Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 20,608	$ 19,962	$ 19,857	$ 20,550	$ 20,965	$ 18,808	$ 19,857	$ 18,808
Other comprehensive (loss) income, net of tax, before reclassifications							(1,945)	1,421
Amounts reclassified from accumulated other comprehensive income, net of tax, to other, net, on the condensed consolidated statements of comprehensive income							29,626	1,645
Total other comprehensive income (loss), net of tax	94	27,776	(189)	(56)	502	2,620	27,681	3,066
Ending balance	21,049	20,608	19,962	20,504	20,550	20,965	21,049	20,504
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(16,503)	(44,279)	(44,090)	(45,180)	(45,682)	(48,302)	(44,090)	(48,302)
Total other comprehensive income (loss), net of tax	94	27,776	(189)	(56)	502	2,620
Ending balance	(16,409)	$ (16,503)	(44,279)	(45,236)	$ (45,180)	(45,682)	(16,409)	(45,236)
Defined Benefit Pension Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(42,456)			(44,120)	(42,456)	(44,120)
Other comprehensive (loss) income, net of tax, before reclassifications							0	0
Amounts reclassified from accumulated other comprehensive income, net of tax, to other, net, on the condensed consolidated statements of comprehensive income							29,626	1,645
Total other comprehensive income (loss), net of tax							29,626	1,645
Ending balance	(12,830)			(42,475)			(12,830)	(42,475)
Foreign Currency Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ (1,634)			$ (4,182)	(1,634)	(4,182)
Other comprehensive (loss) income, net of tax, before reclassifications							(1,945)	1,421
Amounts reclassified from accumulated other comprehensive income, net of tax, to other, net, on the condensed consolidated statements of comprehensive income							0	0
Total other comprehensive income (loss), net of tax							(1,945)	1,421
Ending balance	$ (3,579)			$ (2,761)			$ (3,579)	$ (2,761)