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Inventories (Detail) - USD ($) $ in Millions | Sep. 30, 2016 | Sep. 30, 2015
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Inventory Disclosure [Abstract] |  |
Other Inventory, Capitalized Costs, Gross | $ 0.1 | $ 0.1

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- Definition Gross amount of an expenditure that is incurred which is not expensed in the current period but rather capitalized as a component of inventory. + 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 210.5-02.6(a) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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