Note 2 - Summary of Significant Accounting Policies - Property, Plant and Equipment Useful Life (Details) |
12 Months Ended |
|---|---|
Dec. 31, 2016 | |
| Building and Building Improvements [Member] | Minimum [Member] | |
| Buildings and improvements (years) (Year) | 10 years |
| Building and Building Improvements [Member] | Maximum [Member] | |
| Buildings and improvements (years) (Year) | 40 years |
| Furniture and Fixtures [Member] | Minimum [Member] | |
| Buildings and improvements (years) (Year) | 3 years |
| Furniture and Fixtures [Member] | Maximum [Member] | |
| Buildings and improvements (years) (Year) | 15 years |
| Leasehold Improvements [Member] | Minimum [Member] | |
| Buildings and improvements (years) (Year) | 2 years |
| Leasehold Improvements [Member] | Maximum [Member] | |
| Buildings and improvements (years) (Year) | 39 years |