Leases (Components Of Lease Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Lessee, Lease, Description [Line Items]
Operating lease expense	$ 3,474	$ 4,157
Short-term lease expense	13,919	14,444
Lease expense, gross	17,393	18,601
Less: Sublease income	194	190
Total lease expense	$ 17,199	$ 18,411
Maximum
Lessee, Lease, Description [Line Items]
Short term lease, lease term	1 year