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Retirement Benefit Plans - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Compensation and Retirement Disclosure [Abstract]
Contributions amount in defined benefit pension plans	$ 0	$ 382

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- References

No definition available.

+ Details

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X

- Definition

The increase in the fair value of plan assets from contributions made by the employer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 715



-SubTopic 20



-Section 50



-Paragraph 1



-Subparagraph (b)(3)



-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

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