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Note 1 - Nature of Operations and Summary of Significant Accounting Policies (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 25, 2021
Inventory Valuation Reserves $ 891 $ 1,568  
Depreciation 3,191 3,504  
Research and Development Expense 3,100 2,700 $ 2,000
Advertising Expense 6,900 $ 7,800 $ 7,500
Licensing Agreements [Member]      
Finite-Lived Intangible Asset, Useful Life   17 years  
Developed Technology Rights [Member]      
Finite-Lived Intangible Asset, Useful Life   5 years  
Trademarks [Member]      
Finite-Lived Intangible Asset, Useful Life   20 years  
Noncompete Agreements [Member]      
Finite-Lived Intangible Asset, Useful Life   5 years  
Minimum [Member] | Customer Lists [Member]      
Finite-Lived Intangible Asset, Useful Life   3 years  
Minimum [Member] | Patents [Member]      
Finite-Lived Intangible Asset, Useful Life   5 years  
Maximum [Member] | Customer Lists [Member]      
Finite-Lived Intangible Asset, Useful Life   15 years  
Maximum [Member] | Patents [Member]      
Finite-Lived Intangible Asset, Useful Life   15 years  
Building [Member] | Minimum [Member]      
Property, Plant and Equipment, Useful Life   20 years  
Building [Member] | Maximum [Member]      
Property, Plant and Equipment, Useful Life   30 years  
Machinery and Equipment [Member] | Minimum [Member]      
Property, Plant and Equipment, Useful Life   5 years  
Machinery and Equipment [Member] | Maximum [Member]      
Property, Plant and Equipment, Useful Life   15 years  
Tools, Dies and Molds [Member] | Minimum [Member]      
Property, Plant and Equipment, Useful Life   2 years  
Tools, Dies and Molds [Member] | Maximum [Member]      
Property, Plant and Equipment, Useful Life   5 years  
Book Overdrafts Reclassified to Accrued Liabilities [Member]      
Bank Overdrafts $ 3,400 $ 6,900