Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Schedule of Property and Equipment (Details)

v3.7.0.1
Summary of Significant Accounting Policies - Schedule of Property and Equipment (Details) - USD ($)
$ in Thousands
Apr. 30, 2017
Apr. 30, 2016
Property, Plant and Equipment [Line Items]    
Total Property and Equipment $ 1,110 $ 1,110
Accumulated depreciation and amortization (1,094) (1,059)
Net property and equipment 16 51
Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Total Property and Equipment 502 502
Leasehold Improvement [Member]    
Property, Plant and Equipment [Line Items]    
Total Property and Equipment $ 608 $ 608