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, 2015						$ 4,099,380
Redeemable preferred stock, beginning balance, shares at Dec. 31, 2015						638,416
Issuance of convertible redeemable preferred stock, net of issuance costs					$ 7,994,837
Issuance of convertible redeemable preferred stock, net of issuance costs, shares					970,238
Accretion of issuance costs					$ 27,382	$ 14,841
Redeemable preferred stock, ending balance at Dec. 31, 2016	$ 12,136,440				$ 8,022,219	$ 4,114,221
Redeemable preferred stock, ending balance, shares at Dec. 31, 2016					970,238	638,416
Beginning balance at Dec. 31, 2015	(3,506,793)	$ 24,500	$ 1,126,366	$ (4,657,659)
Beginning balance, shares at Dec. 31, 2015		2,450,000
Conversion of convertible notes and accrued interest into common stock	0
Accretion of issuance costs	(42,223)		(42,223)
Share-based compensation	63,803		63,803
Net loss	(6,699,562)			(6,699,562)
Ending balance at Dec. 31, 2016	$ (10,184,775)	$ 24,500	1,147,946	(11,357,221)
Ending balance, shares at Dec. 31, 2016	2,450,000	2,450,000
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
Redeemable preferred stock, ending balance at Dec. 31, 2017	$ 0				$ 0	$ 0
Redeemable preferred stock, ending balance, shares at Dec. 31, 2017					0	0
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 underwriters discount	21,506,842	$ 21,026	21,485,816
Issuance of common stock, net of issuance costs and underwriters discount, shares		2,102,628
Share-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
Issuance of common stock, net of issuance costs, shares		2,102,628