Note 7 - Derivative Financial Instruments - Foreign Currency Forward Contracts Outstanding (Details) - Mar. 26, 2022 - Not Designated as Hedging Instrument [Member] € in Thousands, ¥ in Thousands, SFr in Thousands, $ in Millions	USD ($)	EUR (€)	JPY (¥)	CHF (SFr)
Euro Foreign Exchange Forward [Member] | Long [Member]
Contract amount	$ 38.7	€ 35,115
Swiss Franc Foreign Exchange Forward [Member] | Long [Member]
Contract amount	18.0			SFr 16,747
Japanese Yen Foreign Exchange Forward [Member] | Long [Member]
Contract amount	1.0		¥ 120,920
Foreign Exchange Forward [Member]
Contract amount	$ 57.7