Income Taxes (Details) (USD $)	9 Months Ended
	Apr. 30, 2015	Jul. 31, 2014
Income Tax Disclosure [Abstract]
Effective income tax rate, continuing operations, excluding discrete adjustments	34.75%
Unrecognized tax benefits	$ 2,873,000	$ 2,743,000
Interest accrued relating to income taxes	64,000	40,000
Total unrecognized tax benefits recorded as non-current income taxes payable	1,778,000	2,743,000
Unrecognized tax benefits that would positively impact our effective tax rate, if recognized	2,182,000	2,152,000
Accounting Standards Update 2013-11 | Deferred Tax Liability Noncurrent
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New accounting pronouncement, effect of adoption, quantification	$ 1,095,000