Stockholders' Equity - Additional Information (Details) - USD ($)				12 Months Ended
	Dec. 27, 2017	Dec. 14, 2017	Sep. 19, 2017	Dec. 31, 2017	Dec. 31, 2016	Sep. 18, 2017
Stockholders Equity [Line Items]
Conversion of convertible notes payable and accrued interest to common stock, value			$ 5,674,452	$ 5,674,452	$ 0
Conversion of convertible notes payable and accrued interest to common stock, shares			599,201
Issuance of common stock, net of issuance costs, shares			1,055,961
Shares issued price per share			$ 9.47
Proceeds from issuance of common stock			$ 10,000,000	21,506,842	$ 0
Unrecognized compensation expense				$ 2,500,000
Share based compensation arrangement by share based payment award, Average remaining vesting period				3 years 3 months 18 days
Weighted average grant date fair value of options granted				$ 8.25	$ 1.32
General and Administrative
Stockholders Equity [Line Items]
Stock based compensation expense				$ 111,000
Research and Development
Stockholders Equity [Line Items]
Stock based compensation expense				$ 307,000
2010 Stock Incentive Plan
Stockholders Equity [Line Items]
Number of common stock authorized for issuance			470,170			113,465
Options contractual term			10 years
Number of underlying shares cancelled			22,061
Available for the grant of future awards				159,572
2010 Stock Incentive Plan | Executive Officers and Employees
Stockholders Equity [Line Items]
Share-based compensation arrangement by share-based payment award, stock options vesting period			4 years
2010 Stock Incentive Plan | Executive Officers and Employees | One-year Anniversary of the Grant Date
Stockholders Equity [Line Items]
Share-based compensation arrangement by share-based payment award, Vesting percentage			25.00%
2010 Stock Incentive Plan | Executive Officers and Employees | Quarterly over Remaining Three Years
Stockholders Equity [Line Items]
Share-based compensation arrangement by share-based payment award, Vesting percentage			75.00%
2013 Stock Incentive Plan
Stockholders Equity [Line Items]
Number of common stock authorized for issuance			165,000
Options contractual term			10 years
Underwritten public offering and over-allotment option
Stockholders Equity [Line Items]
Issuance of common stock, net of issuance costs, shares	130,000	916,667
Shares issued price per share	$ 12.00	$ 12.00
Proceeds from issuance of common stock	$ 1,600,000	$ 11,000,000		$ 1,100,000
Registrant
Stockholders Equity [Line Items]
Common stock held by existing shareholders			736,950
Series A Convertible Redeemable Preferred Stock
Stockholders Equity [Line Items]
Number of preferred stock converted to common stock			638,416
Series B Convertible Redeemable Preferred Stock
Stockholders Equity [Line Items]
Number of preferred stock converted to common stock			970,238