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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Aug. 31, 2022 | Aug. 31, 2021
Income Taxes [Line Items] |  |
Valuation allowance | $ 1,203 | $ 1,091
Unrecognized tax benefits that would impact effective tax rate | 500 | 500
Interest and penalties recognized | 400 | 300
Accrued interest and penalties | $ 400 | 800
Maximum [Member] |  |
Income Taxes [Line Items] |  |
Percentage of Recognized largest amount benefit realized upon settlement | 50.00% |
Statutes of limitation range period | 6 years |
Minimum [Member] |  |
Income Taxes [Line Items] |  |
Statutes of limitation range period | 3 years |
Filtration Business [Member] |  |
Income Taxes [Line Items] |  |
Valuation allowance | $ 800 | 800
Certain Foreign Tax Jurisdiction [Member] |  |
Income Taxes [Line Items] |  |
Valuation allowance reserve in prior year |  | $ 1,700

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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