CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($)	Private Investment in Public Entities June 2016 Common Stock Common stock - voting	Private Investment in Public Entities June 2016 Additional Paid-in Capital	Private Investment in Public Entities June 2016	Private Investment in Public Entities Common Stock Common stock - voting	Private Investment in Public Entities Additional Paid-in Capital	Private Investment in Public Entities	Private Investment in Public Entities June 2017 Common Stock Common stock - voting	Private Investment in Public Entities June 2017 Additional Paid-in Capital	Private Investment in Public Entities June 2017	Private Investment in Public Entities November 2017 Common Stock Common stock - voting	Private Investment in Public Entities November 2017 Additional Paid-in Capital	Private Investment in Public Entities November 2017	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 July 2018 Common Stock Common stock - voting	Private Investment in Public Entities July 2018 Additional Paid-in Capital	Private Investment in Public Entities July 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	October 2018 Equity Financing Common Stock Common stock - voting	October 2018 Equity Financing Additional Paid-in Capital	October 2018 Equity Financing	September 2018 L2 convertible note payable Common Stock Common stock - voting	September 2018 L2 convertible note payable Additional Paid-in Capital	September 2018 L2 convertible note payable	Office lease extension agreement Additional Paid-in Capital	Office lease extension agreement	Common Stock Common stock - voting	Common Stock Common stock - non-voting	Additional Paid-in Capital Common stock - voting	Additional Paid-in Capital Common stock - non-voting	Additional Paid-in Capital	Deficit Accumulated During the Development Stage	Series A Preferred Stock	Common stock - voting	Common stock - non-voting	Total
Balance at Dec. 31, 2016																																		$ 93				$ 37,981,829	$ (40,436,108)				$ (2,454,185)
Balance (in shares) at Dec. 31, 2016																																		933,809
Increase (decrease) in Stockholders' Equity (Deficit)
Issuance of common stock in a private investment in public entities offering, net of offering costs of $72,710 and $6,000	$ 26	$ 2,314,347	$ 2,314,374				$ 1	$ 93,999	$ 94,000
Issuance of common stock in a private investment in public entities offering, net of offering costs of $72,710 and $6,000 (in shares)	264,819						13,333
Issuance of common stock through a stock purchase agreement with a private investor, net of offering costs of $44,738 November 2017										$ 34	$ 555,228	$ 555,262
Issuance of common stock through a stock purchase agreement with a private investor, net of offering costs of $44,738 November 2017 (in shares)										340,000
Issuance of common stock				$ 27	$ 400,973	$ 401,000																												$ 22				2,999,978					3,000,000
Issuance of common stock (in shares)				267,333																														216,216
Issuance of common stock in the merger																																		$ 15	$ 4,317	$ 1,278,154	$ 24,172,725				$ 1,278,169	$ 24,177,042
Issuance of common stock in the merger (in shares)																																		152,163	43,173,288
Issuance of common stock in a follow-on offering registration statement October 2017, net of commissions and offering costs of $763,502																																		$ 145				3,573,853					3,573,998
Issuance of common stock in a follow-on offering registration statement October 2017, net of commissions and offering costs of $763,502 (in shares)																																		1,445,833
Issuance of warrants in the merger																																						630,859					630,859
Issuance of stock options in the merger																																						5,691					5,691
Issuance of RSUs in the merger																																						3,300,555					3,300,555
Issuance of common stock in exchange of warrants																																		$ 6				386,328					386,334
Issuance of common stock in exchange of warrants (in shares)																																		60,556
Warrants, issued in conjunction with debt extinguishment																																						207,713					207,713
Issuance of common stock in exchange for vested restricted stock units (in shares)																																		914
Issuance of common stock in exchange for redemption of convertible debt																																		$ 43				900,320					900,363
Issuance of common stock in exchange for redemption of convertible debt (in shares)																																		432,806
Issuance of common stock in exchange for services																																		$ 2				43,827					$ 43,829
Issuance of common stock in exchange for services (in shares)																																		15,676
Conversion of non-voting common stock to voting common stock																																		$ 4	$ (55)			51
Conversion of non-voting common stock to voting common stock (in shares)																																		37,026	(555,395)
Shares issued from pre-funded warrants (in shares)																																											106,376
Stock-based compensation																																						814,613					$ 814,613
Net loss																																							(21,968,614)				(21,968,614)
Balance at Dec. 31, 2017																																		$ 418	$ 4,262			79,661,044	(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 in a private investment in public entities offering, net of offering costs of $72,710 and $6,000																	$ 47	$ 624,850	$ 624,897	$ 72	$ 1,305,702	$ 1,305,774	$ 48	$ 750,052	$ 750,100				$ 7	$ 47,993	$ 48,000
Issuance of common stock in a private investment in public entities offering, net of offering costs of $72,710 and $6,000 (in shares)																	470,781			716,425			478,853						75,000
Issuance of warrants in the merger																											$ 23,894	$ 23,894		$ 118,149	$ 118,149	$ 493,688	$ 493,688
Issuance of common stock in exchange for redemption of convertible debt																																		$ 96				1,607,325					1,607,421
Issuance of common stock in exchange for redemption of convertible debt (in shares)																																		956,553
Issuance of common stock in exchange for services																																						6,425					6,425
Issuance of common stock in exchange for services (in shares)																																		3,333
Issuance of common stock in exchange for payment of interest expense July 2018																																		$ 29				704,696					704,725
Issuance of common stock in exchange for payment of interest expense (in shares) July 2018																																		285,694
Conversion of non-voting common stock to voting common stock																																		$ 15	$ (232)			217
Conversion of non-voting common stock to voting common stock (in shares)																																		154,443	(2,316,656)
Issuance of common stock in lieu of interest July 2018																																		$ 32				479,776					479,808
Issuance of common stock in lieu of interest (in shares) July 2018																																		320,743
Fractional common stock shares repurchased																																						(30)					$ (30)
Shares issued in S-1 offering, net of issuance costs																										$ 1,157	5,025,293	5,026,450
Shares issued in S-1 offering, net of issuance costs (in shares)																										11,575,001
Shares issued from pre-funded warrants																										$ 343	$ 2,054,658	$ 2,055,001
Shares issued from pre-funded warrants (in shares)																										3,425,000																	2,166,588
Stock-based compensation																																						2,023,874					$ 2,023,874
Net loss																																							(32,146,057)				(32,146,057)
Balance at Dec. 31, 2018																																		$ 2,460	$ 4,030			$ 99,927,410	$ (94,550,779)				5,383,121
Ending 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