Note 7 - Derivative Financial Instruments - Foreign Currency Forward Contracts Outstanding (Details) - Mar. 27, 2021 - Not Designated as Hedging Instrument [Member] € in Thousands, ¥ in Thousands, SFr in Thousands, RM in Thousands, $ in Thousands	USD ($)	EUR (€)	CHF (SFr)	JPY (¥)	MYR (RM)
Swiss Franc Foreign Exchange Forward [Member] | Long [Member]
Contract amount	$ 11,000		SFr 10,315
Japanese Yen Foreign Exchange Forward [Member] | Long [Member]
Contract amount	2,700			¥ 294,354
Euro Foreign Exchange Forward [Member] | Long [Member]
Contract amount	15,650	€ 13,275
Malaysian Ringgit Foreign Exchange Forward [Member] | Long [Member]
Contract amount	3,500				RM 14,514
Foreign Exchange Forward [Member]
Contract amount	$ 32,850