Acquisition (Details) $ in Thousands		3 Months Ended
	Jul. 14, 2023 USD ($) Barge Barrels	Mar. 31, 2024 USD ($)	Sep. 30, 2023 USD ($) Barge	Mar. 31, 2023 USD ($)
Restructuring Cost and Reserve [Line Items]
Cash paid for acquisition		$ 81,047		$ 73,199
Inland Tank Barges [Member]
Restructuring Cost and Reserve [Line Items]
Cash paid for acquisition	$ 37,000
Number of tank barges | Barge	23		4
Total capacity of barrels | Barrels	265,000
Cash paid for acquisition			$ 500
Average age	14 years