Accumulated Other Comprehensive Earnings (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Accumulated other comprehensive earnings (loss), net of tax
Balance at the beginning of the period	$ 823,422
Balance at the end of the period	834,420	$ 791,691
Foreign Currency Translation
Accumulated other comprehensive earnings (loss), net of tax
Balance at the beginning of the period	(21,050)	(23,795)
Other comprehensive earnings (loss) before reclassifications	320	1,296
Other comprehensive earnings (loss) net of tax	(320)	(1,296)
Balance at the end of the period	(20,730)	(22,499)
Investments
Accumulated other comprehensive earnings (loss), net of tax
Balance at the beginning of the period	(2,359)	(8,809)
Other comprehensive earnings (loss) before reclassifications	119	1,890
Other comprehensive earnings (loss) net of tax	(119)	(1,890)
Balance at the end of the period	(2,240)	(6,919)
Foreign Currency Derivatives
Accumulated other comprehensive earnings (loss), net of tax
Balance at the beginning of the period	228	(215)
Other comprehensive earnings (loss) before reclassifications	(271)	(29)
Reclassifications from accumulated other comprehensive loss	20	66
Other comprehensive earnings (loss) net of tax	251	(37)
Balance at the end of the period	(23)	(178)
Commodity Derivatives
Accumulated other comprehensive earnings (loss), net of tax
Balance at the beginning of the period	(1,915)	8
Other comprehensive earnings (loss) before reclassifications	1,179	101
Reclassifications from accumulated other comprehensive loss	311	(70)
Other comprehensive earnings (loss) net of tax	(1,490)	(31)
Balance at the end of the period	(425)	39
Postretirement and Pension Benefits
Accumulated other comprehensive earnings (loss), net of tax
Balance at the beginning of the period	1,883	2,642
Reclassifications from accumulated other comprehensive loss	(121)	(144)
Other comprehensive earnings (loss) net of tax	121	144
Balance at the end of the period	1,762	2,498
Accumulated Other Comprehensive Earnings (Loss).
Accumulated other comprehensive earnings (loss), net of tax
Balance at the beginning of the period	(23,213)	(30,169)
Other comprehensive earnings (loss) before reclassifications	1,347	3,258
Reclassifications from accumulated other comprehensive loss	210	(148)
Other comprehensive earnings (loss) net of tax	(1,557)	(3,110)
Balance at the end of the period	$ (21,656)	$ (27,059)