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Derivative Instruments - Outstanding Trading Contracts (Details) - Forward Contracts [Member] gal in Thousands | Mar. 31, 2016 $ / gal gal
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Sales [Member] |
Derivative [Line Items] |
Quantity In Gallons | gal | 630
Weighted Average Contract Prices | 0.4425
Sales [Member] | Minimum [Member] |
Derivative [Line Items] |
Estimated Market Prices | 0.4425
Sales [Member] | Maximum [Member] |
Derivative [Line Items] |
Estimated Market Prices | 0.4425
Purchase [Member] |
Derivative [Line Items] |
Quantity In Gallons | gal | 631
Weighted Average Contract Prices | 0.4422
Purchase [Member] | Minimum [Member] |
Derivative [Line Items] |
Estimated Market Prices | 0.4413
Purchase [Member] | Maximum [Member] |
Derivative [Line Items] |
Estimated Market Prices | 0.4413

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- Definition Quantity in gallons. + References No definition available. + Details
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Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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- Details
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