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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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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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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Additional share-based compensation cost recognized as a result of an occurrence of an event that accelerates its recognition.

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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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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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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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Number of shares for which recognition of compensation cost was accelerated.

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Intrinsic value of equity-based compensation awards vested. Excludes stock and unit options.

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Employee Incentive Plan, Performance Units, Grants in Period, Weighted Average Grant Date Value

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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Conversion Ratio

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Share Based Compensation - Narrative (Details) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended	12 Months Ended
	Oct. 31, 2016 $ / Unit	Dec. 31, 2016 USD ($) shares	Mar. 31, 2016 USD ($) shares	Oct. 01, 2016 USD ($) shares	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 USD ($) shares	Feb. 28, 2017 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares) \| shares				4,600,000
Predecessor
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested awards				$ 5,900
Share-based compensation expense				11,200
Share-based compensation, capitalized				1,700
Severance, compensation cost of accelerated shares				$ 5,119
Severance, number of accelerated shares (in shares) \| shares				1,240,000
Predecessor \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)				4 years
Severance, compensation cost of accelerated shares			$ 5,400
Severance, number of accelerated shares (in shares) \| shares			1,300,000
Successor
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Severance, compensation cost of accelerated shares		$ 4,286			$ 13,131	$ 1,825
Severance, number of accelerated shares (in shares) \| shares		191,000			763,000	96,000
Successor \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested awards					$ 4,700
Period of recognition for unrecognized costs					2 years 2 months 12 days
Aggregate intrinsic value of restricted stock vested during period					$ 16,000
Successor \| Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value of restricted stock vested during period					2,700
Performance share plan, conversion to common stock (in shares) \| shares							1
Successor \| Performance Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value of restricted stock vested during period					$ 4,800
Weighted average grant date fair value \| $ / Unit	100
Minimum \| Successor \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)					1 year
Maximum \| Successor \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)					3 years