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Schedule II - Consolidated Valuation and Qualifying Accounts Schedule II - Consolidated Valuation and Qualifying Accounts Level 4 (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Reserve for uncollectible accounts      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Valuation Allowances and Reserves, Beginning Balance $ 5,699 $ 5,585 $ 5,546
Valuation Allowances and Reserves, Charged to Income 3,009 4,523 3,527
Valuation Allowances and Reserves, Charged (Credited) to Other Accounts 471 1,302 975
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction [1] 4,754 5,711 4,463
Valuation Allowances and Reserves, Ending Balance 4,425 5,699 5,585
Injuries and damages      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Valuation Allowances and Reserves, Beginning Balance 3,627 3,275 2,802
Valuation Allowances and Reserves, Charged to Income 799 992 974
Valuation Allowances and Reserves, Charged (Credited) to Other Accounts 0 0 0
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction [1] 1,473 640 501
Valuation Allowances and Reserves, Ending Balance $ 2,953 $ 3,627 $ 3,275
[1] Represents deductions from the reserves for purposes for which the reserves were created. In the case of uncollectible accounts, and notes reserves, includes reversals of amounts previously reserved.