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Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Thousands | 9 Months Ended
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Sep. 30, 2016 | Sep. 30, 2015
Accounting Policies [Abstract] |  |
Minimum amortization period (in years) | 3 years |
Maximum amortization period (in years) | 5 years |
Deferred turnaround expenditures | $ 34,969 | $ 0

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- Definition Amortization Period of Planned Major Maintenance Activities, Maximum + References No definition available. + Details
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- Definition Payments for Deferred Turnaround Expenditures + References No definition available. + Details
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