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Derivative Instruments (Details) $ in Thousands | Dec. 31, 2016 USD ($) bbl | Dec. 31, 2015 USD ($) bbl
--- | --- | ---
Footnote [Abstract] |  |  |
Cash deficit |  | $ 600 |
Cash collateral |  |  | $ 800
Derivatives not designated as hedging instrument [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Assets |  | 9 | 171
Liabilities |  | (82) | (45)
Less: Counterparty netting and cash collateral, Assets | [1] | 9 | (706)
Less: Counterparty netting and cash collateral, Liabilities | [1] | 621 | (45)
Total net fair value of derivative, Assets |  | 0 | 877
Total net fair value of derivative, Liabilities |  | $ (703) | $ 0
Footnote [Abstract] |  |  |
Open derivative contracts (barrels) | bbl |  | 93,000 | 171,000
Other current assets | Derivatives not designated as hedging instrument [Member] | OTC commodity swaps |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Assets | [2] | $ 9 | $ 171
Liabilities | [2] | $ (82) | $ (45)
[1] | As of December 31, 2016, we had a cash deficit of $0.6 million netted with the net derivative positions of one of our counterparties. As of December 31, 2015, $0.8 million cash collateral was held by counterparty brokerage firms.
[2] | As of December 31, 2016 and 2015, we had open derivative contracts representing 93,000 barrels and 171,000 barrels, respectively, of refined petroleum products.

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