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Stock-Based Compensation - Additional Information (Details)		1 Months Ended	3 Months Ended	12 Months Ended
	Jun. 19, 2020 USD ($) employee	Feb. 29, 2020 USD ($) shares	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield				0.00%
Unamortized compensation costs				$ 3,900,000
Expected recognition period (in years)				1 year 1 month 6 days
Stock-based compensation expense				$ 41,515,000	$ 26,241,000	$ 16,329,000
Number of shares granted (in shares) | shares				0
Consulting and Professional Services Agreement (“CPSA”)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense				$ 1,800,000	$ 0	$ 0
RSUs issued and unvested
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield				0.00%
Expected recognition period (in years)				2 years 2 months 12 days
Unrecognized RSU expense				$ 61,400,000
Number of shares eligible to vest (in shares) | shares				1,114,159	886,030	547,891
Number of shares granted (in shares) | shares				595,915	629,901
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unamortized compensation costs				$ 1,900,000
Expected recognition period (in years)				10 months 24 days
Performance shares | 2019 Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reversal of share-based compensation expense			$ 4,800,000
Number of employees impacted by modification | employee	10
Incremental compensation cost resulting from modification	$ 13,600,000
Stock-based compensation expense	$ 10,200,000
Performance shares | 2020 Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense				$ 1,400,000
Number of shares granted (in shares) | shares		133,834
Fair value at grant date		$ 11,000,000.0
Performance shares | Minimum | 2020 Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance threshold (as a percent)		19.70%
Performance target to be earned at performance threshold (as a percent)		50.00%
Performance shares | Maximum | 2020 Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance threshold (as a percent)		29.00%
Performance target to be earned at performance threshold (as a percent)		200.00%

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