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Business Segment Information - Depreciation And Amortization (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017
Depreciation and Amortization | $ 40,050 | $ 37,755 | $ 32,229
Filtration |  |  |
Depreciation and Amortization | 8,300 | 7,600 | 6,600
USG |  |  |
Depreciation and Amortization | 11,300 | 11,000 | 9,800
Test |  |  |
Depreciation and Amortization | 5,100 | 4,500 | 3,600
Technical Packaging |  |  |
Depreciation and Amortization | 4,100 | 4,100 | 3,500
Corporate |  |  |
Depreciation and Amortization | $ 11,300 | $ 10,600 | $ 8,700

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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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