|
Financial Information by Geographic Location (Details) (USD $)
|
3 Months Ended | |
|---|---|---|
|
Jul. 31, 2014
|
Jul. 31, 2013
|
|
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Revenues by geographic location | $ 7,725,037 | $ 7,366,730 |
|
United States
|
||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Revenues by geographic location | 6,630,728 | 6,182,801 |
|
Europe
|
||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Revenues by geographic location | 938,767 | 870,627 |
|
Other (principally Asia Pacific Region)
|
||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Revenues by geographic location | $ 155,542 | $ 313,302 |