Shared Based Compensation (Tables)

12 Months Ended

Aug. 31, 2013

Share Based Compensation [Abstract]

Schedule Of Assumptions Used

	Grant Year
Weighted-Average Assumptions	Fiscal 2013		Fiscal 2012
Risk-free interest rate		1.2%		1.7%
Dividend yield		0.6%		0.6%
Expected life (years)		7		7
Volatility		56.3%		55.9%
Weighted-average grant-date fair value of options granted	$	40.09	$	31.04

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, 2011	136,575	$	23.17	3.1	$	5,331
Granted	36,294	$	58.10
Exercised	(23,588)	$	24.10		$	971
Forfeitures	(2,983)	$	58.10
Stock options outstanding at August 31, 2012	146,298	$	30.97	3.9	$	5,031
Granted	24,684	$	75.68
Exercised	(89,390)	$	22.77		$	4,960
Forfeitures	(2,454)	$	67.03
Stock options outstanding at August 31, 2013	79,138	$	53.06	6.4	$	1,817

Exercisable at August 31, 2011	136,575	$	23.17	3.1	$	5,331
Exercisable at August 31, 2012	112,987	$	22.97	2.4	$	4,789
Exercisable at August 31, 2013	31,927	$	32.70	3.0	$	1,383

Summary Of Share Based Compensation Additional Information

		For the years ended August 31,
$ in thousands	2013		2012		2011
Intrinsic value of stock options exercised	$	4,960	$	971	$	7,001
Cash received from stock option exercises	$	2,036	$	567	$	3,579
Tax benefit realized from stock option exercises	$	1,817	$	368	$	2,628
Aggregate grant-date fair value of stock options vested	$	31.04	$	N/A	$	8.13

Summary Of Restricted Stock Units

	Number of restricted stock units		Weighted-Average Grant-Date Fair Value
Restricted stock units outstanding at August 31, 2011		71,826	$	47.99
Granted		40,212		58.27
Vested		(37,381)		47.87
Forfeited		(7,122)		51.16
Restricted stock units outstanding at August 31, 2012		67,535	$	54.35
Granted		30,551		77.46
Vested		(37,534)		51.82
Forfeited		(3,121)		65.52
Restricted stock units outstanding at August 31, 2013		57,431	$	68.06

Schedule Of Performance Stock Status

	Number of performance stock units		Weighted-Average Grant-Date Fair Value
Performance stock units outstanding at August 31, 2011		98,625	$	42.21
Granted		19,386		57.09
Forfeited		(38,987)		43.30
Performance stock units outstanding at August 31, 2012		79,024	$	45.32
Granted		13,072		74.31
Vested		(36,634)		32.81
Forfeited		(2,663)		60.65
Performance stock units outstanding at August 31, 2013		52,799	$	60.41

Schedule Of Share-Based Compensation Expense

		For the years ended August 31,
$ in thousands	2013		2012		2011
Share-based compensation expense included in cost of
operating revenues	$	214	$	225	$	157
Research and development		233		189		120
Sales and marketing		547		524		574
General and administrative		3,579		3,001		2,623
Share-based compensation expense included in
operating expenses		4,359		3,714		3,317
Total share-based compensation expense		4,573		3,939		3,474
Tax benefit		(1,733)		(1,493)		(1,317)
Share-based compensation expense, net of tax	$	2,840	$	2,446	$	2,157