Related Party Transactions - Additional Information (Detail) $ / shares in Units, $ in Thousands					1 Months Ended			3 Months Ended		9 Months Ended		12 Months Ended
	Feb. 19, 2015 USD ($) $ / shares shares	May 31, 2013	May 31, 2011	Feb. 28, 2010	Mar. 31, 2016	Dec. 31, 2015	Jul. 31, 2015 USD ($) $ / shares shares	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) Terminal shares	Sep. 30, 2016 USD ($)	Dec. 31, 2007 USD ($)	Dec. 31, 2016 USD ($)
Related Party Transaction [Line Items]
Selling, general and administrative expenses-affiliate								$ 1,368	$ 1,342	$ 3,941	$ 3,965
Due to general partner								$ 2,762		2,762			$ 2,082
JBBR Acquisition [Member]
Related Party Transaction [Line Items]
Cash paid for Partnership acquired										$ 216,000
Business combination, equity interest in acquire percentage								60.00%		60.00%
Center Oil [Member]
Related Party Transaction [Line Items]
Cash paid for Partnership acquired												$ 35,000
Number of terminals acquired | Terminal										7
Center Oil [Member] | Limited Partners [Member]
Related Party Transaction [Line Items]
Partnership units issued on acquisition | shares										750,000
Written notification for termination of agreement										In December 2015, the Partnership extended the term of the storage and throughput agreement with Center Oil from to June 2020. The agreement will automatically renew for a period of three years at the expiration of the current term at an inflation adjusted rate (subject to a cap), as determined in accordance with the agreement, unless a party delivers a written notice of its election to terminate the storage and throughput agreement at least eighteen months prior to the expiration of the current term.
Agreement extension, month and year						2020-06
Agreement renewal term		1 year								3 years
Valuation percentage of assets at the time of acquisition				50.00%
Agreements extended month and year				2018-05
Agreement renewal, month and year			2018-05
United Energy Trading, LLC [Member]
Related Party Transaction [Line Items]
Initial term of agreement										5 years
Agreement expiration, month and year										2020-05
United Energy Trading, LLC [Member] | Natural Gas Supply Agreement [Member]
Related Party Transaction [Line Items]
Agreement expiration date					Mar. 31, 2018
Joliet Holding [Member]
Related Party Transaction [Line Items]
Fees and reimbursements								$ 500	$ 300	$ 1,100	$ 1,000
Investor [Member]
Related Party Transaction [Line Items]
Sale of common units in private placement, shares | shares	4,520,795
Proceeds from private placement	$ 72,700
Investor [Member] | MTP Energy Master Fund Ltd [Member]
Related Party Transaction [Line Items]
Sale of common units in private placement, shares | shares	572,635
Issuance of common units, net of offering costs	$ 9,500
Investor [Member] | Private Placement [Member]
Related Party Transaction [Line Items]
Price per unit of common units | $ / shares	$ 16.59
Private placement transaction due date	May 14, 2015
Arc Terminals Holdings [Member] | Pawnee Terminal Acquisition [Member]
Related Party Transaction [Line Items]
Cash paid for Partnership acquired							$ 44,300
Business acquisition, Equity interest issued or issuable, Number of shares | shares							1,745,669
Business combination consideration transferred net of adjustment.							$ 76,600
Business acquisition, Equity interest issued, Value							$ 32,300
Business acquisition, Share price | $ / shares							$ 18.50
Lightfoot Capital Partners LP And Lightfoot Capital Partners GPLLC [Member]
Related Party Transaction [Line Items]
Registration rights agreement										In connection with the IPO, the Partnership entered into a registration rights agreement with the Sponsor. Pursuant to the registration rights agreement, the Partnership is required to file, upon request of the Sponsor, a registration statement to register the common units issued to the Sponsor and the common units issuable upon the conversion of the subordinated units held by the Sponsor. In addition, the registration rights agreement gives the Sponsor piggyback registration rights under certain circumstances.
Limited partners capital units percentage										27.00%
Percentage of interest in general partner										100.00%
GE Energy Financial Services [Member] | JBBR Acquisition [Member]
Related Party Transaction [Line Items]
Business combination, equity interest in acquire percentage								40.00%		40.00%
GE Energy Financial Services [Member] | Joliet Holding [Member]
Related Party Transaction [Line Items]
Business combination, equity interest in acquire percentage								40.00%		40.00%