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Note 14 - Financial Derivatives - Cash Flow Swap Hedges (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Unrealized loss, net of taxes |  | $ 3,614 | $ (3,478) | $ (3,171)
Interest Rate Swap [Member] |  |  |  |
Notional |  | 324,800 |  |
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] |  |  |  |
Notional |  | $ 119,136 | $ 119,136 |
Weighted average fixed rate-pay |  | 2.61% | 2.61% |
Weighted average variable rate-receive |  | 0.16% | 0.44% |
Unrealized loss, net of taxes | [1] | $ (3,276) | $ (6,890) |
Periodic net settlement of swaps | [2] | $ 2,949 | $ 2,193 |
[1] | Included in other comprehensive income.
[2] | the amount of periodic net settlement of interest rate swaps was included in interest expense.

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