Subsequent Events - Additional Information (Details) - Subsequent Event - Underwritten Public Offering $ / shares in Units, $ in Millions	1 Months Ended
	Apr. 30, 2019 USD ($) $ / shares shares
Subsequent Event [Line Items]
Common stock, shares, issued and sold | shares	4,124,475
Common stock,public offering price | $ / shares	$ 12.00
Proceeds from issuance of initial public offering | $	$ 46.2