Leases - Supplemental Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Leases [Abstract]
Operating lease right of use assets	$ 67,586		$ 76,090
Operating lease liabilities	76,592		$ 85,556
Operating cash outflow from operating leases	$ 15,512	$ 10,946
Operating lease right-of-use asset, statement of financial position [Extensible List]	Other assets		Other assets
Operating lease liability, statement of financial position [Extensible List]	Accrued Liabilities and Other Liabilities		Accrued Liabilities and Other Liabilities