Income Taxes (Summary of Unrecognized Tax Benefits) (Details) (USD $)	12 Months Ended
Jul. 31, 2013	Jul. 31, 2012
Activity Related to Unrecognized Tax Benefits [Roll Forward]
Beginning Balance	$ 2,529,000	$ 6,763,000
Increase related to current period	585,000	432,000
Increase related to prior periods	175,000	417,000
Expiration of statute of limitations	(207,000)	(1,401,000)
Decrease related to prior periods	(209,000)	(3,309,000)
Settlements with taxing authorities	0	(373,000)
Ending Balance	$ 2,873,000	$ 2,529,000

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The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

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The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns.

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The gross amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities.

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The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns.

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