Employee Benefit Plans - Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net periodic benefit cost [Abstract]
Settlement and curtailment impact	$ (1,167)	$ (18)	$ (806)
Employee benefit plan expense	11,897	7,205	5,844
Non-Qualified Supplemental Benefits | Non-Qualified Supplemental Benefits
Net periodic benefit cost [Abstract]
Service cost	1,561	1,272	1,942
Interest cost	1,232	1,765	2,670
Expected return on plan assets	0	0	0
Prior service cost (credit)	1,531	1,695	2,811
Recognized actuarial loss (gain)	(1,672)	(1,857)	(2,280)
Settlement and curtailment impact	(743)	0	0
Employee benefit plan expense	1,909	2,875	5,143
United States | Qualified Defined Benefits | Qualified Defined Benefits
Net periodic benefit cost [Abstract]
Service cost	7,134	6,824	7,016
Interest cost	13,605	16,272	19,026
Expected return on plan assets	(28,980)	(31,475)	(34,136)
Prior service cost (credit)	212	227	303
Recognized actuarial loss (gain)	10,012	7,536	0
Settlement and curtailment impact	2,031	0	0
Employee benefit plan expense	4,014	(616)	(7,791)
Foreign Plan | Qualified Defined Benefits | Qualified Defined Benefits
Net periodic benefit cost [Abstract]
Service cost	5,749	5,345	5,665
Interest cost	3,590	3,697	5,101
Expected return on plan assets	(7,188)	(6,837)	(6,220)
Prior service cost (credit)	(453)	(493)	(398)
Recognized actuarial loss (gain)	3,938	3,047	3,109
Settlement and curtailment impact	194	25	961
Employee benefit plan expense	$ 5,830	$ 4,784	$ 8,218