Leases - Supplemental Operating Lease Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Leases [Abstract]
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 1,864	$ 81,133
Operating Lease, Weighted Average Remaining Lease Term	11 years 4 months 24 days	11 years 9 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	4.06%	4.26%