Accumulated Other Comprehensive Income (Loss) - Summary of Accumulated Other Comprehensive (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 1,435,598	$ 1,115,388	$ 711,786
Ending Balance	1,417,611	1,435,598	1,115,388
Reclassification of stranded tax effects
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(4,809)	(19,720)	(19,720)
Gains (Losses) During the Period, Pre-tax Activity	0	0	0
Gains (Losses) During the Period, Tax Effect	0	0	0
Reclassification to Income, Pre-tax Activity	0	0	0
Reclassification to Income, Tax Effect	0	14,911	0
Ending Balance	(4,809)	(4,809)	(19,720)
Total AOCI
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(4,276)	(84,837)	(100,463)
Gains (Losses) During the Period, Pre-tax Activity	8,097	(4,955)	16,247
Gains (Losses) During the Period, Tax Effect	(1,982)	1,212	(3,976)
Reclassification to Income, Pre-tax Activity	60	114,758	4,445
Reclassification to Income, Tax Effect	(14)	(30,454)	(1,090)
Ending Balance	1,885	(4,276)	(84,837)
Unrealized gain on short-term investments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	0
Gains (Losses) During the Period, Pre-tax Activity	33
Gains (Losses) During the Period, Tax Effect	(8)
Reclassification to Income, Pre-tax Activity	0
Reclassification to Income, Tax Effect	0
Ending Balance	25	0
Foreign currency translation adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance		0	(9)
Gains (Losses) During the Period, Pre-tax Activity			0
Gains (Losses) During the Period, Tax Effect			0
Reclassification to Income, Pre-tax Activity			11
Reclassification to Income, Tax Effect			(2)
Ending Balance			0
Pension Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Actuarial losses included in accumulated other comprehensive loss	(5,362)	(218)
Pension Plans \| Primary Plan
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Actuarial losses included in accumulated other comprehensive loss	0	0
Pension Plans \| Actuarial gain
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(67,378)	(71,140)	(78,882)
Gains (Losses) During the Period, Pre-tax Activity		3,036	6,263
Gains (Losses) During the Period, Tax Effect		(744)	(1,533)
Reclassification to Income, Pre-tax Activity		1,946	3,990
Reclassification to Income, Tax Effect		(476)	(978)
Ending Balance		(67,378)	(71,140)
Pension Plans \| Actuarial gain \| Bargaining Plan
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	533
Gains (Losses) During the Period, Pre-tax Activity	5,144
Gains (Losses) During the Period, Tax Effect	(1,259)
Reclassification to Income, Pre-tax Activity	0
Reclassification to Income, Tax Effect	0
Ending Balance	4,418	533
Pension Plans \| Prior service costs
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(97)	(105)	11
Gains (Losses) During the Period, Pre-tax Activity		(5)	(154)
Gains (Losses) During the Period, Tax Effect		1	38
Reclassification to Income, Pre-tax Activity		16	0
Reclassification to Income, Tax Effect		(4)	0
Ending Balance		(97)	(105)
Pension Plans \| Prior service costs \| Bargaining Plan
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(97)
Gains (Losses) During the Period, Pre-tax Activity	0
Gains (Losses) During the Period, Tax Effect	0
Reclassification to Income, Pre-tax Activity	16
Reclassification to Income, Tax Effect	(4)
Ending Balance	(85)	(97)
Pension Plans \| Pension plan settlement
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	67,911	0
Gains (Losses) During the Period, Pre-tax Activity		0
Gains (Losses) During the Period, Tax Effect		0
Reclassification to Income, Pre-tax Activity		112,796
Reclassification to Income, Tax Effect		(44,885)
Ending Balance		67,911	0
Postretirement Benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Actuarial losses included in accumulated other comprehensive loss	4,252	7,216
Postretirement Benefits \| Actuarial gain
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	721	6,752	(1,239)
Gains (Losses) During the Period, Pre-tax Activity	2,920	(7,986)	10,138
Gains (Losses) During the Period, Tax Effect	(715)	1,955	(2,481)
Reclassification to Income, Pre-tax Activity	44	0	444
Reclassification to Income, Tax Effect	(10)	0	(110)
Ending Balance	2,960	721	6,752
Postretirement Benefits \| Prior service costs
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(624)	(624)	(624)
Gains (Losses) During the Period, Pre-tax Activity	0	0	0
Gains (Losses) During the Period, Tax Effect	0	0	0
Reclassification to Income, Pre-tax Activity	0	0	0
Reclassification to Income, Tax Effect	0	0	0
Ending Balance	$ (624)	$ (624)	$ (624)

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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Amount before tax of other comprehensive income (loss) attributable to parent entity.

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