Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2020	Jan. 01, 2020
Summary Of Significant Accounting Policies [Line Items]
Right-of-use assets		$ 5,897,000	$ 6,835,000	[1],[2]
Operating lease liabilities		15,442,000	2,251,000	[3]
Outstanding claim		0
Impairment of long-lived assets		$ 0
Tax positions, description		The Company determines whether it is more likely than not that a tax position will be sustained upon examination. The tax benefit to be recognized for any tax position that meets the more-likely-than-not recognition threshold is calculated as the largest amount of benefit that is greater than 50% likely of being realized upon ultimate settlement. If it is not more likely than not that a position will be sustained, none of the benefit attributable to the position is recognized.
Employee Stock Purchase Plan
Summary Of Significant Accounting Policies [Line Items]
Purchase of common stock through payroll deductions expressed in percentage of fair market value	85.00%	85.00%
Share based compensation, discount from market price		15.00%
Share based compensation arrangement by share based payment purchase period		180 days
ASU 2016-02
Summary Of Significant Accounting Policies [Line Items]
Right-of-use assets			6,800,000
Operating lease liabilities			17,700,000
Deferred rent			$ 10,900,000

[1] Represents capitalization of operating right-of-use assets

[2] Represents reclassification of deferred rent and incentives as a reduction to operating right-of-use assets

[3] Represents recognition of operating lease liabilities