v3.26.1
Intangible Assets (Schedule of Components of Intangible Assets) (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 180,249 $ 181,261
Accumulated Amortization 109,274 105,655
Carrying Value 70,975 75,606
Offshore pipeline contract intangibles | Offshore pipeline transportation    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 158,101 158,101
Accumulated Amortization 90,839 86,678
Carrying Value 67,262 71,423
Other    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 22,148 23,160
Accumulated Amortization 18,435 18,977
Carrying Value $ 3,713 $ 4,183