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Business Segment Information (Schedule Of Net Sales And Earnings Before Income Tax) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2014
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 159,505 | $ 140,191 | $ 138,930 | $ 132,833 | $ 153,612 | $ 134,191 | $ 128,941 | $ 120,547 | $ 571,459 | $ 537,291 | $ 531,120
Consolidated EBIT |  |  |  |  |  |  |  |  | 69,700 | 62,300 | 63,800
Less: Interest expense |  |  |  |  |  |  |  |  | (1,308) | (785) | (1,567)
Earnings before income taxes |  |  |  |  |  |  |  |  | 68,420 | 61,521 | 62,207
Filtration [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 207,800 | 196,700 | 196,500
Consolidated EBIT |  |  |  |  |  |  |  |  | 45,200 | 41,700 | 36,400
Technical Packaging [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 74,400 | 39,400 | 37,200
Consolidated EBIT |  |  |  |  |  |  |  |  | 9,600 | 4,900 | 5,000
Test [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 161,500 | 177,600 | 181,800
Consolidated EBIT |  |  |  |  |  |  |  |  | 13,900 | 9,500 | 21,100
Utility Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 127,800 | 123,600 | 115,600
Consolidated EBIT |  |  |  |  |  |  |  |  | 31,100 | 29,600 | 26,600
Corporate (loss) [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Consolidated EBIT |  |  |  |  |  |  |  |  | $ (30,100) | $ (23,400) | $ (25,300)

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- Definition Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount of income (loss) from continuing operations, nonoperating income (expense) and income (loss) from equity method investments, before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of interest income (expense). + References No definition available. + Details
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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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