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Oil and Gas Properties Additional Details (Details) - Jun. 30, 2015 - USD ($) $ in Thousands	Total	Total
Impairment of Oil and Gas Properties	$ 20,903
Impairment of Proved Oil and Gas Properties		$ 25,035
Results of Operations, Dry Hole Costs		9,752
Gain (Loss) on Disposition of Proved Property		$ 854
Net Mineral Acres Leased From Others		17168
Gross Producing Oil and Gas Wells Sold		2
Net Producing Oil and Gas Wells Sold		1
Proceeds from Sale of Oil and Gas Property and Equipment		$ 2,524
OKLAHOMA
Results of Operations, Dry Hole Costs		9,674
Capitalized Exploratory Well Cost, Charged to Expense		$ 917

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Gross Producing Oil and Gas Wells Sold

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Impairment of Proved Oil and Gas Properties

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Net Producing Oil and Gas Wells Sold

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Capitalized exploratory well costs that were expensed during the year because proved reserves were not found at the exploratory well.

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Amount of gain (loss) on sale or disposal of property with proven oil and gas reserves.

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The adjustment to reduce the value of existing agreements that specify the lessee's rights to use the leased property. This expense is charged when the estimates of future profits generated by the leased property are reduced.

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The cash inflow to dispose of long-lived, physical assets and mineral interests in oil and gas properties used for normal oil and gas operations.

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Dry hole costs from oil and gas producing activities.

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