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Prepaid and Other Current Assets | 6 Months Ended
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Jun. 30, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |
Prepaid and Other Current Assets | Prepaid and Other Current Assets Prepaid and other current assets at June 30, 2018 and December 31, 2017 consisted of the following (in thousands):
| June 30, 2018 |  | December 31, 2017
Advances to suppliers for crude oil purchases | $ | 70,387 |  |  | $ | — |
Collateral posted with broker for derivative instruments | 2,593 |  |  | 215 |
Prepaid insurance | 2,858 |  |  | 7,547 |
Derivative assets | 3,217 |  |  | 4,296 |
Other | 7,886 |  |  | 5,221 |
Total | $ | 86,941 |  |  | $ | 17,279 |

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- Definition Tabular disclosure of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer; the aggregate carrying amount of current assets, not separately presented elsewhere in the balance sheet; and other deferred costs. + 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 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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