Income Taxes (Details) (USD $)	9 Months Ended
	Apr. 30, 2014	Jul. 31, 2013
Income Tax Disclosure [Abstract]
Effective income tax rate, continuing operations, excluding discrete adjustments	36.50%
Unrecognized tax benefits	$ 2,886,000	$ 2,963,000
Interest accrued relating to income taxes	90,000	90,000
Unrecognized tax benefits that would positively impact our effective tax rate, if recognized	$ 2,200,000	$ 2,348,000