Supplementary information (Details) - USD ($) $ in Thousands |
3 Months Ended | |
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Mar. 31, 2017 |
Mar. 31, 2016 |
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Property acquisition costs: | ||
Evaluated | $ 0 | $ 0 |
Unevaluated | 0 | 0 |
Exploration costs | 15,543 | 7,263 |
Development costs | 111,158 | 81,886 |
Total costs incurred | 126,701 | 89,149 |
Asset Retirement Obligations | ||
Property acquisition costs: | ||
Development costs | $ 100 | $ 100 |
X | ||||||||||
- References No definition available.
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X | ||||||||||
- Definition Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have proved reserves. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have unproved reserves. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition Development costs incurred, including capitalized costs and costs charged to expense, in oil and gas activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition Exploration costs incurred, including capitalized costs and costs charged to expense, in oil and gas activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition Amount of costs incurred related to oil and gas property acquisition, exploration and development activities, including capitalized costs and costs charged to expense. No definition available.
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X | ||||||||||
- Details
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