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

3 Months Ended

Nov. 30, 2014

Earnings Per Share [Abstract]

Schedule of Stock by Class [Table Text Block]

	Three Months Ended November 30,
	2014			2013
Balance at September 1		41,793			43,324
Common stock issued for employee stock plans		183			215
Repurchase of common stock from employees*		(17	)		(21	)
Repurchase of common stock under the share repurchase program		(380	)		(530	)
Balance at November 30, 2014 and 2013, respectively		41,579			42,988

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 November 30, 2014
Basic EPS
Income available to common stockholders	$	55,860		41,683	$	1.34
Diluted EPS
Dilutive effect of stock options and restricted stock				657
Income available to common stockholders plus assumed conversions	$	55,860		42,340	$	1.32
For the three months ended November 30, 2013
Basic EPS
Income available to common stockholders	$	52,178		43,134	$	1.21
Diluted EPS
Dilutive effect of stock options and restricted stock				639
Income available to common stockholders plus assumed conversions	$	52,178		43,773	$	1.19