Note 10. Common Stock and Earnings Per Share (Tables)

6 Months Ended

Feb. 29, 2012

Schedule of Stock by Class [Table Text Block]

	Six Months Ended
	Feb 29, 2012			Feb 28, 2011
Balance at September 1		45,055			46,024
Common stock issued for employee stock plans		364			925
Repurchase of common stock		(658	)		(809	)
Balance at February 29, 2012 and February 28, 2011, respectively		44,761			46,140

Schedule of Weighted Average Number of Shares [Table Text Block]

	Net Income (Numerator)		Weighted Average Common Shares (Denominator)		Per Share Amount
For the three months ended February 29, 2012
Basic EPS
Income available to common stockholders	$	46,746		44,880	$	1.04
Diluted EPS
Dilutive effect of stock options and restricted stock				827
Income available to common stockholders plus assumed conversions	$	46,746		45,707	$	1.02
For the three months ended February 28, 2011
Basic EPS
Income available to common stockholders	$	45,254		46,226	$	0.98
Diluted EPS
Dilutive effect of stock options and restricted stock				1,201
Income available to common stockholders plus assumed conversions	$	45,254		47,427	$	0.95
For the six months ended February 29, 2012
Basic EPS
Income available to common stockholders	$	92,290		44,993	$	2.05
Diluted EPS
Dilutive effect of stock options and restricted stock				979
Income available to common stockholders plus assumed conversions	$	92,290		45,972	$	2.01
For the six months ended February 28, 2011
Basic EPS
Income available to common stockholders	$	86,855		46,244	$	1.88
Diluted EPS
Dilutive effect of stock options and restricted stock				1,251
Income available to common stockholders plus assumed conversions	$	86,855		47,495	$	1.83