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Employee Benefit Plans - Changes in Accumulated Postretirement Benefits Obligations (Details) - Postretirement Medical and Life Benefit Plan - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Obligation at the Beginning of Year $ 1,534 $ 1,747  
Unrecognized Loss (Gain) 753 (240)  
Components of Net Periodic Postretirement Benefit Cost      
Service Cost 106 118 $ 101
Interest Cost 79 77 71
Net Expected Benefit Payments (113) (168)  
Amendments 0 0  
Obligation at End of Year $ 2,359 $ 1,534 $ 1,747