BUSINESS SEGMENT INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
BUSINESS SEGMENT INFORMATION
NET SALES	$ 199,766	$ 192,223	$ 576,312	$ 540,496
Consolidated EBIT	26,865	25,559	75,292	56,165
Less: interest expense	(1,973)	(2,243)	(5,788)	(6,464)
Earnings before income taxes	24,892	23,316	69,504	49,701
Filtration
BUSINESS SEGMENT INFORMATION
NET SALES	83,067	69,721	228,769	195,531
Consolidated EBIT	19,039	14,292	47,092	35,056
Test
BUSINESS SEGMENT INFORMATION
NET SALES	42,298	45,034	126,459	123,368
Consolidated EBIT	5,927	5,902	14,791	13,797
USG
BUSINESS SEGMENT INFORMATION
NET SALES	52,894	55,489	157,639	157,942
Consolidated EBIT	10,148	11,528	40,461	27,805
Technical Packaging
BUSINESS SEGMENT INFORMATION
NET SALES	21,507	21,979	63,445	63,655
Consolidated EBIT	1,625	2,505	3,333	5,355
Corporate (loss)
BUSINESS SEGMENT INFORMATION
Consolidated EBIT	$ (9,874)	$ (8,668)	$ (30,385)	$ (25,848)

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.

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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).

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The net amount of operating interest income (expense).

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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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.

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