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Minimum period the individual is required to perform services to be fully vested under the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Purchase price of common stock expressed as a percentage of its fair value.

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Value, before forfeiture, of shares granted under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

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Stock-Based Compensation (Narrative) (Details) $ in Thousands		3 Months Ended				6 Months Ended
	Oct. 02, 2020 USD ($) item shares	Feb. 28, 2021 USD ($) shares	Nov. 30, 2020 USD ($)	Feb. 29, 2020 USD ($)	Nov. 30, 2019 USD ($)	Feb. 28, 2021 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued under terms of the award \| shares		170,992				407,125
Fiscal 2020 Restricted Stock Award Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Whole-share grant per eligible director						$ 100
Vesting period of awards						1 year
Fiscal 2021 Long Term Incentive Plan Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of tranches \| item	2
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Price of common stock as a percent of the average fair market value						85.00%
Shares issued to employee stock purchase plan participants \| shares		11,045				26,142
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares withheld for tax \| shares		58,388				147,092
Shares withheld for tax, fair value						$ 3,000
Cost of common stock issued from treasury
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares withheld for income taxes \| shares		51,738
Fair value of withheld shares for income taxes		$ 1,300
Intrinsic value of the exercised options		2,900
Income tax benefit from exercise of stock options		700
Restricted Stock Awards [Member] \| Board Of Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense		$ 600				$ 600
Time-Based Award [Member] \| Fiscal 2021 Long Term Incentive Plan Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of tranches \| item	1
Performance-Based Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period	2 years
Increase Adjusted EBITDA vesting target	$ 2,000
Performance-Based Award [Member] \| Fiscal 2021 Long Term Incentive Plan Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of tranches \| item	1
Tranche One [Member] \| Time-Based Award [Member] \| Fiscal 2021 Long Term Incentive Plan Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of shares plan participants are entitled to	25.00%
Shares issued under terms of the award \| shares	52,696
Tranche Two and Three [Member] \| Performance-Based Award [Member] \| Fiscal 2021 Long Term Incentive Plan Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of performance-based objectives	100.00%
Shares issued under terms of the award \| shares	158,088
Tranche Two and Three [Member] \| Performance-Based Award [Member] \| Minimum [Member] \| Fiscal 2021 Long Term Incentive Plan Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of performance award to be granted	50.00%
Tranche Two and Three [Member] \| Performance-Based Award [Member] \| Maximum [Member] \| Fiscal 2021 Long Term Incentive Plan Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of performance award to be granted	200.00%
Shares may be awarded \| shares	316,176