Note 7 - Derivative Financial Instruments - Foreign Currency Forward Contracts Outstanding (Details) - Jun. 30, 2022 - Not Designated as Hedging Instrument [Member] € in Thousands, ¥ in Thousands, SFr in Thousands, ₩ in Millions, $ in Millions	USD ($)	EUR (€)	JPY (¥)	CHF (SFr)	KRW (₩)
Euro Foreign Exchange Forward [Member] | Long [Member]
Contract amount	$ 63.0	€ 59,670
Contract amount	63.0	€ 59,670
Swiss Franc Foreign Exchange Forward [Member] | Long [Member]
Contract amount	30.4			SFr 29,075
Contract amount	30.4			SFr 29,075
South Korean Won Forward Exchange Forward [Member] | Long [Member]
Contract amount	2.0				₩ 2,597.5
Contract amount	2.0				₩ 2,597.5
Japanese Yen Foreign Exchange Forward [Member] | Long [Member]
Contract amount	0.4		¥ 53,996
Contract amount	0.4		¥ 53,996
Foreign Exchange Forward [Member]
Contract amount	95.8
Contract amount	$ 95.8