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Note 2 - Fair Value of Financial Instruments (Details Textual) € in Millions, ₨ in Millions, £ in Millions, $ in Millions, $ in Millions	Mar. 31, 2023 USD ($)	Mar. 31, 2023 EUR (€)	Mar. 31, 2023 GBP (£)	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 CAD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 EUR (€)	Dec. 31, 2022 GBP (£)	Dec. 31, 2022 INR (₨)	Dec. 31, 2022 CAD ($)	Dec. 31, 2018 USD ($)
Cash	$ 160.0					$ 61.2
Foreign Exchange Contract [Member] \| Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member]
Derivative, Notional Amount		€ 37.5	£ 11.5	₨ 3,572			€ 37.4	£ 10.4	₨ 3,411
Foreign Exchange Contract [Member] \| Not Designated as Hedging Instrument [Member]
Derivative, Notional Amount		€ 8.5	£ 4.3	₨ 455	$ 5.0		€ 40.2	£ 16.2	₨ 484	$ 3.8
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	1.6
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	$ (0.6)
Preferred Stock [Member]
Investments											$ 2.5