Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Current:
Federal										$ 21	$ 560
State and local									$ (34)	6	113
Total									(34)	27	673
Deferred:
Federal									(2,211)	1,925	(560)
State and local									(469)	401	$ (121)
Total									2,809	(2,809)
(PROVISION FOR) BENEFIT FROM INCOME TAXES	$ 2,660	$ 801	$ (100)	$ (755)	$ 2,393	$ (40)			$ 2,714	$ (2,353)	$ 8