Retirement Plans - Summary of Net Pension and Postretirement Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Post-Retirement Life Insurance Plan
Net pension expense (income)
Service cost	$ 1	$ 1	$ 1
Interest cost	80	122	170
Amortization of unrecognized loss	0	(84)	(166)
Net expense	$ 81	$ 39	$ 5
Benefit obligation assumptions:
Discount rate	2.66%	2.27%	3.09%
Pension income/expense assumptions:
Discount rate	2.27%	3.09%	4.26%
UNITED STATES
Net pension expense (income)
Service cost	$ 0	$ 0	$ 0
Interest cost	2,861	5,773	7,724
Expected return on plan assets	(474)	(9,817)	(12,187)
Amortization of unrecognized loss	3,703	6,488	5,246
Settlement charges	126,269	0	0
Net expense	$ 132,359	$ 2,444	$ 783
Benefit obligation assumptions:
Discount rate	2.46%	2.26%	3.15%
Pension income/expense assumptions:
Discount rate	2.10%	3.15%	4.30%
Expected return on plan assets	1.44%	3.76%	4.61%
Foreign Plan
Net pension expense (income)
Service cost	$ 26	$ 31	$ 37
Interest cost	17	28	31
Expected return on plan assets	(17)	(16)	(17)
Amortization of unrecognized loss	184	174	170
Settlement charges	0	0	0
Net expense	$ 210	$ 217	$ 221
Benefit obligation assumptions:
Discount rate	0.63%	0.63%	1.00%
Rate of compensation increase		3.00%	3.00%
Pension income/expense assumptions:
Discount rate	0.63%	0.63%	1.13%
Expected return on plan assets	0.63%	0.63%	1.13%
Rate of compensation increase		3.00%	3.00%