Partners' Capital (Distributions Expected To Be Paid To Related Parties) (Details) (Subsequent Event [Member], USD $) In Thousands, unless otherwise specified	0 Months Ended
	May 28, 2015
Ferrell Companies [Member]
Distribution Expected To Be Made to Member or Limited Partner [Line Items]
Cash distributions to related parties	$ 11,265
FCI Trading Corp. [Member]
Distribution Expected To Be Made to Member or Limited Partner [Line Items]
Cash distributions to related parties	98
Ferrell Propane, Inc. [Member]
Distribution Expected To Be Made to Member or Limited Partner [Line Items]
Cash distributions to related parties	26
James E. Ferrell [Member]
Distribution Expected To Be Made to Member or Limited Partner [Line Items]
Cash distributions to related parties	2,179
General Partner [Member]
Distribution Expected To Be Made to Member or Limited Partner [Line Items]
Cash distributions to related parties	$ 418