Leased Assets and Liabilities (Lease Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Lease Cost
Operating lease expense	$ 62,269	$ 54,718	$ 48,503
Finance lease expense
Amortization of leased assets	9,191	3,792	3,372
Interest on lease liabilities	2,826	949	700
Variable lease expense	33,924	21,413	23,188
Sublease income	(1,761)	(979)	(1,948)
Total expense	$ 106,449	$ 79,893	$ 73,815