Note 7 - Derivative Financial Instruments - Foreign Currency Forward Contracts Outstanding (Details) - Dec. 31, 2022 - Not Designated as Hedging Instrument [Member] € in Thousands, SFr in Thousands, $ in Millions	USD ($)	EUR (€)	CHF (SFr)
Euro Foreign Exchange Forward [Member] | Long [Member]
Contract amount	$ 87.3	€ 81,677
Swiss Franc Foreign Exchange Forward [Member] | Long [Member]
Contract amount	22.5		SFr 20,714
Foreign Exchange Forward [Member]
Contract amount	$ 109.8