Nature of Business and Basis of Presentation - Additional Information (Details)			3 Months Ended
	Apr. 02, 2018 USD ($) $ / shares shares	Mar. 12, 2018	Mar. 31, 2018 USD ($)	May 14, 2018 shares
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Proceeds from issuance of common stock | $			$ 69,263
Reverse stock split ratio of issued and outstanding shares of common stock			one-for-5.263
Reverse stock split ratio of issued and outstanding shares of common stock, conversion		5.263
Reverse stock split effective date			Mar. 16, 2018
Subsequent Event
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Convertible preferred shares converted to common stock	24,168,656
Initial Public Offering | Subsequent Event
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Shares issued and sold	10,350,000
Common stock at a public offering price | $ / shares	$ 16.00
Proceeds from issuance of common stock | $	$ 165,600,000
Convertible preferred shares converted to common stock	24,168,656
Preferred stock outstanding				0