The Company and Nature of Business (Details) $ / shares in Units, $ in Millions		1 Months Ended
	Oct. 16, 2018 USD ($) $ / shares shares	Oct. 31, 2018
Subsidiary, Sale of Stock [Line Items]
Reverse stock split ratio		0.0556
Common stock issued upon conversion of redeemable convertible preferred stock (in shares)	12,066,654
Adjustments to additional paid-in capital related to warrants | $	$ 1.2
IPO
Subsidiary, Sale of Stock [Line Items]
Number of shares issued in IPO (in shares)	8,280,000
IPO share price (in dollars per share) | $ / shares	$ 15.00
Net proceeds from IPO | $	$ 113.4
Common Stock
Subsidiary, Sale of Stock [Line Items]
Warrants to purchase shares of stock (in shares)	160,657
Preferred Stock Warrants | Redeemable Convertible Preferred Stock
Subsidiary, Sale of Stock [Line Items]
Number of warrants converted (in shares)	156,550