Business Combinations (Schedule Of Pro Forma Adjustments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jan. 31, 2013	Jan. 31, 2013
Business Combinations [Abstract]
Amortization of internally developed technology	$ 9	$ 35
Amortization of intangible assets	17	67
Acquisition-related professional fees		(790)
Interest expense	43	172
Income tax benefit	$ (110)	$ (438)

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Business Acquisition, Pro Forma Adjustment, Amortization Of Intangible Assets

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Business Acquisition, Pro Forma Adjustment, Interest ExpenseBusiness Acquisition, Pro Forma Adjustment, Income Tax Expense (Benefit)

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