Note 6 - Property and Equipment - Property, Plant, and Equipment Useful Life (Details) (Parentheticals) - Minimum [Member] |
12 Months Ended | |
|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Estimated Useful Life (Year) | 3 years | |
| Machinery and Equipment [Member] | ||
| Estimated Useful Life (Year) | 5 years | 7 years |
| Furniture and Fixtures [Member] | ||
| Estimated Useful Life (Year) | 3 years | 5 years |
| Leasehold Improvements [Member] | ||
| Estimated Useful Life (Year) | 5 years | 7 years |