Legal Proceedings (Details) gal in Millions, $ in Millions			3 Months Ended
	Apr. 09, 2020 USD ($)	Feb. 20, 2020 USD ($)	Jun. 30, 2016 item gal	Jun. 30, 2020 a
Alleged Violations of Clean Air Act at Albany Terminal [Member]
Other legal proceedings
Terminal area (in acres) | a				63
Litigation Regarding Breach Of Contract Related To Basin Transload And Tesoro [Member]
Other legal proceedings
Damages sought		$ 5.0
Amount paid under the agreement	$ 13.1
Reimbursement percentage	20.00%
Damages from Product Defects [Member]
Other legal proceedings
Number of terminals affected | item			1
Quantity of product affected (in gallons) | gal			14