Summary of Significant Accounting Policies - Income Taxes (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Oct. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Income Tax Examination [Line Items]
Provision for income taxes		$ 8,737	$ 6,751
Additions based on tax positions related to prior years	$ 26,400
Tax Year 2016
Income Tax Examination [Line Items]
Provision for income taxes	6,100
Tax Year 2017
Income Tax Examination [Line Items]
Provision for income taxes	8,500
Tax Year 2018
Income Tax Examination [Line Items]
Provision for income taxes	11,900
Total Tax Years 2016-2018
Income Tax Examination [Line Items]
Provision for income taxes	$ 26,500