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Note 14 - Financial Derivatives - Fair Value Swap Hedges (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Net unrealized loss |  | $ (3,478) | $ (3,171) | $ 1,525
Periodic net settlement of SWAPs | [1] | (7,719) | 996 |
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] |  |  |  |
Derivative, Notional Amount |  | $ 478,266 | $ 579,584 |
Weighted average fixed rate-pay |  | 4.56% | 4.71% |
Weighted average variable rate-receive |  | 3.11% | 4.87% |
Net unrealized loss | [2] | $ (15,082) | $ (7,205) |
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |
Weighted average variable rate spread |  | 2.46% | 2.62% |
[1] | the amount of periodic net settlement of interest rate swaps was included in interest income.
[2] | the amount is included in other non-interest income.

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- Definition The amount of income for periodic net settlements on interest rate swaps. + References No definition available. + Details
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- Definition Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=121577467&loc=d3e76258-113986 + Details
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- Definition The average percentage points added to the reference rate to compute the variable rate on the group of interest rate derivatives. + References No definition available. + Details
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- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959 + Details
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