CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jul. 31, 2016	Jul. 31, 2015
CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowance for doubtful accounts (in dollars)	$ 1,850	$ 2,092
Preferred Stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred Stock, authorized shares	1,000,000	1,000,000
Preferred Stock, shares issued	0	0
Common Stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common Stock, authorized shares	75,000,000	75,000,000
Common Stock, shares issued	46,084,047	45,913,154
Common Stock, shares outstanding	41,708,214	41,604,359
Treasury Stock, shares	4,375,833	4,308,795