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Note 9 - Fair Value Measurements (Details Textual) - USD ($)
$ in Thousands
Dec. 29, 2024
Dec. 31, 2023
Jun. 30, 2023
Jun. 28, 2023
Apr. 28, 2023
Financing Receivable, after Allowance for Credit Loss, Noncurrent $ 1,292 $ 0      
Equity Securities without Readily Determinable Fair Value, Amount $ 300 300      
Measurement Input, Discount for Lack of Marketability [Member] | Minimum [Member]          
Equity Securities, FV-NI, Measurement Input 34        
Measurement Input, Discount for Lack of Marketability [Member] | Maximum [Member]          
Equity Securities, FV-NI, Measurement Input 41        
Measurement Input, Expected Term [Member] | Minimum [Member]          
Equity Securities, FV-NI, Measurement Input 4        
Measurement Input, Expected Term [Member] | Maximum [Member]          
Equity Securities, FV-NI, Measurement Input 5        
Measurement Input, Risk Free Interest Rate [Member] | Minimum [Member]          
Equity Securities, FV-NI, Measurement Input 0.75        
Measurement Input, Risk Free Interest Rate [Member] | Maximum [Member]          
Equity Securities, FV-NI, Measurement Input 0.92        
Measurement Input, Expected Dividend Payment [Member]          
Equity Securities, FV-NI, Measurement Input 0        
Measurement Input, Price Volatility [Member] | Minimum [Member]          
Equity Securities, FV-NI, Measurement Input 63        
Measurement Input, Price Volatility [Member] | Maximum [Member]          
Equity Securities, FV-NI, Measurement Input 78        
The Note [Member]          
Financing Receivable, after Allowance for Credit Loss, Noncurrent $ 1,290       $ 1,160
Notes Receivable, Interest Rate       4.69% 3.00%
Financing Receivable, Effective Annual Interest Rate       4.80%  
Financing Receivable, Default Interest Rate 15.31%   10.00%    
Interest Receivable $ 129        
Asset Pledged as Collateral [Member] | Credit Card Debt [Member]          
Money Market Funds, at Carrying Value   $ 100      
Money Market Funds [Member]          
Investment Interest Rate   0.01%      
Money Market Funds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]          
Cash and Cash Equivalents, Fair Value Disclosure $ 21,900 $ 24,600