Stock Based Compensation - Summary of Non-Cash Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash stock-based compensation	$ 59,749	$ 46,994	$ 33,519
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash stock-based compensation	8,789	6,504	4,744
2010 SIP and 2019 SIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash stock-based compensation	50,198	39,626	28,027
Performance Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash stock-based compensation	$ 762	$ 864	$ 748