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Note 2 - Business Acquisitions, Goodwill and Purchased Intangible Assets (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Jan. 30, 2023
Sep. 30, 2023
Jul. 01, 2023
Sep. 24, 2022
Sep. 30, 2023
Sep. 24, 2022
Amortization of Intangible Assets   $ 8,857,000   $ 8,206,000 $ 26,617,000 $ 25,082,000
MCT Worldwide, LLC [Member]            
Payments to Acquire Businesses, Gross $ 28,000,000          
Cash Acquired from Acquisition     $ 600,000      
Business Combination, Consideration Transferred $ 26,800,000          
Business Combination, Acquisition Related Costs   $ 33,000     $ 500,000 $ 0