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Recent Transactions (Details) - Successor - Drilling Participation Agreement - NW Stack $ in Millions | 3 Months Ended
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Sep. 30, 2017 USD ($)
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items] |
Percent of development costs to be funded | 10.00%
Initial working interest per well | 20.00%
Working interest per well if achievement of 10% IRR | 65.00%
Working interest per well if achievement of 15% IRR | 89.00%
Private Investment Fund |
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items] |
Drilling participation agreement commitment | $ 200.0
Percent of development costs to be funded | 90.00%
Drilling costs to be funded | $ 100.0
Initial working interest per well | 80.00%
Optional additional funding | $ 100.0
Working interest per well if achievement of 10% IRR | 35.00%
Working interest per well if achievement of 15% IRR | 11.00%

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