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Note 16 - Financial Derivatives (Details Textual) - USD ($) $ in Thousands |  | 3 Months Ended |
--- | --- | --- | ---
May 31, 2014 | Mar. 31, 2020 | Dec. 31, 2019
Junior Subordinated Notes, Total | $ 119,100 |  |
Cash [Member] |  |  |
Collateral Already Posted, Aggregate Fair Value |  | $ 13,400 | $ 7,100
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] |  |  |
Derivative Outstanding, Notional Amount | $ 119,100 |  |
Derivative Original Maturity (Year) | 10 years |  |
Derivative, Notional Amount |  | 119,136 | 119,136
Interest Rate Swap [Member] | Fair Value Hedging [Member] | Designated as Hedging Instrument [Member] |  |  |
Derivative Outstanding, Notional Amount |  | $ 561,900 |
Derivative Original Maturity (Year) |  | 10 years |
Derivative, Notional Amount |  | $ 561,854 | $ 579,584
Interest Rate Swap [Member] | Fair Value Hedging [Member] | Designated as Hedging Instrument [Member] | Minimum [Member] |  |  |
Derivative Original Maturity (Year) |  | 3 years |
Loans Receivable with Partial-term Hedging Designation [Member] |  |  |
Loans and Leases Receivable, Gross, Total |  | $ 25,000 |
Derivative, Notional Amount |  | 45,200 |
Hedged Asset, Fair Value Hedge, Last-of-Layer, Amount |  | 25,000 |
Hedged Asset, Fair Value Hedge, Last-of-Layer, Cumulative Increase (Decrease) |  | $ 245 |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References No definition available. + Details
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- Definition Outstanding notional amount specified by the derivative(s). Expressed as an absolute value. + References No definition available. + Details
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- Definition The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624258-113959 + Details
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Junior Subordinated Notes, which have a lower priority than senior instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)(a)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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