Share-based Compensation and Employee Benefit Plans - Predecessor Equity Plan (Details) $ in Millions	3 Months Ended
Dec. 31, 2016 USD ($) vesting_installment shares	Dec. 31, 2015 USD ($)
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested (in shares) \| shares	0
Predecessor \| Series B Membership Interest
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of units vesting by term of employment	50.00%
Percentage of units vesting annually	20.00%
Vesting period	5 years
Percentage of units vesting by performance basis	50.00%
Number of twelve-month vesting periods \| vesting_installment	5
Selling, general and administrative expenses \| Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	$ 1.1
Selling, general and administrative expenses \| Predecessor \| Time Based Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost		$ 0.3

Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Twelve-Month Vesting Periods

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period, Percentage of Units Vesting by Performance Basis

+ References

No definition available.

+ Details

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period, Percent of Awards Vested on Time

+ References

No definition available.

+ Details

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

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.

+ References

No definition available.

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- Definition

Percentage of vesting of share-based compensation awards.

+ References

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- Definition

Amount of capitalized and expensed compensation cost from equity-based compensation arrangements.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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