|
Note 3 - Investments (Details) (USD $)
In Thousands, unless otherwise specified
|
Dec. 31, 2014
|
Dec. 31, 2013
|
| Note 3 - Investments (Details) [Line Items] |
|
|
| Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions |
22 |
|
| Minority Interest in Early Stage Private Company [Member] | Maximum [Member] |
|
|
| Note 3 - Investments (Details) [Line Items] |
|
|
| Noncontrolling Interest, Ownership Percentage by Parent |
|
10.00% |
| Minority Interest in Early Stage Private Company [Member] |
|
|
| Note 3 - Investments (Details) [Line Items] |
|
|
| Cost Method Investments, Original Cost |
$ 5,000 |
$ 2,621 |