Components of Net Periodic Benefit Cost - Employer Contributions (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Defined Benefit Plan Disclosure
Amount of potential discretionary contributions accrued to a defined contribution plan	$ 2,400	$ 2,400
Pension plan
Defined Benefit Plan Disclosure
Expected future benefit payment			$ 570
Contributions by employer	905
Pension plan | Employee Stock Option
Defined Benefit Plan Disclosure
Expected future benefit payment			563
Contributions by employer	0
Postretirement Health Coverage
Defined Benefit Plan Disclosure
Expected future benefit payment			$ 243
Contributions by employer	$ 188