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Supplemental Natural Gas Disclosures - Changes in Standardized Measure of Discounted Future Net Cash Flow (Detail) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 USD ($)
Oil And Gas Exploration And Production Industries Disclosures [Abstract] |
Net change in sales prices and production costs | $ (49,562)
Net change in future development costs | 15,563
Sales of natural gas, net of production costs | (10,088)
Net change due to revisions of quantity estimates | (9,705)
Accretion of discount | (6,346)
Net change in income taxes | 14,207
Other | 3,818
Aggregate change for the year | $ (42,113)

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- Definition Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of revisions of estimated quantity of oil and gas in proved reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=51678428&loc=d3e62500-109447 + Details
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