Goodwill and Other Intangibles - Schedule of Change in Carrying Amount of Goodwill by Operating Segment (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2014	Jul. 31, 2013
Indefinite-lived Intangible Assets [Line Items]
Beginning balance	$ 14,807	$ 14,614
Foreign currency translation adjustments	23	193
Ending balance	14,830	14,807
Telecom Platform Services [Member]
Indefinite-lived Intangible Assets [Line Items]
Beginning balance	11,600	11,407
Foreign currency translation adjustments	23	193
Ending balance	11,623	11,600
Zedge [Member]
Indefinite-lived Intangible Assets [Line Items]
Beginning balance	3,207	3,207
Foreign currency translation adjustments
Ending balance	$ 3,207	$ 3,207