Nature of the Business and Basis of Presentation - Additional Information (Detail) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021 USD ($) Subsidiary shares	Dec. 31, 2020 USD ($) shares
Initial Public Offering [Line Items]
Number of wholly owned subsidiaries | Subsidiary	2
Stock available to be sold under sales agreement	$ 62.1
Open Market Sale Agreement [Member]
Initial Public Offering [Line Items]
Payments of other offering expenses		$ 0.2
Payment of issuance commissions		1.1
Issuance of common, shares | shares	0
Gross proceeds from issuance of public offering		$ 37.9
Market sale aggreement of common stock	$ 100.0
Issuance of common, shares | shares		2,863,163