Income Taxes (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2014
Current:
Federal	$ (83)		$ (279)
State and local	(30)
Foreign	(185)	(311)	(1,177)
Current Income Tax Expense Benefit	(298)	(311)	(1,456)
Deferred:
Federal	(3,148)	(1,967)	(6,461)
State and local	(51)	(245)	(175)
Foreign	(613)	(3,565)	4,110
Deferred Income Tax Expense Benefit	(3,812)	(5,777)	(2,526)
Provision for income taxes	$ (4,110)	$ (6,088)	$ (3,982)