Business Segment Information - Summary of Operating Results of Business Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended										12 Months Ended
	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2013		Apr. 30, 2013		Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012
Segment Reporting Information [Line Items]
REVENUES	$ 420,687	$ 403,761	$ 406,423	$ 420,670	$ 412,109	[1]	$ 396,935	[2]	$ 411,456	$ 400,117	$ 1,651,541	$ 1,620,617	$ 1,506,283
Income (loss) from operations	5,813	9,170	7,574	7,283	1,365	[1]	15,687	[2]	5,655	6,684	29,840	29,391	(7,096)
Depreciation and amortization											16,318	14,910	16,648
Impairment of building and improvements												4,359
Operating Segments [Member] | Telecom Platform Services [Member]
Segment Reporting Information [Line Items]
REVENUES											1,615,570	1,588,071	1,477,762
Income (loss) from operations											45,062	48,661	5,910
Depreciation and amortization											13,776	12,342	14,215
Impairment of building and improvements
Operating Segments [Member] | Consumer Phone Services [Member]
Segment Reporting Information [Line Items]
REVENUES											11,023	14,514	19,307
Income (loss) from operations											1,797	1,824	4,062
Depreciation and amortization												1	9
Impairment of building and improvements
Operating Segments [Member] | Zedge [Member]
Segment Reporting Information [Line Items]
REVENUES											6,535	5,811	3,793
Income (loss) from operations											314	340	(248)
Depreciation and amortization											967	798	652
Impairment of building and improvements
Operating Segments [Member] | All Other [Member]
Segment Reporting Information [Line Items]
REVENUES											18,413	12,221	5,421
Income (loss) from operations											(2,049)	(7,433)	(3,668)
Depreciation and amortization											1,545	1,673	1,512
Impairment of building and improvements												4,359
Operating Segments [Member] | Corporate [Member]
Segment Reporting Information [Line Items]
REVENUES
Income (loss) from operations											(15,284)	(14,001)	(13,152)
Depreciation and amortization											30	96	260
Impairment of building and improvements

[1] Included in income from operations was a charge for impairment of building and improvements of $4.4 million.

[2] Included in income from operations was other operating gains of $9.6 million related to legal matters