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Property, Plant and Equipment (Tables) | 12 Months Ended
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Dec. 31, 2016
Property, Plant and Equipment [Line Items] |
Property, Plant and Equipment [Table Text Block] | Depreciation is computed using the straight-line method over management’s estimated useful lives of the related assets, except for automotive equipment, which is depreciated using a declining-balance method. The estimated useful lives are as follows:
| Years
Buildings and building improvements | 15-40
Pipelines, tanks and terminals | 15-40
Asset retirement obligation assets | 15-50
Other equipment | 3-15
Property, plant and equipment, at cost, consist of the following (in thousands):
|  | December 31,
|  | 2016 |  | 2015
Land and land improvements |  | $ | 4,435 |  |  | $ | 4,253 |
Building and building improvements |  | 2,236 |  |  | 1,886 |
Pipelines, tanks and terminals |  | 305,302 |  |  | 299,101 |
Asset retirement obligation assets |  | 2,073 |  |  | 2,073 |
Other equipment |  | 12,925 |  |  | 4,270 |
Construction in process |  | 15,436 |  |  | 14,064 |
|  | 342,407 |  |  | 325,647 |
Less: accumulated depreciation |  | (91,378 | ) |  | (71,799 | )
|  | $ | 251,029 |  |  | $ | 253,848 |
Property, plant and equipment, accumulated depreciation and depreciation expense by reporting segment as of and for the years ended December 31, 2016 and 2015 are as follows (in thousands):
|  | As of and For the Year Ended December 31, 2016
|  | Pipelines and Transportation |  | Wholesale Marketing and Terminalling |  | Consolidated
Property, plant and equipment |  | $ | 279,155 |  |  | $ | 63,252 |  |  | $ | 342,407 |
Less: accumulated depreciation |  | (67,032 | ) |  | (24,346 | ) |  | (91,378 | )
Property, plant and equipment, net |  | $ | 212,123 |  |  | $ | 38,906 |  |  | $ | 251,029 |
Depreciation expense |  | $ | 16,133 |  |  | $ | 3,617 |  |  | $ | 19,750 |
|  | As of and For the Year Ended December 31, 2015
|  | Pipelines and Transportation |  | Wholesale Marketing and Terminalling |  | Consolidated
Property, plant and equipment |  | $ | 266,169 |  |  | $ | 59,478 |  |  | $ | 325,647 |
Less: Accumulated depreciation |  | (50,542 | ) |  | (21,257 | ) |  | (71,799 | )
Property, plant and equipment, net |  | $ | 215,627 |  |  | $ | 38,221 |  |  | $ | 253,848 |
Depreciation expense |  | $ | 15,011 |  |  | $ | 3,618 |  |  | $ | 18,629 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph b -Article 5 + Details
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