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Note 10 - Derivatives (Details Textual) € in Millions, $ in Millions | 1 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Apr. 30, 2022 EUR (€) | Jun. 30, 2021 USD ($) | Jun. 30, 2021 EUR (€) | Jun. 30, 2021 EUR (€) | Dec. 31, 2020 USD ($) | Dec. 31, 2020 EUR (€)
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months |  | $ 0.8 |  |  |  |
Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivative, Term of Contract (Year) |  | 1 year | 1 year |  |  |
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivative, Notional Amount |  | $ 44.3 |  |  | $ 57.3 |
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivative, Notional Amount |  | 2.9 |  |  | 2.7 |
Foreign Exchange Option [Member] | Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivative, Notional Amount |  | $ 5.9 |  |  | $ 8.2 |
Currency Swap [Member] | Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivative, Notional Amount | € |  |  |  | € 156.0 |  | € 159.6
Debt Instrument, Periodic Payment, Interest | € |  |  | € 6.0 |  |  |
Currency Swap [Member] | Designated as Hedging Instrument [Member] | Forecast [Member] |  |  |  |  |  |
Debt Instrument, Periodic Payment, Principal | € | € 150.0 |  |  |  |  |

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- Definition The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994 + Details
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- Definition Amount of the required periodic payments applied to interest. + References Reference 1: 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 + Details
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- Definition Amount of the required periodic payments applied to principal. + References Reference 1: 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 + 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=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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