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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 (₨)
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

X

- Definition

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

+ References

No definition available.

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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

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- Definition

The estimated net amount of unrealized gains or losses on foreign currency 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

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