v3.26.1
Note 8 - Long-term Investment (Details Textual) - USD ($)
12 Months Ended
Sep. 17, 2025
May 27, 2025
Dec. 31, 2025
Dec. 31, 2024
Payments to Acquire Businesses, Gross     $ 300,000 $ (0)
Proceeds from Sale of Equity Method Investments     0 147,000
Other than Temporary Impairment Losses, Investments     $ 0 $ 2,000
B Ocean Capital Management Limited [Member]        
Business Combination, Voting Equity Interest Acquired, Percentage 9.80%      
Payments to Acquire Businesses, Gross $ 300,000      
Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares 200,000      
Business Combination, Consideration Transferred, Equity Interest $ 420,000      
Business Combination, Price Per Share $ 2.1      
Business Combination, Consideration Transferred, Equity Interest, Share to be Issued 200,000      
New Business Holdings Limited [Member]        
Equity Securities Without Readily Determinable Fair Value, Percent   7.69% 7.69%  
Proceeds from Sale of Equity Method Investments   $ 400,000    
Guangdong Yong Fu Xiang Health Management Co., Ltd (Yong Fu Xiang) [Member]        
Equity Securities Without Readily Determinable Fair Value, Percent     9.90%  
Wuhan Ju Liang [Member]        
Equity Securities Without Readily Determinable Fair Value, Percent     9.90%  
Titans [Member]        
Equity Securities Without Readily Determinable Fair Value, Percent     19.60%