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Goodwill (Tables) | 9 Months Ended
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Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | During the nine months ended September 30, 2016, the change in the carrying amount of goodwill was as follows (in thousands):
Balance at beginning of period | $ | 41,327 |
Acquisition of Wyoming Refining Company (1) | 63,266 |
Mid Pac acquisition purchase price allocation adjustments (1) | (589 | )
Balance at end of period | $ | 104,004 |
_________________________________________________________ (1)Please read Note 4—Acquisitions for further information.

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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