Business Segment Information (Details 1) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2014	Jul. 31, 2014
Summary of total assets for the business segments
Total assets:	$ 29,131	$ 30,439
Straight Path Spectrum [Member]
Summary of total assets for the business segments
Total assets:	5,399	5,586
Straight Path IP [Member]
Summary of total assets for the business segments
Total assets:	$ 23,732	$ 24,853