Summary of Significant Accounting Policies - Company's Income from Investments Held in Employee Deferred Compensation Trusts (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accounting Policies [Abstract]
Dividend income	$ (295)	$ (294)
Realized and unrealized (gains) losses	30,296	(11,694)
(Income) loss from investments held in employee deferred compensation trusts	$ 30,001	$ (11,988)