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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2011
Tax Credit Carryforward [Line Items]
NOL allocated amount		$ 3,650,000
Afg [Member]
Tax Credit Carryforward [Line Items]
NOL allocated amount	$ 1,398,610
U. S. Federal Net Operating Tax [Member]
Tax Credit Carryforward [Line Items]
NOL allocated amount	3,549,614
Successor [Member]
Tax Credit Carryforward [Line Items]
TCJA Impact, Deferred Tax Asset, Compensation	$ (423)

X

- Definition

TCJA Impact, Deferred Tax Asset, Compensation

+ References

No definition available.

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- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319

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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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