Contingent Liabilities (Schedule Of Changes In Holdback And Earn-Out Payable) (Details) - USD ($) $ in Thousands	9 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Jul. 31, 2015
Contingent Liabilities [Abstract]
Beginning balance	$ 1,116	$ 448
Additions		$ 911
Adjustments	$ (62)
Payments	(565)	$ (292)
Imputed interest recognized	22	$ 37
Gain on change in fair value of earn-out	(5)
Ending balance	506	$ 1,104
Less current portion	(382)	(627)	$ (754)
Ending balance, long-term	$ 124	$ 477	$ 362