|
Note 4 - Inventory (Details) - Inventories (USD $)
In Thousands, unless otherwise specified |
Jan. 31, 2014
|
Apr. 30, 2013
|
|---|---|---|
| Inventories [Abstract] | ||
| Raw material | $ 3,838 | $ 3,077 |
| Work-in-process | 1,612 | 1,409 |
| Finished goods | 2,992 | 2,434 |
| 8,442 | 6,920 | |
| Reserves | (602) | (682) |
| $ 7,840 | $ 6,238 |