Legal Proceedings (Details) gal in Millions				9 Months Ended
	Jun. 10, 2016 USD ($)	Feb. 03, 2016 USD ($)	Oct. 05, 2015 item	Sep. 30, 2016 a gal
Alleged Violations of Clean Air Act at Albany Terminal [Member]
Other legal proceedings
Terminal area (in acres) | a				63
Number of plaintiffs added | item			2
Damages sought		$ 37,500
Contract Dispute with Counterparty [Member] | Transfer of Renewable Fuel Identification Numbers [Member]
Other legal proceedings
Damages awarded	$ 1,500,000
Contract Dispute with Counterparty [Member] | Transfer of Renewable Fuel Identification Numbers [Member] | Minimum
Other legal proceedings
Damages sought	$ 12,000,000
Damages from Product Defects [Member]
Other legal proceedings
Quantity of product affected (in gallons) | gal				14