Revenue Recognition (Disaggregated Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Total revenues	$ 756,261	$ 804,662	$ 1,526,366	$ 1,595,274
Fee-based Revenues [Member]
Disaggregation of Revenue [Line Items]
Total revenues	199,325	182,699	400,182	371,504
Product Sales [Member]
Disaggregation of Revenue [Line Items]
Total revenues	536,510	599,409	1,082,871	1,179,392
Refinery Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues	20,426	22,554	43,313	44,378
Offshore Pipeline Transportation [Member]
Disaggregation of Revenue [Line Items]
Total revenues	99,024	91,459	201,014	182,854
Offshore Pipeline Transportation [Member] | Fee-based Revenues [Member]
Disaggregation of Revenue [Line Items]
Total revenues	99,024	91,459	201,014	182,854
Offshore Pipeline Transportation [Member] | Product Sales [Member]
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Offshore Pipeline Transportation [Member] | Refinery Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Soda and sulfur services
Disaggregation of Revenue [Line Items]
Total revenues	389,994	462,855	790,942	907,503
Soda and sulfur services | Fee-based Revenues [Member]
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Soda and sulfur services | Product Sales [Member]
Disaggregation of Revenue [Line Items]
Total revenues	369,568	440,301	747,629	863,125
Soda and sulfur services | Refinery Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues	20,426	22,554	43,313	44,378
Marine Transportation [Member]
Disaggregation of Revenue [Line Items]
Total revenues	81,871	77,343	165,445	160,569
Marine Transportation [Member] | Fee-based Revenues [Member]
Disaggregation of Revenue [Line Items]
Total revenues	81,871	77,343	165,445	160,569
Marine Transportation [Member] | Product Sales [Member]
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Marine Transportation [Member] | Refinery Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Onshore facilities and transportation
Disaggregation of Revenue [Line Items]
Total revenues	185,372	173,005	368,965	344,348
Onshore facilities and transportation | Fee-based Revenues [Member]
Disaggregation of Revenue [Line Items]
Total revenues	18,430	13,897	33,723	28,081
Onshore facilities and transportation | Product Sales [Member]
Disaggregation of Revenue [Line Items]
Total revenues	166,942	159,108	335,242	316,267
Onshore facilities and transportation | Refinery Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues	$ 0	$ 0	$ 0	$ 0