Acquisitions (Details) (USD $)	0 Months Ended	3 Months Ended			6 Months Ended
	Jul. 12, 2012 Consecutive_Quarters	Jun. 30, 2013	Sep. 30, 2012	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage		25.00%			25.00%
Class B unit		$ 16,960,000			$ 16,960,000		$ 13,903,000
UNEV Pipeline [Member]
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage		75.00%			75.00%
Cash distribution to HFC for UNEV Acquisition	260,000,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	2,059,800
Business Acquisition, Payment of Contingent Consideration	900,000
Business Acquisition, Post Acquisition Incentive Distributions			1,250,000		30,000,000
Number of Consecutive Quarters, Forego Rights to Incentive Distributions	12
Number Of Consecutive Quarters, Forego Rights To Incentive Distributions, Extension	4
Class B unit		17,000,000			17,000,000		13,900,000
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability		(1,100,000)			(4,000,000)
Compound Percentage Increase to Class B Equity Units					7.00%
Net Income (Loss) for Period Prior to Acquisition				2,200,000		4,100,000
Revenues for period prior to acquisition				$ 3,900,000		$ 7,800,000