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Segment Data (Tables) | 9 Months Ended
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Sep. 30, 2018
Segment Reporting [Abstract] |
Summary Segment Data | The following is a summary of business segment operating performance as measured by contribution margin for the periods indicated (in thousands):
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
Pipelines and Transportation |  |  |  |  |  |  |  |
Net revenues: |  |  |  |  |  |  |  |
Affiliates |  | $ | 36,132 |  |  | $ | 27,805 |  |  | $ | 99,624 |  |  | $ | 81,972 |
Third party |  | 3,653 |  |  | 3,177 |  |  | 11,618 |  |  | 7,910 |
Total pipelines and transportation |  | 39,785 |  |  | 30,982 |  |  | 111,242 |  |  | 89,882 |
Cost of materials and other |  | 5,055 |  |  | 4,883 |  |  | 14,691 |  |  | 13,691 |
Operating expenses (excluding depreciation and amortization) |  | 9,499 |  |  | 8,573 |  |  | 29,054 |  |  | 24,661 |
Segment contribution margin |  | $ | 25,231 |  |  | $ | 17,526 |  |  | $ | 66,839 |  |  | $ | 51,530 |
Capital spending (1) |  | $ | 2,086 |  |  | $ | 2,918 |  |  | $ | 4,320 |  |  | $ | 6,715 |
Wholesale Marketing and Terminalling |  |  |  |  |  |  |  |
Net revenues: |  |  |  |  |  |  |  |
Affiliates (2) |  | $ | 27,703 |  |  | $ | 12,326 |  |  | $ | 78,935 |  |  | $ | 34,602 |
Third party |  | 96,622 |  |  | 87,318 |  |  | 308,134 |  |  | 262,384 |
Total wholesale marketing and terminalling |  | 124,325 |  |  | 99,644 |  |  | 387,069 |  |  | 296,986 |
Cost of materials and other |  | 100,541 |  |  | 84,237 |  |  | 315,953 |  |  | 253,058 |
Operating expenses (excluding depreciation and amortization) |  | 5,896 |  |  | 2,089 |  |  | 13,835 |  |  | 6,325 |
Segment contribution margin |  | $ | 17,888 |  |  | $ | 13,318 |  |  | $ | 57,281 |  |  | $ | 37,603 |
Capital spending (1) |  | $ | 905 |  |  | $ | 868 |  |  | $ | 3,120 |  |  | $ | 1,981 |
Consolidated |  |  |  |  |  |  |  |
Net revenues: |  |  |  |  |  |  |  |
Affiliates |  | $ | 63,835 |  |  | $ | 40,131 |  |  | $ | 178,559 |  |  | $ | 116,574 |
Third party |  | 100,275 |  |  | 90,495 |  |  | 319,752 |  |  | 270,294 |
Total consolidated |  | 164,110 |  |  | 130,626 |  |  | 498,311 |  |  | 386,868 |
Cost of materials and other |  | 105,596 |  |  | 89,120 |  |  | 330,644 |  |  | 266,749 |
Operating expenses (excluding depreciation and amortization presented below) |  | 15,395 |  |  | 10,662 |  |  | 42,889 |  |  | 30,986 |
Contribution margin |  | 43,119 |  |  | 30,844 |  |  | 124,778 |  |  | 89,133 |
General and administrative expenses |  | 3,076 |  |  | 2,751 |  |  | 9,798 |  |  | 8,255 |
Depreciation and amortization |  | 6,702 |  |  | 5,462 |  |  | 19,721 |  |  | 16,397 |
Loss (gain) on asset disposals |  | 717 |  |  | (5 | ) |  | 648 |  |  | 2 |
Operating income |  | $ | 32,624 |  |  | $ | 22,636 |  |  | $ | 94,611 |  |  | $ | 64,479 |
Capital spending (1) |  | $ | 2,991 |  |  | $ | 3,786 |  |  | $ | 7,440 |  |  | $ | 8,696 |
(1) Capital spending excludes transaction costs capitalized in the amount of $0.4 million that relate to the Big Spring Logistic Assets Acquisition for the nine months ended September 30, 2018. No costs were capitalized during the three months ended September 30, 2018. (2) Affiliate revenue for the wholesale marketing and terminalling segment is presented net of amortization expense pertaining to the Marketing Contract Intangible Acquisition. See Note 3 for additional information. The following table summarizes the total assets for each segment as of September 30, 2018 and December 31, 2017 (in thousands):
|  | September 30, 2018 |  | December 31, 2017
Pipelines and transportation |  | $ | 431,173 |  |  | $ | 349,351 |
Wholesale marketing and terminalling |  | 262,396 |  |  | 94,179 |
Total assets |  | $ | 693,569 |  |  | $ | 443,530 |
Property, plant and equipment and accumulated depreciation as of September 30, 2018 and depreciation expense by reporting segment for the three and nine months ended September 30, 2018 were as follows (in thousands):
|  | Pipelines and Transportation |  | Wholesale Marketing and Terminalling |  | Consolidated
Property, plant and equipment |  | $ | 356,646 |  |  | $ | 92,076 |  |  | $ | 448,722 |
Less: accumulated depreciation |  | (101,801 | ) |  | (32,251 | ) |  | (134,052 | )
Property, plant and equipment, net |  | $ | 254,845 |  |  | $ | 59,825 |  |  | $ | 314,670 |
Depreciation expense for the three months ended September 30, 2018 |  | $ | 5,284 |  |  | $ | 1,418 |  |  | $ | 6,702 |
Depreciation expense for the nine months ended September 30, 2018 |  | $ | 15,808 |  |  | $ | 3,824 |  |  | $ | 19,632 |

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8813-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8721-108599 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8906-108599 + Details
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