v3.25.3
Derivatives (Schedule of Effect on Operating Results) (Details) - Commodity Derivatives - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain (Loss) Recognized in Income (Loss) $ (39) $ 2,776 $ 506 $ (487)
Contracts designated as hedges under accounting guidance | Onshore transportation and services product costs        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain (Loss) Recognized in Income (Loss) (44) 2,539 1,043 (438)
Contracts not considered hedges under accounting guidance | Onshore transportation and services product costs        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain (Loss) Recognized in Income (Loss) $ 5 $ 237 $ (537) $ (49)