Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Operating Lease, Cost	$ 32,053	$ 33,360
Short-term Lease, Cost	5,069	3,557
Variable Lease, Cost	942	1,619
Finance Lease, Right-of-Use Asset, Amortization	2,564	2,550
Finance Lease, Interest Expense	1,551	1,438
Lease, Cost	$ 42,179	$ 42,524