Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) segment	Jan. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Number of operating segments | segment	1
Restricted cash	$ 0		$ 200
Deferred offering costs	0		$ 2,100
Operating lease right-of-use assets	10,303
Operating lease liabilities	$ 11,091
Accounting Standards Update 2016-02
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Operating lease right-of-use assets		$ 12,500
Operating lease liabilities		$ 13,200