72	$ 1,305,702	$ 1,305,774	$ 48	$ 750,052	$ 750,100
Issuance of common stock, March 2018 (in shares)					716,425			478,853
Issuance of common stock in exchange for redemption of convertible debt											$ 96		1,403,917			1,404,013
Issuance of common stock in exchange for redemption of convertible debt (in shares)											956,553
Issuance of common stock in exchange for services March 2018													6,425			6,425
Issuance of common stock in exchange for services March 2018 (in shares)											3,333
Issuance of common stock in exchange for payment of interest expense, March 2018											$ 29		704,696			704,725
Issuance of common stock in exchange for payment of interest expense, March 2018 (in shares)											285,694
Stock-based compensation													272,243			272,243
Net loss														(5,696,637)		(5,696,637)
Balance at Mar. 31, 2018											$ 6,712	$ 4,262	89,098,030	(68,101,359)		21,007,645
Ending Balance at Mar. 31, 2018															$ 9,000,002
Balance (in shares) at Mar. 31, 2018											8,582,136	42,617,893			5,524,926
Balance at Dec. 31, 2018											$ 2,460	$ 4,030	99,927,410	(94,550,779)		5,383,121
Beginning Balance at Dec. 31, 2018															$ 9,000,002	9,000,002
Balance (in shares) at Dec. 31, 2018											24,603,104	40,301,237			5,524,926
Increase (decrease) in Stockholders' Equity (Deficit)
Issuance of common stock, net of offering costs											$ 1,335		2,501,560			2,502,895
Issuance of common stock, net of offering costs (in shares)											13,333,333
Issuance of common stock in exchange of notes payable and accrued interest											$ 1,876		6,072,354			6,074,230
Issuance of common stock in exchange of notes payable and accrued interest (in shares)											18,764,637
Issuance of common stock in exchange of accrued interest, January 2018											$ 138		446,591			446,729
Issuance of common stock in exchange of accrued interest, January 2018 (in shares)											1,382,636
Issuance of common stock, net of offering costs, March 2019											$ 133		266,133			266,266
Issuance of common stock, net of offering costs, March 2019 (in shares)											1,331,332
Stock-based compensation													426,508			426,508
Net loss														(8,303,871)		(8,303,871)
Balance at Mar. 31, 2019											$ 5,942	$ 4,030	$ 109,640,556	$ (102,854,650)		6,795,878
Ending Balance at Mar. 31, 2019															$ 9,000,002	$ 9,000,002
Balance (in shares) at Mar. 31, 2019											59,415,042	40,301,237			5,524,926