Consolidated Statements of Changes in Redeemable Preferred Stock and Stockholders' Equity (Deficit) - USD ($)	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Series B Convertible Redeemable Preferred Stock	Series A Convertible Redeemable Preferred Stock
Redeemable preferred stock, beginning balance at Dec. 31, 2016					$ 8,022,219	$ 4,114,221
Redeemable preferred stock, beginning balance, shares at Dec. 31, 2016					970,238	638,416
Conversion of convertible redeemable preferred stock into common stock					$ (8,149,999)	$ (4,166,164)
Conversion of convertible redeemable preferred stock into common stock, shares					(970,238)	(638,416)
Accretion of issuance costs					$ 127,780	$ 51,943
Beginning balance at Dec. 31, 2016	$ (10,184,775)	$ 24,500	$ 1,147,946	$ (11,357,221)
Beginning balance, shares at Dec. 31, 2016		2,450,000
Issuance of common stock in connection with merger	6,978,916	$ 7,369	6,971,547
Issuance of common stock in connection with merger, shares		736,950
Conversion of convertible notes and accrued interest into common stock	5,674,452	$ 5,992	5,668,460
Conversion of convertible notes and accrued interest into common stock, shares		599,201
Conversion of convertible redeemable preferred stock into common stock	12,316,163	$ 16,087	12,300,076
Conversion of convertible redeemable preferred stock into common stock, shares		1,608,654
Accretion of issuance costs	(179,723)		(179,723)
Issuance of common stock, net of issuance costs and underwriting discount	21,506,842	$ 21,026	21,485,816
Issuance of common stock, net of issuance costs and underwriting discount, shares		2,102,628
Stock-based compensation	418,093		418,093
Net loss	(14,194,431)			(14,194,431)
Ending balance at Dec. 31, 2017	$ 22,335,537	$ 74,974	47,812,215	(25,551,652)
Ending balance, shares at Dec. 31, 2017	7,497,433	7,497,433
Reallocation for change in par value		$ (74,224)	74,224
Issuance of common stock, net of issuance costs and underwriting discount	$ 42,622,700	$ 256	42,622,444
Issuance of common stock, net of issuance costs and underwriting discount, shares		2,555,555
Issuance of common stock in connection with stock options	$ 87,659	$ 3	87,656
Issuance of common stock in connection with stock option, shares	34,375	34,375
Stock-based compensation	$ 1,318,153		1,318,153
Net loss	(21,280,891)			(21,280,891)
Ending balance at Dec. 31, 2018	$ 45,083,158	$ 1,009	$ 91,914,692	$ (46,832,543)
Ending balance, shares at Dec. 31, 2018	10,087,363	10,087,363