Income Taxes (Summary of Unrecognized Tax Benefits) (Details) (USD $)	12 Months Ended
Jul. 31, 2014	Jul. 31, 2013
Activity Related to Unrecognized Tax Benefits [Roll Forward]
Beginning Balance	$ 2,873,000	$ 2,529,000
Increase related to current period	374,000	585,000
Increase related to prior periods	20,000	175,000
Expiration of statute of limitations	(496,000)	(207,000)
Decrease related to prior periods	(68,000)	(209,000)
Ending Balance	$ 2,703,000	$ 2,873,000

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ References

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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