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 |