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Pension and Employee Benefit Plans - Components of Pension and Employee Benefit Expenses (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost	$ 0	$ 53	$ (8)	$ 166
Health Care Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	0	304	318	912
Expected return on plan assets	0	(308)	(335)	(915)
Amortization of net actuarial loss	$ 0	$ 57	$ 9	$ 169

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Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.

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