Income Taxes (Details 2) - USD ($) $ in Thousands	3 Months Ended											12 Months Ended
	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Oct. 31, 2013	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2014
Schedule of differences between income taxes expected at the federal statutory income tax rate and income taxes provided
Federal income tax at statutory rate												$ (2,939)	$ (262)	$ 99
Permanent differences												2	1,048
Valuation allowance												3,394	(3,500)	2,250
Other												3
State and local income tax, net of federal benefit												(456)		4
PROVISION FOR (INCOME TAXES) INCOME TAX BENEFITS	$ (15)	$ 25		$ (6)	$ (2,660)	$ 801	$ (100)	$ (755)	$ 2,393	$ (40)		$ (4)	$ 2,714	$ (2,353)