Leases - Other Information Related to Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating
Cash paid for amounts included in the measurement of lease liabilities	$ 40,452	$ 43,207
Lease assets obtained in exchange for lease obligations	$ 40,557	$ 51,188
Weighted average remaining lease term (years)	4 years 6 months	4 years 8 months 12 days
Weighted average discount rate	3.70%	4.40%
Finance
Cash paid for amounts included in the measurement of lease liabilities	$ 1,913	$ 3,076
Lease assets obtained in exchange for lease obligations	$ 0	$ 0
Weighted average remaining lease term (years)	2 years 1 month 6 days	2 years 6 months
Weighted average discount rate	4.00%	4.70%