Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating Lease, Right-of-Use Asset	$ 76,276	$ 79,773
Operating Lease, Liability, Current	16,243	17,049
Operating Lease, Liability, Noncurrent	66,823	68,919
Total operating lease liability	$ 83,066	$ 85,968
Operating Lease, Weighted Average Remaining Lease Term	5 years 7 months 6 days	5 years 10 months 24 days
Operating Lease, Weighted Average Discount Rate, Percent	4.50%	4.90%