Subsequent Events - Additional Information (Detail) - USD ($)		6 Months Ended
	Jul. 16, 2020	Jun. 30, 2020
Subsequent Event [Line Items]
Proceeds from issuance of common stock in at the market offering, net of offering costs		$ 22,780,729
Subsequent Event [Member] | Public Offering [Member]
Subsequent Event [Line Items]
Gross proceeds from offering including exercise of underwriter's option	$ 132,200,000
Subsequent Event [Member] | Public Offering [Member] | Pre-Funded Warrants [Member]
Subsequent Event [Line Items]
Number of securities called by warrants or rights	1,630,436
Exercise price of warrants or rights	$ 0.0001
Purchase price of warrants issued	$ 22.9999
Ownership percentage on exercise of warrants without notice, minimum	4.99%
Ownership percentage on exercise of warrants with notice, maximum	19.99%
Notice period to increase ownership percentage on exercise of warrants	61 days
Subsequent Event [Member] | Public Offering [Member] | Common Stock [Member]
Subsequent Event [Line Items]
Shares of common stock sold	3,369,564
Public offering price, per share	$ 23.00
Subsequent Event [Member] | Over-Allotment Option [Member] | Common Stock [Member]
Subsequent Event [Line Items]
Shares of common stock sold	750,000
Proceeds from issuance of common stock in at the market offering, net of offering costs	$ 124,000,000