Retirement Plans - Net Pension Expense Domestic and Foreign (Details) - Pension Plans - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net pension expense (income)
Total expense, net	$ 65	$ 21,823	$ 130	$ 23,780
UNITED STATES
Net pension expense (income)
Service cost	0	0	0	0
Interest cost	5	1,218	10	2,471
Expected return on plan assets	0	(1,058)	0	(2,171)
Amortization of loss	8	1,550	16	3,317
Settlement charges	0	20,063	0	20,063
Total expense, net	13	21,773	26	23,680
Foreign Plan
Net pension expense (income)
Service cost	6	6	12	12
Interest cost	4	4	8	8
Expected return on plan assets	(3)	(3)	(6)	(6)
Amortization of loss	45	43	90	86
Settlement charges	0	0	0	0
Total expense, net	$ 52	$ 50	$ 104	$ 100