Business Segment Information (Details 1) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2014	Jul. 31, 2013
Summary of total assets for the business segments
Total assets:	$ 26,415	$ 15,739
Straight Path Spectrum [Member]
Summary of total assets for the business segments
Total assets:	5,059	3,642
Straight Path IP [Member]
Summary of total assets for the business segments
Total assets:	$ 21,356	$ 12,097