Business Segment Information - Summary of Operating Results of Business Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Segment Reporting Information [Line Items]
Revenues	$ 403,761	$ 396,935	$ 1,230,855	$ 1,208,509
Income (loss) from operations	9,170	15,687	24,027	28,025
Corporate [Member]
Segment Reporting Information [Line Items]
Revenues
Income (loss) from operations	(3,282)	(3,374)	(11,765)	(10,581)
Operating Segments [Member] | Telecom Platform Services [Member]
Segment Reporting Information [Line Items]
Revenues	394,568	389,048	1,205,490	1,184,079
Income (loss) from operations	12,378	19,593	36,676	38,542
Operating Segments [Member] | Consumer Phone Services [Member]
Segment Reporting Information [Line Items]
Revenues	2,625	3,427	8,491	11,156
Income (loss) from operations	517	341	1,358	1,377
Operating Segments [Member] | Zedge [Member]
Segment Reporting Information [Line Items]
Revenues	1,630	1,413	4,795	4,193
Income (loss) from operations	(76)	68	238	185
Operating Segments [Member] | All Other [Member]
Segment Reporting Information [Line Items]
Revenues	4,938	3,047	12,079	9,081
Income (loss) from operations	$ (367)	$ (941)	$ (2,480)	$ (1,498)