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Receivables, net - Additional Information (Details) | 3 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Document Period End Date | Dec. 31, 2017 |  |
Credit Concentration Risk [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Percentage of net sales from major customer | 35.10% | 35.50% |
Percentage Of Accounts Receivable Three Major Customers | 29.30% |  | 36.20%

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- Definition The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD. + References No definition available. + Details
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- Definition Percentage Of Accounts Receivable Three Major Customers + References No definition available. + Details
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- Definition Percentage Of Net Sales Due To Customers + References No definition available. + Details
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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. + Details
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- Details
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