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