EARNINGS PER SHARE (Tables)

12 Months Ended

Aug. 31, 2017

EARNINGS PER SHARE [Abstract]

Schedule of the Computation of Net Income Per Share

	Years Ended August 31,
	2017		2016		2015
Net income	$	90,724	$	88,723	$	89,124
Less: Allocation of income to unvested stockholders		(1,321)		(1,431)		(1,137)
Net earnings available to common stockholders	$	89,403	$	87,292	$	87,987
Basic weighted average shares outstanding		30,020		29,928		29,848
Add dilutive effect of stock options (two-class method)		3		5		7
Diluted average shares outstanding		30,023		29,933		29,855
Basic net income per share	$	2.98	$	2.92	$	2.95
Diluted net income per share	$	2.98	$	2.92	$	2.95