Common Stock - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020	Sep. 01, 2020
Class Of Stock [Line Items]
Purchase of treasury stock	$ 125,013	$ 197,600
Class A Common Stock [Member]
Class Of Stock [Line Items]
Authorization of share repurchase			$ 300,000
Authorization of share repurchase, remaining available amount	$ 259,200	$ 259,200	$ 384,200
Treasury Stock [Member]
Class Of Stock [Line Items]
Purchase of treasury stock, shares	1,300,000	2,250,000
Purchase of treasury stock	$ 125,013	$ 197,600
Treasury Stock [Member] | Class A Common Stock [Member]
Class Of Stock [Line Items]
Purchase of treasury stock	$ 125,000	$ 197,600