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Acquisitions (Tables) | 3 Months Ended | 12 Months Ended
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Dec. 31, 2012 Nettleton Pipeline [Member] | Dec. 31, 2012 Big Sandy Terminal [Member]
Business Acquisition [Line Items] |  |
Schedule of Purchase Price Allocation [Table Text Block] | The allocation of the aggregate purchase price of the Nettleton Pipeline as of December 31, 2012 is summarized as follows (in thousands):
Property, plant and equipment | $ | 8,590 |
Intangible assets | 2,240 |
Goodwill (all expected to be deductible for tax purposes) | 1,415 |
Total | $ | 12,245 |
| The preliminary allocation of the aggregate purchase price of Big Sandy as of December 31, 2012 is summarized as follows (in thousands):
Property, plant and equipment | $ | 8,258 |
Intangible assets | 1,229 |
Goodwill (all expected to be deductible for tax purposes) | 1,540 |
Total | $ | 11,027 |

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- Definition Tabular disclosure of all of the fair values of the purchase price and assets and liabilities acquired in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + Details
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