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Stock-Based Compensation Plans (Narrative) (Details) $ / shares in Units, $ in Thousands					12 Months Ended
	Jan. 25, 2019 USD ($) $ / shares shares	Oct. 01, 2018 item shares	Jan. 26, 2018 shares	Nov. 14, 2017 item shares	Aug. 31, 2019 USD ($) item employee shares	Aug. 31, 2018 USD ($) employee shares	Aug. 31, 2017 USD ($) employee shares	Oct. 18, 2016 item shares	Nov. 12, 2015 item shares	Aug. 31, 2015 item shares	Nov. 30, 2013 item shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued from treasury stock					72,787
Capitalized stock-based compensation expense \| $					$ 0	$ 0	$ 0
Number of shares withheld for statutory income taxes					561
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense \| $					$ 0
Stock options exercised							62,500
Aggregate intrinsic value \| $							$ 500
Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized stock-based incremental compensation expense from plan modification \| $						$ 600
Fiscal 2019 Long Term Incentive Plan Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
New shares granted		36,470
Shares authorized to be issued		218,818
Number of tranches \| item		3
Life of awards		3 years
Expiration date		Aug. 31, 2021
Percent of shares plan participants are entitled to		25.00%
Vesting period of awards		3 years
Fiscal 2018 Long Term Incentive Plan Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized to be issued				257,300
Number of tranches \| item				3
Life of awards				3 years
Expiration date				Aug. 31, 2020
Fiscal 2017 Long Term Incentive Plan Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized to be issued								183,381
Number of individual vesting conditions \| item								6
Number of performance measures \| item								2
Shares vested					97,803
Number of tranches \| item					4
Life of awards					6 years
Expiration date					Aug. 31, 2022
Fiscal 2016 Long Term Incentive Plan Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized to be issued									231,276
Number of individual vesting conditions \| item									6
Number of performance measures \| item									2
Shares vested					123,348
Number of tranches \| item					4
Life of awards					6 years
Expiration date					Aug. 31, 2021
Fiscal 2015 Long Term Incentive Plan Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized to be issued										112,464
Number of individual vesting conditions \| item										6
Number of performance measures \| item										2
Shares vested					59,980
Number of tranches \| item					4
Life of awards					6 years
Expiration date					Aug. 31, 2020
Fiscal 2014 Long Term Incentive Plan Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized to be issued											89,418
Number of individual vesting conditions \| item											6
Number of performance measures \| item											2
Shares vested					47,690
Number of tranches \| item					4
Life of awards					6 years
Expiration date					Aug. 31, 2019
Shares expired unvested					41,728
Fiscal 2019 Time Based Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Price per share \| $ / shares	$ 24.54
Vesting period of awards	2 years
Shares issued under terms of the award	11,915
Fair value of shares awarded \| $	$ 300
Client Partner And Consultant Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Value of shares granted and fully vested \| $					$ 15
Number of individuals who qualified for award \| employee					4	1	9
Threshold of cumulative sales over the career in order to receive common stock \| $					$ 20,000
Threshold of consulting days performed over the career in order to receive common stock					1500 days
Omnibus Incentive Plan 2019 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized additional shares of common stock for issuance	700,000
Shares available for future grants					662,000
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense \| $					$ 200
Whole-share grant per eligible director \| $					$ 100
Vesting period of awards					1 year
Cost of common stock issued from treasury \| $					$ 400	$ 300	$ 400
Weighted-average vesting period for recognition					4 months
Total recognized tax benefit from unvested stock awards \| $					$ 200	$ 200	$ 200
Intrinsic value of unvested stock awards \| $					$ 1,000
Restricted Stock Awards [Member] \| Board of Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued under terms of the award					28,525	23,338	29,834
Fair value of shares awarded \| $					$ 700	$ 700	$ 500
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					43,073	40,941	43,199
Cost basis of shares issued to employee stock purchase plan participants \| $					$ 600	$ 600	$ 600
Proceeds from ESPP participants \| $					$ 1,000	$ 800	$ 700
2017 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized additional shares of common stock for issuance			1,000,000
Shares remaining in employee stock purchase plan					903,000
Tranche One [Member] \| Fiscal 2018 Long Term Incentive Plan Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
New shares granted				42,883
Percent of shares plan participants are entitled to				25.00%
Vesting period of awards				3 years
Tranche Two And Three [Member] \| Fiscal 2019 Long Term Incentive Plan Award [Member] \| Minimum [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] \| Fiscal 2019 Long Term Incentive Plan Award [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of performance award to be granted		200.00%
Tranche Two And Three [Member] \| Fiscal 2018 Long Term Incentive Plan Award [Member] \| Minimum [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] \| Fiscal 2018 Long Term Incentive Plan Award [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of performance award to be granted				200.00%