Plan of Reorganization, Percentage of Common Stock Issued in Reorganization to Existing Shareholders

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Plan of Reorganization, Percentage of Warrants Issued in Reorganization

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Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross, Value

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Amount of increase (decrease) in additional paid in capital (APIC) resulting from a tax benefit (deficiency) associated with an share-based compensation plan other than an employee stock ownership plan (ESOP).

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Amount of decrease in additional paid in capital (APIC) resulting from a tax deficiency associated with a share-based compensation plan other than an employee stock ownership plan (ESOP).

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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-Publisher FASB
-Name Accounting Standards Codification
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Represents the compensation cost capitalized during the period arising from equity-based compensation arrangements (for example, shares of stock, units, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Unrecognized cost of unvested share-based compensation awards.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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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Net number of share options (or share units) granted during the period.

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Price of a single share of a number of saleable stocks of a company.

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Aggregate value of stock related to Restricted Stock Awards issued during the period.

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SHARE-BASED COMPENSATION - Additional Information (Details) - USD ($)		2 Months Ended	10 Months Ended	12 Months Ended
	Feb. 15, 2017	Feb. 28, 2017	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Adjustments to additional paid-in capital related to net tax effect of stock options exercises and restricted stock vesting				$ 0
Net tax impact from stock option exercises and restricted stock vesting			$ 2,500,000
Restricted stocks issued, shares (in shares)			0
Per share value (in usd per share)		$ 26.95
RSA
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of common stock issued in reorganization to existing shareholders	5.00%
Percentage of warrants issued in reorganization (up to)	15.00%
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation			$ 100,000
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation			1,200,000
Aggregate grant date fair value			1,700,000
Unrecognized compensation cost			$ 500,000	$ 500,000
Vesting period of restricted stock units			4 months
Director \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stocks issued, shares (in shares)			62,137
Predecessor
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Adjustments to additional paid-in capital related to net tax effect of stock options exercises and restricted stock vesting					$ 0
Net tax impact from stock option exercises and restricted stock vesting		$ 2,700,000			4,100,000	$ 1,300,000
Share-based compensation		3,500,000			11,600,000	17,900,000
Share-based compensation capitalized into oil and gas properties		$ 900,000			$ 3,100,000	$ 5,600,000
Stock option granted (in shares)		0
Restricted stocks issued, shares (in shares)					31,313	141,872
Restricted stocks issued, value					$ 300,000	$ 23,700,000
Predecessor \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stocks issued, shares (in shares)		10,404
Restricted stocks issued, value		$ 69,000