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Accounts Receivable (Schedule Of Accounts Receivable Net Of Allowance For Doubtful Accounts) (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Sep. 30, 2017
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accounts receivable, Total | $ 163,740 | $ 160,580
Commercial [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accounts receivable, Total | 146,049 | 152,265
U.S. Government and prime contractors [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accounts receivable, Total | $ 17,691 | $ 8,315

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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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- Definition Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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