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Note 5 - Derivative Instruments and Hedging Activities (Details Textual) - USD ($) $ in Millions | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020 | May 31, 2020
Interest Rate Swap [Member] |  |  |
Derivative, Notional Amount | $ 70.0 | $ 70.0 | $ 70.0
Forward Contracts [Member] |  |  |
Derivative, Notional Amount | 20.9 | 31.8 |
Forward Contracts [Member] | Designated as Hedging Instrument [Member] |  |  |
Derivative, Notional Amount | $ 20.9 | $ 26.8 |
Forward Contracts [Member] | Minimum [Member] |  |  |
Derivative, Term of Contract (Month) | 1 month |  |
Forward Contracts [Member] | Maximum [Member] |  |  |
Derivative, Term of Contract (Month) | 18 months |  |

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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=125515794&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=125515794&loc=SL5579245-113959 + Details
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- Definition Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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