Income Taxes (Details) - USD ($)	Apr. 30, 2016	Jul. 31, 2015
Income Tax Contingency [Line Items]
Unrecognized tax benefits	$ 8,811,000	$ 2,796,000
Interest accrued relating to income taxes	59,000	68,000
Unrecognized tax benefits that would positively impact our effective tax rate, if recognized	7,974,000	2,138,000
An offset to the non-current deferred tax assets
Income Tax Contingency [Line Items]
Unrecognized tax benefits	5,549,000	1,223,000
Noncurrent Income Taxes Payable
Income Tax Contingency [Line Items]
Unrecognized tax benefits	$ 3,262,000	$ 1,573,000