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Prepaid and Other Current Assets (Tables) | 6 Months Ended
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Jun. 30, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |
Prepaid and Other Current Assets | Prepaid and other current assets at June 30, 2017 and December 31, 2016 consisted of the following (in thousands):
| June 30, 2017 |  | December 31, 2016
Advances to suppliers for crude oil purchases | $ | — |  |  | $ | 38,300 |
Collateral posted with broker for derivative instruments | 4,005 |  |  | 2,714 |
Prepaid insurance | 2,608 |  |  | 7,504 |
Derivative assets | 630 |  |  | 161 |
Other | 6,326 |  |  | 4,701 |
Total | $ | 13,569 |  |  | $ | 53,380 |

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- Definition Tabular disclosure of the carrying amounts of other current assets. + References No definition available. + Details
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