Stockholders Deficit - Additional Information (Details) - USD ($)					1 Months Ended	3 Months Ended
	Jan. 31, 2018	Jan. 29, 2018	Jun. 30, 2017	Apr. 30, 2017	Jan. 31, 2018	Mar. 31, 2018	Mar. 31, 2017
Class Of Stock [Line Items]
Issuance of common stock from the ATM Offering, Shares						5,733,314
Gross proceeds from issuance of common stock						$ 21,100,000
Sales commission						600,000
Other offering expenses paid						200,000
Net proceeds from issuance of common stock						20,200,000
Stock-based compensation						1,143,458	$ 396,646
Selling, General and Administrative
Class Of Stock [Line Items]
Stock-based compensation						1,101,992	$ 279,583
Restricted Stock Units R S U
Class Of Stock [Line Items]
Unrecognized compensation expense						$ 44,943
Compensation expense period expected to be recognized						1 year 7 months 2 days
Issuance of shares granted		259,551				259,551
Restricted stock grant date fair value		$ 3.84				$ 3.84
Restricted Stock Units R S U | Selling, General and Administrative
Class Of Stock [Line Items]
Stock-based compensation						$ 1,000,000
Two Thousand Fourteen Equity Incentive Plan | Employee Stock Option
Class Of Stock [Line Items]
Unrecognized compensation expense						$ 584,806
Compensation expense period expected to be recognized						1 year 9 months 29 days
Underwritten Public Offering
Class Of Stock [Line Items]
Common stock price per share	$ 2.90				$ 2.90
Issuance of common stock from the ATM Offering, Shares					13,915,000
Net proceeds from initial public offering after underwriters' discounts, commissions and offering expenses					$ 37,700,000
Over-Allotment Option
Class Of Stock [Line Items]
Issuance of common stock from the ATM Offering, Shares					1,815,000
Common Stock
Class Of Stock [Line Items]
Issuance of common stock from the ATM Offering, Shares						300,000
Gross proceeds from issuance of common stock						$ 600,000
Sales Agreement
Class Of Stock [Line Items]
Common stock price per share				$ 0.001
Common stock aggregate offering price	$ 23,000,000		$ 40,000,000	$ 20,000,000