Note 7 - Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 25, 2021

Notes Tables

Schedule of Derivative Instruments [Table Text Block]

Currency	Contract Position		Contract Amount (Local Currency)		Contract Amount (U.S. Dollars)
Euro		Buy		30,185	$	34,200
Swiss Franc		Buy		19,086		20,800
					$	55,000

Derivative Instruments, Gain (Loss) [Table Text Block]

Derivatives Not Designated	Location of Gain (Loss)	Fiscal Year
as Hedging Instruments	Recognized on Derivatives	2021			2020		2019
Foreign exchange forward contracts	Foreign transaction gain (loss)	$	(3,428	)	$	756		n/a