Inventories (Details) - USD ($) |
Jul. 31, 2015 |
Apr. 30, 2015 |
|---|---|---|
| Inventory Disclosure [Abstract] | ||
| Raw materials | $ 941,000 | $ 911,000 |
| Work in process | 49,000 | 2,000 |
| Finished goods | 875,000 | 1,176,000 |
| Inventories | $ 1,865,156 | $ 2,088,737 |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|