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Note 2 - Fair Value of Financial Instruments (Details Textual) Pure in Thousands, € in Millions, ₨ in Millions, £ in Millions, SFr in Millions, $ in Millions, $ in Millions | Dec. 31, 2021 USD ($) | Dec. 31, 2021 EUR (€) | Dec. 31, 2021 GBP (£) | Dec. 31, 2021 INR (₨) | Dec. 31, 2021 CAD ($) | Dec. 31, 2021 CHF (SFr) | Dec. 31, 2020 EUR (€) | Dec. 31, 2020 GBP (£) | Dec. 31, 2020 INR (₨)
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Marketable Securities In Unrealized Loss Positions, More Than 12 Months Qualitative Disclosure, Number Of Positions | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] |  |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | € 29.8 | £ 9.4 | ₨ 2,955.3 |  |  | € 25.9 | £ 8.7 | ₨ 1,933.5
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | € 34.5 | £ 11.6 | ₨ 74.9 | $ 2.5 | SFr 1 | € 17.7 | £ 6.5 | ₨ 32.8
Foreign Exchange Contracts for GBP and Euro [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] |  |  |  |  |  |  |  |  |
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months | $ 1.0 |  |  |  |  |  |  |  |
Foreign Exchange Contracts for INR [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] |  |  |  |  |  |  |  |  |
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months | $ 0.3 |  |  |  |  |  |  |  |

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- Definition Represents number of positions for marketable securities in unrealized loss positions for more than 12 months qualitative disclosure. + 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=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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