Pension and Other Postretirement Benefits - Change in Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Change in plan assets:
Fair value of plan assets, beginning of year	$ 281,332
Fair value of plan assets, end of year	301,378	$ 281,332
Pension Plans
Change in plan assets:
Fair value of plan assets, beginning of year	281,332	394,026
Actual return on plan assets	21,141	(84,595)
Employer contributions	8,432	12,080
Plan participant contributions	435	350
Acquisitions and divestitures	0	6,772
Settlements	(2,987)	(6,567)
Foreign currency exchange rate changes	11,665	(27,712)
Benefits paid	(18,640)	(13,022)
Fair value of plan assets, end of year	301,378	281,332
Other Plans
Change in plan assets:
Fair value of plan assets, beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	1,326	1,388
Plan participant contributions	3	5
Acquisitions and divestitures	0	0
Settlements	0	0
Foreign currency exchange rate changes	0	0
Benefits paid	(1,329)	(1,393)
Fair value of plan assets, end of year	$ 0	$ 0