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Note L - Business Acquisitions (Details Textual) - USD ($)
3 Months Ended
Oct. 26, 2022
Jul. 29, 2022
Apr. 02, 2023
Knox Safety, Inc [Member]      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents   $ 3,125,000  
Deposits, Business Acquisition   500,000 $ 1,000,000
Knox Safety, Inc [Member] | Selling, General and Administrative Expenses [Member]      
Business Combination, Bargain Purchase, Gain Recognized, Amount   $ 492,000  
Knox Safety, Inc [Member] | Trademarks and Safety Certifications [Member]      
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life (Year)   2 years  
Woodlawn Manufacturing, Ltd [Member]      
Payments to Acquire Businesses, Gross $ 21,558,000    
Deferred Tax Liabilities, Net     $ 860,000
Woodlawn Manufacturing, Ltd [Member] | Trademarks and Safety Certifications [Member]      
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life (Year) 4 years