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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The amount of employee and related claims included in liabilities subject to compromise.

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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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No definition available.

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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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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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Share-Based Compensation - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 31, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Oct. 04, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation liability transferred to liabilities subject to compromise		$ 0.6		$ 0.6
Share-based compensation expense		1.8	$ 3.6	11.2	$ 17.5
Share-based compensation, capitalized		0.5	$ 0.9	1.7	$ 3.2
Accelerated vesting compensation cost				$ 5.4
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				4 years
Unrecognized compensation cost related to unvested awards		$ 5.9		$ 5.9
Unrecognized compensation cost, period of recognition				1 year 6 months
Accelerated vesting (in shares)				1,300,000
Granted (in shares)				0
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Accelerated vesting (in shares)				1,800,000
Company Management \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Accelerated vesting (in shares)				1,300,000
Subsequent Event \| Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance						4,597,163
Subsequent Event \| Omnibus Incentive Plan \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Granted (in shares)	1,400,000