Derivative Financial Instruments - Cash Receipts (Payments) on Derivative Settlements, Net Included within Net Cash Provided by Operating Activities (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Derivative Instruments And Hedging Activities Disclosure [Abstract] | |||
| Cash receipts on derivative settlements, net | $ 4,199 | $ 4,746 | $ 6,703 |
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- References No definition available.
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- Definition Cash proceeds payments on derivative settlements net operating activities. No definition available.
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