Concentration of Customers (Tables)

3 Months Ended

Oct. 31, 2016

Concentration of Customers [Abstract]

Schedule of revenues from transactions with single customer

	Three Months Ended October 31,
	2016		2015
	(in thousands)
Customer 1	$	48	$	41
Customer 2		41		21
Customer 3		21		15
Customer 4		16		*

* below 10%