Stockholders Deficit - Additional Information (Details) - USD ($)					1 Months Ended		3 Months Ended			6 Months Ended
	Jan. 31, 2018	Jan. 29, 2018	Jun. 30, 2017	Apr. 30, 2017	Jun. 30, 2018	Jan. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 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 from the ATM Offering								$ 20,200,000
Accelerated vesting of stock options					46,613
Options extended exercise period					1 year
Incremental stock-based compensation expense							$ 79,400			$ 79,400
Stock-based compensation							241,920		$ 417,937	1,385,378	$ 814,583
Selling, General and Administrative
Class Of Stock [Line Items]
Stock-based compensation							173,666		$ 294,591	1,275,658	$ 574,174
Restricted Stock Units R S U
Class Of Stock [Line Items]
Unrecognized compensation expense					$ 70,313		70,313			$ 70,313
Compensation expense period expected to be recognized										2 years 6 months 21 days
Issuance of shares granted										269,551
Restricted stock grant date fair value										$ 3.82
Restricted Stock Units R S U | Executive Officers
Class Of Stock [Line Items]
Issuance of shares granted		259,551
Restricted stock grant date fair value		$ 3.84
Restricted Stock Units R S U | Selling, General and Administrative | Executive Officers
Class Of Stock [Line Items]
Stock-based compensation							1,000,000			$ 1,000,000
Two Thousand Fourteen Equity Incentive Plan | Employee Stock Option
Class Of Stock [Line Items]
Unrecognized compensation expense					$ 937,490		$ 937,490			$ 937,490
Compensation expense period expected to be recognized										2 years 11 months 23 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