Note 11 - Common Stock and Earnings Per Share (Tables)

9 Months Ended

May 31, 2014

Earnings Per Share [Abstract]

Schedule of Stock by Class [Table Text Block]

	Nine Months Ended May 31,
	2014			2013
Balance at September 1		43,324			44,279
Common stock issued for employee stock plans		562			1,775
Repurchase of common stock		(1,870	)		(2,016	)
Balance at May 31, 2014 and 2013, respectively		42,016			44,038

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

			Weighted
	Net Income		Average Common Shares		Per Share
	(Numerator)		(Denominator)		Amount
For the three months ended May 31, 2014
Basic EPS
Income available to common stockholders	$	51,532		42,166	$	1.22
Diluted EPS
Dilutive effect of stock options and restricted stock				449
Income available to common stockholders plus assumed conversions	$	51,532		42,615	$	1.21
For the three months ended May 31, 2013
Basic EPS
Income available to common stockholders	$	53,367		43,954	$	1.21
Diluted EPS
Dilutive effect of stock options and restricted stock				531
Income available to common stockholders plus assumed conversions	$	53,367		44,485	$	1.20
For the nine months ended May 31, 2014
Basic EPS
Income available to common stockholders	$	156,136		42,615	$	3.66
Diluted EPS
Dilutive effect of stock options and restricted stock				555
Income available to common stockholders plus assumed conversions	$	156,136		43,170	$	3.62
For the nine months ended May 31, 2013
Basic EPS
Income available to common stockholders	$	147,674		44,028	$	3.35
Diluted EPS
Dilutive effect of stock options and restricted stock				756
Income available to common stockholders plus assumed conversions	$	147,674		44,784	$	3.30