Revenue by geographic location (Details) (USD $)
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12 Months Ended | |||||||
---|---|---|---|---|---|---|---|---|
Apr. 30, 2013
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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] | ||
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