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Short-Term Debt - Additional Information (Detail) - USD ($)	12 Months Ended
	Jun. 30, 2017	Aug. 31, 2016
Short-term Debt [Line Items]
Loss on extinguishment of debt	$ 1,300,000
Term Loan [Member]
Short-term Debt [Line Items]
Term loan maturity date	Aug. 31, 2017
Scheduled principal payments of term loan prior to maturity date	$ 0
Short-term debt		$ 200,000,000

X

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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X

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

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X

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 50
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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

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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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