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Note 15 - Financial Derivatives - Cash Flow Swap Hedges (Details) - Interest Rate Swap [Member] - Cash Flow Hedging [Member] - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Notional |  | $ 119,136 |  | $ 119,136
Weighted average fixed rate-pay |  | 2.61% |  | 2.61%
Weighted average variable rate-receive |  | 0.19% |  | 0.44%
Unrealized loss, net of taxes | [1] | $ (5,627) |  | $ (6,890)
Periodic net settlement of swaps | [2] | $ 711 | $ 255 |
[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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- Definition Amount, after tax and before reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580 + Details
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