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Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Commitments And Contingencies Disclosure [Abstract] |  |  |
Rent expense under noncancelable operating leases | $ 1.5 | $ 1.5 | $ 1.5
Commitments for contracted drilling services | $ 2.8 |  |
Contract term related to drilling rigs | through April 2017 |  |
Natural gas transportation and treating agreements | through July 2019 |  |
Maximum commitments under natural gas transportation and treating agreements | $ 4.2 |  |

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- Definition Commitments for contracted drilling services. + References No definition available. + Details
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- Definition Contract terms related to drilling services. + References No definition available. + Details
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- Definition Maximum commitments under natural gas transportation agreements. + References No definition available. + Details
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- Definition Natural gas transportation agreement term. + References No definition available. + Details
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Balance Type: | na
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- References No definition available. + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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