Asset Retirement Obligation, Liabilities Related To Oil And Gas Properties Sold

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- Definition

Business Combination, Acres Acquired

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- Definition

Proceeds From Refunds Related To Disposal

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- Definition

Carrying amount as of the balance sheet date of cash collateral held for borrowed securities, for which the cash is restricted as to withdrawal or usage.

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- Definition

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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No definition available.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Minimum amount to be expended to satisfy the terms of arrangements in which the entity has agreed to expend funds to procure goods or services, excluding long-term purchase commitments or unconditional purchase obligations.

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- Definition

Number of shares of stock issued during the period pursuant to acquisitions.

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Acquisitions and Divestitures (Details) $ in Thousands, shares in Millions			1 Months Ended	12 Months Ended
	Jan. 31, 2018 USD ($)	Dec. 20, 2017 USD ($) a	Jan. 31, 2018 USD ($)	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 USD ($)	Dec. 15, 2017 USD ($)	Apr. 17, 2017 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Decrease in asset retirement obligation liabilities related to divestiture of oil and gas properties				$ 28,234	$ 248
Deposit for surety bonds				3,550	$ 8,300
Interests in East Lake Verret Field
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received from sale							$ 2,200
Saltwater Disposal Assets in East Texas
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received from sale						$ 8,500
Gulf of Mexico Properties
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Purchase commitment	$ 3,800		$ 3,800
Decrease in asset retirement obligation liabilities related to divestiture of oil and gas properties			$ 28,200
Proceeds from refunds related to disposal	4,500
Deposit for surety bonds				3,600
Austin Chalk Acreage
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Acres acquired \| a		24,600
Purchase price		$ 9,300		$ 15,000
Common shares issued in connection with acquisition \| shares				2.0
Pro Forma \| Gulf of Mexico Properties
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Decrease in asset retirement obligation liabilities related to divestiture of oil and gas properties	$ 28,200