Acquisition (Details) $ in Thousands			3 Months Ended	9 Months Ended
	May 15, 2024 USD ($) Barrels Barge Towboat	Jul. 14, 2023 USD ($) Barge Barrels	Sep. 30, 2023 USD ($) Barge	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($) Barge
Restructuring Cost and Reserve [Line Items]
Cash paid for acquisition				$ 245,990	$ 274,963
Equipment Purchase Agreement [Member]
Restructuring Cost and Reserve [Line Items]
Cash paid for acquisition	$ 65,200
Inland Tank Barges [Member]
Restructuring Cost and Reserve [Line Items]
Cash paid for acquisition		$ 37,000
Number of tank barges | Barge		23	4		4
Total capacity of barrels | Barrels		265,000
Cash paid for acquisition			$ 500
Average age		14 years
Inland Tank Barges [Member] | Equipment Purchase Agreement [Member]
Restructuring Cost and Reserve [Line Items]
Number of tank barges | Barge	13
Total capacity of barrels | Barrels	347,000
Average age	15 years
High Horsepower Towboats [Member] | Equipment Purchase Agreement [Member]
Restructuring Cost and Reserve [Line Items]
Number of horsepower towboats | Towboat	2
Specialty Barges [Member] | Equipment Purchase Agreement [Member]
Restructuring Cost and Reserve [Line Items]
Number of tank barges | Barge	3