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Income Taxes (Details 3) - USD ($) $ in Thousands	Jul. 31, 2017	Jul. 31, 2016
Deferred tax assets:
Net operating loss carryforwards	$ 951	$ 305
Reserves and accruals	377	352
Stock-based compensation	76	1
Gross deferred tax assets	1,404	658
Less valuation allowance	(1,232)	(515)
Total deferred tax assets	172	143
Total deferred tax liabilities
Deferred tax assets, net	$ 172	$ 143

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