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Stock-Based Compensation (Narrative) (Details)		3 Months Ended		9 Months Ended
Stock-Based Compensation (Narrative) (Details)	Oct. 18, 2019 item shares	May 31, 2020 USD ($) shares	Feb. 29, 2020 USD ($)	May 31, 2020 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued under terms of the award				281,479
Fiscal 2020 Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of tranches \| item	3
Expiration date	Aug. 31, 2022
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		10,948		26,375
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares withheld for tax				103,117
Shares withheld for tax, fair value \| $				$ 3,600,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares withheld for tax				102,656
Shares withheld for tax, fair value \| $				$ 3,600,000
Expiration date				Jan. 31, 2021
Aggregate intrinsic value \| $			$ 8,000,000
Income tax benefit from exercise of stock options \| $			$ 1,800,000
Restricted Stock Awards [Member] \| Director [Member] \| Fiscal 2020 Restricted Stock Award Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Whole-share grant per eligible director \| $				$ 100,000
Vesting period of awards				1 year
Restricted Stock Awards [Member] \| Board of Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense \| $		$ 400,000		$ 400,000
Time-Based Award [Member] \| Fiscal 2020 Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of tranches \| item	1
Performance-Based Award [Member] \| Fiscal 2020 Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of tranches \| item	2
Tranche One [Member] \| Time-Based Award [Member] \| Fiscal 2020 Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of shares plan participants are entitled to	25.00%
Vesting period of awards	3 years
Shares issued under terms of the award	25,101
Tranche Two and Three [Member] \| Performance-Based Award [Member] \| Fiscal 2020 Long Term Incentive Plan [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	75,315
Tranche Two and Three [Member] \| Performance-Based Award [Member] \| Minimum [Member] \| Fiscal 2020 Long Term Incentive Plan [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 2020 Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of performance award to be granted	200.00%
New shares granted	150,630