Legal Proceedings (Details)			3 Months Ended
	Feb. 03, 2016 USD ($)	Oct. 05, 2015 item	Mar. 31, 2017 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
Damages from Product Defects [Member]
Other legal proceedings
Quantity of product affected (in gallons) | gal			14