Accumulated Other Comprehensive Loss - Defined Benefit Pension (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 1,547,691	$ 1,393,967	$ 1,430,312	$ 1,322,394
Balance at end of period	1,631,632	1,414,995	1,631,632	1,414,995
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(13,068)	0	0	0
Other comprehensive income (loss) before reclassifications	3,823	0	(9,840)	0
Amounts reclassified from AOCL	48	0	643	0
Balance at end of period	$ (9,197)	$ 0	$ (9,197)	$ 0