The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ References

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-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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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).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 2
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The weighted average fair value at grant date for nonvested equity-based awards issued 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).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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-Publisher FASB
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

+ References

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Share Based Compensation - Summary of Unvested Restricted Stock Awards (Details) - $ / shares	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2016	Oct. 01, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2015
Number of Shares
Unvested shares/units outstanding at end of period (in shares)			400,000
Successor \| Restricted Stock
Number of Shares
Unvested shares/units outstanding at beginning of period (in shares)	0		1,105,000	1,407,000
Granted (in shares)	1,448,000		370,000	671,000
Vested (in shares)	(14,000)		(1,066,000)	(827,000)
Forfeited / Canceled (in shares)	(27,000)		(44,000)	(146,000)
Unvested shares/units outstanding at end of period (in shares)	1,407,000	0	365,000	1,105,000
Weighted- Average Grant Date Fair Value (usd per share)
Unvested shares/units outstanding (in usd per share)	$ 24.32	$ 0	$ 16.07	$ 22.62
Granted (in usd per share)	24.32		16.00	19.97
Vested (in usd per share)	24.32		22.63	23.23
Forfeited / Canceled (in usd per share)	$ 24.32		$ 21.04	$ 23.52
Successor \| Performance Shares
Number of Shares
Unvested shares/units outstanding at beginning of period (in shares)			183,000	0
Granted (in shares)			111,000	199,000
Vested (in shares)			(177,000)	0
Forfeited / Canceled (in shares)			(6,000)	(16,000)
Unvested shares/units outstanding at end of period (in shares)	0		111,000	183,000
Weighted- Average Grant Date Fair Value (usd per share)
Unvested shares/units outstanding (in usd per share)			$ 20.41
Granted (in usd per share)
Vested (in usd per share)
Forfeited / Canceled (in usd per share)
Successor \| Performance Units
Number of Shares
Unvested shares/units outstanding at beginning of period (in shares)	0		49,000	87,000
Granted (in shares)	97,000		0	0
Vested (in shares)	(1,000)		(48,000)	(32,000)
Forfeited / Canceled (in shares)	(9,000)		(1,000)	(6,000)
Unvested shares/units outstanding at end of period (in shares)	87,000	0	0	49,000
Weighted- Average Grant Date Fair Value (usd per share)
Unvested shares/units outstanding (in usd per share)			$ 0
Granted (in usd per share)
Vested (in usd per share)
Forfeited / Canceled (in usd per share)
Predecessor \| Restricted Stock
Number of Shares
Unvested shares/units outstanding at beginning of period (in shares)	0	5,626,000
Granted (in shares)		0
Vested (in shares)		(3,034,000)
Forfeited / Canceled (in shares)		(2,592,000)
Unvested shares/units outstanding at end of period (in shares)		0
Weighted- Average Grant Date Fair Value (usd per share)
Unvested shares/units outstanding (in usd per share)		$ 0			$ 4.85
Granted (in usd per share)		0
Vested (in usd per share)		5.34
Forfeited / Canceled (in usd per share)		$ 4.31