Annual report [Section 13 and 15(d), not S-K Item 405]

Pension and Other Postretirement Benefits - Projected Benefit Obligation and Accumulated Benefit Obligation in Excess of Plan Assets (Details)

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Pension and Other Postretirement Benefits - Projected Benefit Obligation and Accumulated Benefit Obligation in Excess of Plan Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Projected benefit obligation in excess of Pension Plan assets:      
Projected benefit obligation $ 3,930 $ 3,567  
Fair value of Pension Plan assets 14,565 12,611 $ 14,201
Plan assets in excess of accumulated benefit obligation:      
Accumulated benefit obligation 3,930 3,567  
Fair value of Pension Plan assets $ 14,565 $ 12,611