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Intangible Assets, Goodwill and Other Assets (Schedule of Intangible Assets) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 203,292 | $ 196,834
Accumulated Amortization | 75,972 | 69,771
Carrying Value | $ 127,320 | 127,063
Other |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Amortization Period in Years | 10 years |
Gross Carrying Amount | $ 44,391 | 37,933
Accumulated Amortization | 13,615 | 15,770
Carrying Value | $ 30,776 | 22,163
Marine transportation |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Amortization Period in Years | 20 years |
Marine transportation | Contract intangible |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 800 | 800
Accumulated Amortization | 642 | 607
Carrying Value | $ 158 | 193
Offshore pipeline transportation |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Amortization Period in Years | 19 years |
Offshore pipeline transportation | Contract intangible |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 158,101 | 158,101
Accumulated Amortization | 61,715 | 53,394
Carrying Value | $ 96,386 | $ 104,707

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