Financial Information by Geographic Location (Details) - USD ($) |
3 Months Ended | 9 Months Ended | ||
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Jan. 31, 2016 |
Jan. 31, 2015 |
Jan. 31, 2016 |
Jan. 31, 2015 |
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Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
Revenues by geographic location | $ 6,603,463 | $ 8,050,557 | $ 19,991,917 | $ 22,655,310 |
United States | ||||
Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
Revenues by geographic location | 5,039,000 | 6,914,000 | 16,260,000 | 19,243,000 |
Europe | ||||
Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
Revenues by geographic location | 1,396,000 | 1,018,000 | 3,391,000 | 3,016,000 |
Other (principally Asia Pacific Region) | ||||
Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
Revenues by geographic location | $ 168,000 | $ 119,000 | $ 341,000 | $ 396,000 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Aggregate revenue during the period from sale of goods in the normal course of business, before deducting returns, allowances and discounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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