Annual report pursuant to Section 13 and 15(d)

Revenue by Geographic Location (Details)

v3.5.0.2
Revenue by Geographic Location (Details) - USD ($)
 12 Months Ended
Apr. 30, 2016
Apr. 30, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues $ 25,182,000 $ 28,258,000
Total assets 5,751,000 6,275,000
Long lived assets   1,498,000
United States    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues 19,713,000 23,285,000
Total assets 5,743,000 6,269,000
Long lived assets 1,490,000 1,498,000
Europe    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues 4,405,000 3,785,000
Total assets 8,000 6,000
Long lived assets 0 0
Other    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues [1] 1,064,000 1,188,000
Total assets [1] 0 0
Long lived assets [1] $ 0 $ 0
[1] Principally Asia Pacific Region