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Note 6 - Stockholder's Equity (Details Textual) - $ / shares
12 Months Ended
Dec. 30, 2025
Sep. 09, 2025
Jun. 06, 2025
Mar. 07, 2025
Dec. 04, 2024
Sep. 06, 2024
Jun. 06, 2024
Mar. 06, 2024
Dec. 11, 2023
Mar. 04, 2021
Feb. 22, 2019
May 22, 2017
Aug. 18, 2015
May 06, 2013
Nov. 30, 2025
Nov. 30, 2024
Common Stock, Dividends, Per Share, Declared (in dollars per share)                             $ 0.06 $ 0.05
Preferred Stock Dividends Number of Rights Declared                           1    
Preferred Stock Dividends Number of Rights Minimum Percent of Common Stock that must be Acquired to Make Rights Exercisable                           15.00%    
Preferred Stock Dividends Number of Rights Minimum Percent of Common Stock that Must be Acquired to Make Rights Exercisable, Institutional Investors                           2000.00%    
Right to Purchase Series A Preferred Stock [Member]                                
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)                             0.001  
Class of Warrant or Right, Exercise Price of Warrants or Rights                             $ 0.9  
Class of Warrant or Right, Term                   11 years 9 years 7 years 5 years      
O 2026 Q1 Dividends [Member]                                
Dividends Payable, Date Declared Dec. 09, 2025                              
Common Stock, Dividends, Per Share, Declared (in dollars per share) $ 0.01                              
Dividends Payable, Date of Record Dec. 30, 2025                              
Dividends Payable, Date to be Paid Jan. 21, 2026                              
S 2026 Q1 Dividends [Member]                                
Dividends Payable, Date Declared Dec. 09, 2025                              
Common Stock, Dividends, Per Share, Declared (in dollars per share) $ 0.01                              
Dividends Payable, Date of Record Dec. 30, 2025                              
Dividends Payable, Date to be Paid Jan. 21, 2026                              
O 2026 Q1 Ordinary And Special Dividends [Member]                                
Common Stock, Dividends, Per Share, Declared (in dollars per share) $ 0.02                              
O 2025 Q4 Dividends [Member]                                
Dividends Payable, Date Declared   Sep. 09, 2025                            
Dividends Payable, Date of Record   Sep. 26, 2025                            
Dividends Payable, Date to be Paid   Oct. 15, 2025                            
Common Stock, Dividends, Per Share, Declared (in dollars per share)   $ 0.01                            
O 2025 Q3 Dividends [Member]                                
Dividends Payable, Date Declared     Jun. 06, 2025                          
Dividends Payable, Date of Record     Jun. 26, 2025                          
Dividends Payable, Date to be Paid     Jul. 14, 2025                          
Common Stock, Dividends, Per Share, Declared (in dollars per share)     $ 0.01                          
O 2025 Q2 Dividends [Member]                                
Dividends Payable, Date Declared       Mar. 07, 2025                        
Dividends Payable, Date of Record       Mar. 24, 2025                        
Dividends Payable, Date to be Paid       Apr. 14, 2025                        
Common Stock, Dividends, Per Share, Declared (in dollars per share)       $ 0.01                        
O 2025 Q1 Ordinary and Special Dividends [Member]                                
Dividends Payable, Date Declared         Dec. 04, 2024                      
Dividends Payable, Date of Record         Dec. 23, 2024                      
Dividends Payable, Date to be Paid         Jan. 09, 2025                      
Common Stock, Dividends, Per Share, Declared (in dollars per share)         $ 0.03                      
O 2025 Q1 Dividends [Member]                                
Common Stock, Dividends, Per Share, Declared (in dollars per share)         0.01                      
S 2025 Q1 Dividends [Member]                                
Common Stock, Dividends, Per Share, Declared (in dollars per share)         $ 0.02                      
O 2024 Q4 Dividends [Member]                                
Dividends Payable, Date Declared           Sep. 06, 2024                    
Dividends Payable, Date of Record           Sep. 23, 2024                    
Dividends Payable, Date to be Paid           Oct. 11, 2024                    
Common Stock, Dividends, Per Share, Declared (in dollars per share)           $ 0.01                    
O 2024 Q3 Dividends [Member]                                
Dividends Payable, Date Declared             Jun. 06, 2024                  
Dividends Payable, Date of Record             Jun. 24, 2024                  
Dividends Payable, Date to be Paid             Jul. 12, 2024                  
Common Stock, Dividends, Per Share, Declared (in dollars per share)             $ 0.01                  
O 2024 Q2 Dividends [Member]                                
Dividends Payable, Date Declared               Mar. 06, 2024                
Dividends Payable, Date of Record               Mar. 21, 2024                
Dividends Payable, Date to be Paid               Apr. 12, 2024                
Common Stock, Dividends, Per Share, Declared (in dollars per share)               $ 0.01                
O 2024 Q1 Ordinary and Special Dividends [Member]                                
Dividends Payable, Date Declared                 Dec. 11, 2023              
Common Stock, Dividends, Per Share, Declared (in dollars per share)                 $ 0.02              
Dividends Payable, Date of Record                 Dec. 27, 2023              
Dividends Payable, Date to be Paid                 Jan. 16, 2024              
O 2024 Q1 Dividends [Member]                                
Common Stock, Dividends, Per Share, Declared (in dollars per share)                 $ 0.01              
S 2024 Q1 Dividends [Member]                                
Common Stock, Dividends, Per Share, Declared (in dollars per share)                 $ 0.01