Consolidated Statements of Operations - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Operating revenues		$ 559,736	$ 670,810	$ 1,637,050	$ 1,898,675
Costs of sales		518,591	627,012	1,517,458	1,770,954
Gross profit		41,145	43,798	119,592	127,721
Income from CST Fuel Supply equity interests		3,927	3,479	11,087	11,024
Operating expenses:
Operating expenses		12,978	15,261	42,541	47,294
General and administrative expenses		3,937	4,310	12,464	13,840
Depreciation, amortization and accretion expense		14,063	13,993	39,620	51,425
Total operating expenses		30,978	33,564	94,625	112,559
Loss on dispositions and lease terminations, net		(1,745)	(61)	(2,173)	(6,678)
Operating income	[1]	12,349	13,652	33,881	19,508
Other income, net		168	104	352	287
Interest expense		(6,532)	(8,145)	(21,105)	(24,354)
Income (loss) before income taxes		5,985	5,611	13,128	(4,559)
Income tax (benefit) expense		(1,180)	303	(690)	(2,122)
Net income (loss)		7,165	5,308	13,818	(2,437)
Less: net loss attributable to noncontrolling interests					(5)
Net income (loss) attributable to limited partners		7,165	5,308	13,818	(2,432)
IDR distributions		(133)	(133)	(399)	(1,446)
Net income (loss) available to limited partners		$ 7,032	$ 5,175	$ 13,419	$ (3,878)
Basic and diluted income (loss) per limited partner unit		$ 0.20	$ 0.15	$ 0.39	$ (0.11)
Weighted-average limited partner units:
Basic common units		34,453,162	34,439,416	34,447,185	34,311,998
Diluted common units		34,464,027	34,439,416	34,447,723	34,311,998
Supplemental information:
(a) Includes excise taxes of:		$ 21,292	$ 25,176	$ 61,642	$ 74,984
(a) Includes revenues from fuel sales to and rental income from related parties of:		$ 80,667	$ 122,383	$ 242,655	$ 350,454

[1] As discussed in Note 1, as a result of the adoption of ASC 842, operating income for the three and nine months ended September 30, 2019 is not comparable to operating income for the three and nine months ended September 30, 2018. Most significantly, payments on our previous failed sale-leaseback obligations were characterized as principal and interest expense in periods prior to 2019. Starting in 2019, these payments are characterized as rent expense and thus reduce operating income. These payments for the Wholesale and Retail segments amounted to approximately $1.7 million and $0.1 million for the three months ended September 30, 2018 and $5.0 million and $0.4 million for the nine months ended September 30, 2018, respectively.