Stock-Based Compensation Plans (Narrative) (Details) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended	12 Months Ended
	Jan. 23, 2015 shares	Apr. 30, 2014 USD ($) $ / shares shares	Aug. 31, 2015 USD ($) item $ / shares shares	Aug. 31, 2016 USD ($) employee item $ / shares shares	Aug. 31, 2015 USD ($) employee $ / shares shares	Aug. 31, 2014 USD ($) employee shares	Aug. 31, 2013	Aug. 31, 2012 item shares	Aug. 31, 2011 USD ($)	Nov. 12, 2015 item shares	Nov. 30, 2013 item shares	Dec. 01, 2012 item shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued from treasury stock | shares				81,757
Shares withheld for tax | shares				2,260
Capitalized stock-based compensation expense				$ 0	$ 0	$ 0
Stock-based compensation expense				$ 3,121	$ 2,536	$ 3,534
Exercise price | $ / shares			$ 11.41	$ 11.41	$ 11.41
Stock options exercised | shares
Aggregate intrinsic value				$ 3,052
Fiscal 2011 Grant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting price per share | $ / shares				$ 17.00
Average share price | $ / shares				11.34
Fiscal 2012 Grant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting price per share | $ / shares				18.05
Average share price | $ / shares				9.55
Fiscal 2013 Grant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting price per share | $ / shares				22.00
Average share price | $ / shares				16.03
Fiscal 2014 Grant 1 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting price per share | $ / shares				22.00
Average share price | $ / shares				19.68
Fiscal 2014 Grant 2 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average share price | $ / shares				20.01
Stock-based compensation expense		$ 200
Minimum [Member] | Fiscal 2014 Grant 2 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting price per share | $ / shares				18.05
Maximum [Member] | Fiscal 2014 Grant 2 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting price per share | $ / shares				$ 22.00
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense				$ 0
Stock options exercised | shares				0	0	43,750
Aggregate intrinsic value						$ 500
Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based incremental compensation expense from plan modification				$ 700
Recognized stock-based incremental compensation expense from plan modification					$ 500
Number of tranches | item				0
Stock-based compensation expense				$ 2,492	1,890	$ 2,716
Fiscal 2016 Long Term Incentive Plan Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized to be issued | shares										231,276
Number of individual vesting conditions | item										6
Number of performance measures | item										2
Fiscal 2015 Long Term Incentive Plan Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized to be issued | shares				112,464
Number of individual vesting conditions | item				6
Number of performance measures | item				2
Fiscal 2015 Long Term Incentive Plan Award [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Life of awards				6 years
Fiscal 2014 Long Term Incentive Plan Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized to be issued | shares											89,418
Number of individual vesting conditions | item											6
Number of performance measures | item											2
Fiscal 2013 Long Term Incentive Plan Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized to be issued | shares												68,085
Number of individual vesting conditions | item												6
Number of performance measures | item												2
Fiscal 2012 Long Term Incentive Plan Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized to be issued | shares								106,101
Number of individual vesting conditions | item								6
Number of performance measures | item								2
Common Stock Price Performance Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period which common stock price must average over specified levels				5 days
Percent of performance award to be granted							0.25%	0.25%	0.50%
Number of employees with additional supplemental award | employee						3
Unvested Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense				$ 200
Stock-based compensation expense				450	$ 400	$ 334
Whole-share grant per eligible director				$ 75
Vesting period of awards				1 year
Shares issued under terms of the award | shares			24,210	25,032	24,210	14,616
Fair value of shares awarded				$ 500	$ 500	$ 300
Cost of common stock issued from treasury				$ 300	300	200
Weighted-average vesting period for recognition				3 months
Total recognized tax benefit from unvested stock awards				$ 100	$ 100	$ 100
Intrinsic value of unvested stock awards				$ 400
Client Partner And Consultant Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of additional individual vesting conditions | item			0
Value of shares granted and fully vested			$ 10						$ 15
Number of individuals who qualified for award | employee				4	5	12
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
2015 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized additional shares of common stock for issuance | shares	1,000,000
Shares available for granting | shares				705,000
Shares remaining in employee stock purchase plan | shares				440,000
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense				$ 119	$ 121	$ 113
Price of common stock as a percent of the average fair market value				85.00%
Shares issued to employee stock purchase plan participants | shares				49,375	42,687	36,761
Cost basis of shares issued to employee stock purchase plan participants				$ 700	$ 600	$ 500
Proceeds from ESPP participants				$ 700	$ 700	$ 600
Tranche One [Member] | Fiscal 2014 Grant 2 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted | shares		9,557
Vesting price per share | $ / shares		$ 18.05
Tranche Two [Member] | Fiscal 2014 Grant 2 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted | shares		3,920
Vesting price per share | $ / shares		$ 22.00
3 Years Or Less [Member] | Common Stock Price Performance Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period to achieve specified levels of common stock price				3 years
Percent of shares which will vest				100.00%
3 To 5 Years [Member] | Common Stock Price Performance Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of shares which will vest				50.00%
3 To 5 Years [Member] | Common Stock Price Performance Award [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period to achieve specified levels of common stock price				3 years
3 To 5 Years [Member] | Common Stock Price Performance Award [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period to achieve specified levels of common stock price				5 years
After 5 Years [Member] | Common Stock Price Performance Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of the specific price target were met				5 years
Target number of shares expected to vest | shares				0