Summary of Significant Accounting Policies (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Cash	$ 11	$ 87	$ 40
Advertising and promotional costs	0	0
Warranty costs	$ 0	$ 0
Exer-Rest Products [Member] | U.S. [Member]
Product warranties period	2 years
Exer-Rest Products [Member] | Outside U.S. [Member]
Product warranties period	1 year
Minimum [Member]
Income tax examination year under examination	2013
Maximum [Member]
Income tax examination year under examination	2017