Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Schedule of Inventories (Details)

v3.7.0.1
Summary of Significant Accounting Policies - Schedule of Inventories (Details) - USD ($)
$ in Thousands
Apr. 30, 2017
Apr. 30, 2016
Accounting Policies [Abstract]    
Raw materials $ 811 $ 955
Work in progress 20 5
Finished goods 204 566
Allowance for excess and slow moving inventory (90) (190)
Inventories, net $ 945 $ 1,336