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Acquisitions and Dispositions of Oil and Gas Properties - Additional Information (Detail) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2016 USD ($) | Jan. 31, 2016 a Well | Jul. 31, 2015 USD ($) | Dec. 31, 2016 USD ($) | Sep. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Sep. 30, 2015 USD ($) | Jun. 30, 2015 USD ($) | Mar. 31, 2015 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property exchange net acres received | a |  | 3,637 |  |  |  |  |  |  |  |  |  |  |  |
Property exchange gross wells received | Well |  | 4 |  |  |  |  |  |  |  |  |  |  |  |
Property exchange net wells received | a |  | 3.5 |  |  |  |  |  |  |  |  |  |  |  |
Property exchange net acres disposed | a |  | 2,547 |  |  |  |  |  |  |  |  |  |  |  |
Property exchange gross wells disposed | Well |  | 7 |  |  |  |  |  |  |  |  |  |  |  |
Property exchange net wells disposed | a |  | 5.3 |  |  |  |  |  |  |  |  |  |  |  |
Gain on property exchange of oil and gas properties |  |  |  |  |  |  |  |  |  |  |  | $ 700 |  |
Net proceeds from sale of oil and gas properties |  |  |  |  |  |  |  |  |  |  |  | 2,100 |  |
Loss on sale of oil and gas properties |  |  |  |  |  |  |  |  |  |  |  | 1,600 |  |
Impairment of oil and gas properties |  |  |  | $ 2,561 | $ 113 | $ 1,742 | $ 22,718 | $ 254,246 | $ 544,714 | $ 1,984 | $ 403 | 27,134 | $ 801,347 | $ 60,268
Burleson County, Texas |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net proceeds from sale of oil and gas properties |  |  | $ 102,500 |  |  |  |  |  |  |  |  |  |  |
Loss on sale of oil and gas properties |  |  | $ 112,100 |  |  |  |  |  |  |  |  |  |  |
South Texas |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net proceeds from sale of oil and gas properties | $ 25,800 |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on sale of oil and gas properties |  |  |  |  |  |  |  |  |  |  |  | 13,400 |  |
Impairment of oil and gas properties |  |  |  |  |  |  | $ 20,800 |  |  |  |  | $ 20,800 |  |

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