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SPECIAL CHARGES Narrative (Details) (USD $)	12 Months Ended
SPECIAL CHARGES Narrative (Details) (USD $)	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2010
Capacity Rationalization Charges
Charges recognized in year	$ 1,623,000	$ 0	$ 0
Estimated expense in fiscal 2013	57,000
Asset write-off
Capacity Rationalization Charges
Charges recognized in year	1,187,000
Severance and Other Employee Related Costs
Capacity Rationalization Charges
Charges recognized in year	$ 436,000

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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