Partners' Equity, Issuances (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Sep. 30, 2016	Sep. 30, 2015	[1]
Capital Unit [Line Items]
Partners' Capital Account, Units, Sold in Private Placement		3,420,000
Sale of Stock, Price Per Share		$ 30.18	$ 30.18
Common Unit, Issued		703,455	703,455
General Partners' Contributed Capital		$ 500	$ 500
Common units held by HFC		22,380,030	22,380,030
General partner ownership interest			2.00%
Ownership percentage, controlling interest		39.00%	39.00%
Proceeds from Partnership Contribution			$ 99	$ 824
Common Unit Issuance Program			$ 200,000
Gross Proceeds from Issuance of Common Units		$ 23,500
Fees and Commissions		$ 500
Subsequent Event [Member]
Capital Unit [Line Items]
Ownership percentage, controlling interest	37.00%
Proceeds from Issuance of Private Placement	$ 103,000
Proceeds from Partnership Contribution	$ 2,100

[1] Retrospectively adjusted as described in Note 1.