STOCK BASED COMPENSATION (Summary of Components of Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2016	May 31, 2015	May 31, 2016	May 31, 2015
STOCK BASED COMPENSATION [Abstract]
Options granted to directors	$ 20	$ 25	$ 53	$ 61
Restricted stock awards	1,618	929	5,295	3,633
Restricted stock units	515	328	1,383	928
Stock-based compensation expense	$ 2,153	$ 1,282	$ 6,731	$ 4,622