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Shared Based Compensation (Tables) | 12 Months Ended
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Aug. 31, 2015
Share Based Compensation [Abstract] |
Schedule Of Share-Based Compensation Expense |
|  |  | For the years ended August 31,
$ in thousands |  | 2015 |  | 2014 |  | 2013
Share-based compensation expense included in cost of |  |  |  |  |  |  |  |  |
operating revenues |  | $ | 161 |  | $ | 205 |  | $ | 214
Research and development |  |  | 121 |  |  | 135 |  |  | 233
Sales and marketing |  |  | 523 |  |  | 570 |  |  | 547
General and administrative |  |  | 2,527 |  |  | 3,297 |  |  | 3,579
Share-based compensation expense included in |  |  |  |  |  |  |  |  |
operating expenses |  |  | 3,171 |  |  | 4,002 |  |  | 4,359
Total share-based compensation expense |  |  | 3,332 |  |  | 4,207 |  |  | 4,573
Tax benefit |  |  | (1,263) |  |  | (1,594) |  |  | (1,733)
Share-based compensation expense, net of tax |  | $ | 2,069 |  | $ | 2,613 |  | $ | 2,840
Schedule Of Assumptions Used |
|  |  |  |  |  | Grant Year
Weighted-Average Assumptions |  |  |  |  |  | Fiscal 2015 |  | Fiscal 2014
Risk-free interest rate |  |  |  |  |  |  | 2.0% |  |  | 1.9%
Dividend yield |  |  |  |  |  |  | 1.3% |  |  | 0.7%
Expected life (years) |  |  |  |  |  |  | 7 |  |  | 7
Volatility |  |  |  |  |  |  | 53.6% |  |  | 55.2%
Weighted-average grant-date fair value of options granted | $ | 40.66 |  | $ | 40.40
Summary Of Stock Option Activity |
|  | Number of stock options |  | Average Exercise Price |  | Average Remaining Contractual Term (years) |  | Aggregate Intrinsic Value ('000s)
Stock options outstanding at August 31, 2013 |  | 79,138 |  | $ | 53.06 |  | 6.4 |  | $ | 1,817
Granted |  | 25,394 |  | $ | 76.39 |  |  |  |  |
Exercised |  | (15,590) |  | $ | 29.21 |  |  |  | $ | 853
Forfeitures |  | (2,319) |  | $ | 67.55 |  |  |  |  |
Stock options outstanding at August 31, 2014 |  | 86,623 |  | $ | 63.80 |  | 7.3 |  | $ | 1,211
Granted |  | 25,332 |  | $ | 83.53 |  |  |  |  |
Exercised |  | (9,859) |  | $ | 39.99 |  |  |  | $ | 425
Forfeitures |  | (5,720) |  | $ | 76.91 |  |  |  |  |
Stock options outstanding at August 31, 2015 |  | 96,376 |  | $ | 70.65 |  | 7.3 |  | $ | 710
Exercisable at August 31, 2013 |  | 31,927 |  | $ | 32.70 |  | 3.0 |  | $ | 1,383
Exercisable at August 31, 2014 |  | 30,130 |  | $ | 49.55 |  | 5.3 |  | $ | 851
Exercisable at August 31, 2015 |  | 39,449 |  | $ | 61.47 |  | 6.1 |  | $ | 583
Summary Of Share Based Compensation Additional Information |
|  |  | For the years ended August 31,
$ in thousands |  | 2015 |  | 2014 |  | 2013
Intrinsic value of stock options exercised |  | $ | 425 |  | $ | 853 |  | $ | 4,960
Cash received from stock option exercises |  | $ | 394 |  | $ | 455 |  | $ | 2,036
Tax benefit realized from stock option exercises |  | $ | 158 |  | $ | 317 |  | $ | 1,817
Aggregate grant-date fair value of stock options vested |  | $ | 36.71 |  | $ | 34.89 |  | $ | 31.04
Summary Of Restricted Stock Units |
|  | Number of restricted stock units |  | Weighted-Average Grant-Date Fair Value
Restricted stock units outstanding at August 31, 2013 |  |  | 57,431 |  | $ | 68.06
Granted |  |  | 35,450 |  |  | 76.46
Vested |  |  | (31,204) |  |  | 67.49
Forfeited |  |  | (2,524) |  |  | 70.07
Restricted stock units outstanding at August 31, 2014 |  |  | 59,153 |  | $ | 73.04
Granted |  |  | 34,291 |  |  | 80.94
Vested |  |  | (32,349) |  |  | 72.28
Forfeited |  |  | (4,123) |  |  | 77.55
Restricted stock units outstanding at August 31, 2015 |  |  | 56,972 |  | $ | 78.54
Schedule Of Performance Stock Status |
|  | Number of performance stock units |  | Weighted-Average Grant-Date Fair Value
Performance stock units outstanding at August 31, 2013 |  |  | 52,799 |  | $ | 60.41
Granted |  |  | 13,434 |  |  | 74.84
Vested |  |  | (23,454) |  |  | 55.45
Forfeited |  |  | (2,027) |  |  | 64.57
Performance stock units outstanding at August 31, 2014 |  |  | 40,752 |  | $ | 67.81
Granted |  |  | 12,328 |  |  | 80.33
Vested |  |  | (15,786) |  |  | 57.09
Forfeited |  |  | (3,438) |  |  | 76.44
Performance stock units outstanding at August 31, 2015 |  |  | 33,856 |  | $ | 76.50

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- Definition Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation and net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of share-based compensation plans that may be presented in a single table for outstanding, vested and expected to vest, and exercisable awards. The information that may be disclosed in this table may include, but is not limited to, number of shares, weighted average exercise price, weighted average remaining contractual life, and aggregate intrinsic value. + References No definition available. + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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