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Stock-Based Compensation (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2025	Feb. 28, 2025	May 31, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued from treasury stock	20,841		426,114
Shares withheld for tax			146,000
Annual Long Term Incentive Performance And Retention Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of awards			3 years
Shares issued under terms of the award			92,930
Annual Long Term Incentive Performance And Retention Plan [Member] | Vest August 31 Of Each Year Following Grant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of award shares vest			33.30%
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	16,020		36,816
Unvested Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of awards			1 year
Whole-share grant per eligible director			$ 120
Long-Term Incentive Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reduction of stock-based compensation		$ 1,000

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