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Note 16 - Related Party Transactions (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Note 16 - Related Party Transactions (Details) [Line Items] |  |  |
Related Party Transaction, Expenses from Transactions with Related Party | $ 1,600 | $ 1,300 | $ 822
Director [Member] | Interest [Member] |  |  |
Note 16 - Related Party Transactions (Details) [Line Items] |  |  |
Related Party Transaction, Expenses from Transactions with Related Party | $ 427 |  |
Limited Liability Company A [Member] |  |  |
Note 16 - Related Party Transactions (Details) [Line Items] |  |  |
Ownership Interest In Trust | 85.00% |  |
Limited Liability Company B [Member] |  |  |
Note 16 - Related Party Transactions (Details) [Line Items] |  |  |
Ownership Interest In Trust | 51.00% |  |
Mr Rogers [Member] |  |  |
Note 16 - Related Party Transactions (Details) [Line Items] |  |  |
Related Party Transaction, Amounts of Transaction | $ 1,100 |  |

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