Business Segment Information (Details 1) (USD $) In Thousands, unless otherwise specified	Jan. 31, 2014	Jul. 31, 2013
Summary of total assets for the business segments
Total assets:	$ 20,407	$ 15,739
Straight Path Spectrum [Member]
Summary of total assets for the business segments
Total assets:	6,037	3,642
Straight Path IP [Member]
Summary of total assets for the business segments
Total assets:	$ 14,370	$ 12,097