Annual report pursuant to Section 13 and 15(d)

Revenue by geographic location (Details)

v2.4.0.8
Revenue by geographic location (Details) (USD $)
12 Months Ended
Apr. 30, 2013
Apr. 30, 2012
Apr. 30, 2011
Revenues $ 27,616,000 $ 36,079,000 $ 46,847,000
Total assets 8,165,000 11,430,000 14,820,000
Long lived assets 1,697,000 2,503,000 4,256,000
United States
     
Revenues 21,702,000 27,980,000 37,400,000
Total assets 8,153,000 11,373,000 14,783,000
Long lived assets 1,697,000 2,503,000 4,256,000
Europe
     
Revenues 3,983,000 5,393,000 6,481,000
Total assets 12,000 54,000 37,000
Long lived assets 0 0 0
Other
     
Revenues 1,931,000 [1] 2,706,000 [1] 2,966,000 [1]
Total assets 0 [1] 3,000 [1] 0 [1]
Long lived assets $ 0 [1] $ 0 [1] $ 0 [1]
[1] Principally Asia Pacific Region