Other (Details) |
6 Months Ended |
|---|---|
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Jun. 30, 2017
contract
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| Horizontal Drilling Rig | |
| Operating Leases And Other Property Plant And Equipment [Line Items] | |
| Number of contracts | 4 |
| X | ||||||||||
- Definition Number of contracts. No definition available.
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| X | ||||||||||
- Definition Operating Leases And Other Property Plant And Equipment [Line Items] No definition available.
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| X | ||||||||||
- Details
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