Contingent Liabilities (Schedule Of Changes In Holdback And Earn-Out Payable) (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2015	Oct. 31, 2014	Jul. 31, 2015
Contingent Liabilities [Abstract]
Beginning balance	$ 1,116	$ 448
Additions		761
Adjustments	(62)
Payments	(186)	(292)
Imputed interest recognized	8	9
Loss on change in fair value of earn-out	8
Ending balance	884	926
Less current portion	(639)	(165)	$ (754)
Ending balance, long-term	$ 245	$ 761	$ 362