CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jul. 31, 2013	Jul. 31, 2012
CONSOLIDATED BALANCE SHEETS
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, shares authorized	150,000	150,000
Common stock, shares issued	54,732	54,732
Common stock, shares outstanding	32,639	32,220
Treasury stock, shares	22,093	22,512