Other Operating Losses, Net (Details) - USD ($) $ in Thousands	12 Months Ended
Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Summary of other operating expenses
Corporate -loss related to legal settlement and mutual release	$ (10,436)
Telecom Platform Services- loss on disposal of property, plant and equipment		(326)
Corporate-gain (losses) related to legal matters	24		(1,552)
TOTAL	$ (10,412)	$ (326)	$ (1,552)

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration