|
Note 8 - Segment Reporting (Details) - Total Revenues by Products and Services (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Jan. 31, 2014
|
Jan. 31, 2013
|
Jan. 31, 2014
|
Jan. 31, 2013
|
|
| Revenue from External Customer [Line Items] | ||||
| Total sales by products and services | $ 7,683 | $ 7,458 | $ 21,787 | $ 17,853 |
|
Original Equipment Manufactures [Member]
|
||||
| Revenue from External Customer [Line Items] | ||||
| Total sales by products and services | 2,984 | 4,382 | 10,757 | 9,800 |
|
Remote Monitoring Solutions [Member]
|
||||
| Revenue from External Customer [Line Items] | ||||
| Total sales by products and services | 3,926 | 1,357 | 8,260 | 4,208 |
|
Industrial Data Communications [Member]
|
||||
| Revenue from External Customer [Line Items] | ||||
| Total sales by products and services | 333 | 113 | 829 | 624 |
|
Mobile Data Acquisition [Member]
|
||||
| Revenue from External Customer [Line Items] | ||||
| Total sales by products and services | 265 | 1,484 | 1,439 | 2,765 |
|
OEM Related Services [Member]
|
||||
| Revenue from External Customer [Line Items] | ||||
| Total sales by products and services | 48 | 42 | 173 | 168 |
|
Proprietary Product Related Services [Member]
|
||||
| Revenue from External Customer [Line Items] | ||||
| Total sales by products and services | $ 127 | $ 80 | $ 329 | $ 287 |