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Revenue by geographic location (Details) (USD $)
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3 Months Ended | |
|---|---|---|
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Jul. 31, 2012
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Jul. 31, 2011
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| Revenues by geographic location | $ 7,998,485 | $ 10,269,806 |
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United States
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| Revenues by geographic location | 5,975,204 | 8,694,578 |
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Europe
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| Revenues by geographic location | 1,321,922 | 1,199,293 |
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Other (principally Asia Pacific Region)
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||
| Revenues by geographic location | $ 701,359 | $ 375,935 |
| X | ||||||||||
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- Definition
Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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