Segment Information (Details 1) $ in Thousands	3 Months Ended
	Oct. 31, 2016 USD ($) country	Oct. 31, 2015 USD ($) country
Revenues :
Total revenues	$ 94,127	$ 82,280
Entity-wide revenue attributable to other country | country	0	0
EntityWideRevenueMajorCountryPercentage	10.00%	10.00%
United States
Revenues :
Total revenues	$ 46,849	$ 43,107
Canada
Revenues :
Total revenues	14,494	9,058
United Kingdom
Revenues :
Total revenues	8,390	9,687
Other EMEA
Revenues :
Total revenues	8,941	6,875
Other
Revenues :
Total revenues	5,224	2,449
Americas
Revenues :
Total revenues	66,567	54,614
EMEA
Revenues :
Total revenues	17,331	16,562
APAC
Revenues :
Total revenues	$ 10,229	$ 11,104