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BUSINESS SEGMENT INFORMATION (Schedule Of Net Sales And Earnings Before Income Tax) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
NET SALES	$ 173,495	$ 146,368
Consolidated EBIT	14,986	16,809
Less: Interest expense, net	(2,185)	(684)
Earnings before income taxes	12,801	16,125
Filtration [Member]
Segment Reporting Information [Line Items]
NET SALES	60,035	58,785
Consolidated EBIT	9,645	10,726
Test [Member]
Segment Reporting Information [Line Items]
NET SALES	37,530	33,827
Consolidated EBIT	2,596	2,425
Utility Solutions [Member]
Segment Reporting Information [Line Items]
NET SALES	55,754	35,556
Consolidated EBIT	10,651	9,674
Technical Packaging [Member]
Segment Reporting Information [Line Items]
NET SALES	20,176	18,200
Consolidated EBIT	965	1,031
Corporate (loss) [Member]
Segment Reporting Information [Line Items]
Consolidated EBIT	$ (8,871)	$ (7,047)

X

- 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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.10)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

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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

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