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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, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2015
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
NET SALES | $ 207,005 | $ 171,189 | $ 161,178 | $ 146,368 | $ 159,505 | $ 140,191 | $ 138,930 | $ 132,833 | $ 685,740 | $ 571,459 | $ 537,291
Consolidated EBIT |  |  |  |  |  |  |  |  | 84,700 | 69,700 | 62,300
Less: interest expense |  |  |  |  |  |  |  |  | (4,578) | (1,308) | (785)
Earnings before income taxes |  |  |  |  |  |  |  |  | 80,153 | 68,420 | 61,521
Filtration [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
NET SALES |  |  |  |  |  |  |  |  | 279,500 | 207,800 | 196,700
Consolidated EBIT |  |  |  |  |  |  |  |  | 52,200 | 45,200 | 41,700
Test [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
NET SALES |  |  |  |  |  |  |  |  | 160,900 | 161,500 | 177,600
Consolidated EBIT |  |  |  |  |  |  |  |  | 19,500 | 13,900 | 9,500
Utility Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
NET SALES |  |  |  |  |  |  |  |  | 162,400 | 127,800 | 123,600
Consolidated EBIT |  |  |  |  |  |  |  |  | 36,600 | 31,100 | 29,600
Technical Packaging [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
NET SALES |  |  |  |  |  |  |  |  | 82,900 | 74,400 | 39,400
Consolidated EBIT |  |  |  |  |  |  |  |  | 8,500 | 9,600 | 4,900
Corporate (loss) [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Consolidated EBIT |  |  |  |  |  |  |  |  | $ (32,100) | $ (30,100) | $ (23,400)

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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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