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Summary of Significant Accounting Policies (Inventories) (Details) | Sep. 30, 2017 | Sep. 30, 2016
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Percentage of weighted average cost inventory | 55.00% | 50.00%

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- Definition The percentage of weighted average cost inventory present at the reporting date when inventory is valued using different valuation methods. + References No definition available. + Details
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