Note 8 - Intangible Assets (Details) - USD ($) |
1 Months Ended | 12 Months Ended | |
|---|---|---|---|
Apr. 30, 2015 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Goodwill and Intangible Assets Disclosure [Abstract] | |||
| Payments to Acquire Intangible Assets | $ 1,408,000 | $ 1,408,000 | |
| Intangible Assets, Net (Excluding Goodwill) | 1,408,000 | $ 0 | |
| Impairment of Intangible Assets (Excluding Goodwill) | $ 0 | $ 0 | |