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Schedule of Trade Accounts Receivable (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Operating revenues:    
Short-term trade accounts receivable $ 269,227 $ 243,768
Less: Allowance for credit losses (4,847) (4,320)
Total short-term trade accounts receivable 264,380 239,448
Long term trade accounts 1,771 1,730
Total trade accounts receivable $ 266,151 $ 241,178