Summary of Significant Accounting Policies - Additional Information (Details)	9 Months Ended
	Sep. 30, 2020 USD ($) Segment	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of operating segments | Segment	1
Impairment losses on long-lived assets	$ 0	$ 0
ASU 2018-13
Summary Of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adopted	true
Change in accounting principle, accounting standards update, adoption date	Jan. 01, 2020
Change in accounting principle, accounting standards update, immaterial effect	true
Money Market Funds
Summary Of Significant Accounting Policies [Line Items]
Cash equivalents	$ 52,200,000		$ 22,800,000