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Basis of Presentation - Additional Information (Detail) | 9 Months Ended
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Sep. 30, 2018
MS Directional |
Basis Of Consolidation And Presentation [Line Items] |
Merger date | Oct. 11, 2017
Seventy Seven Energy Inc. |
Basis Of Consolidation And Presentation [Line Items] |
Merger date | Apr. 20, 2017

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