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Note 7 - Investment Properties (Details Textual)
¥ in Thousands, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Oct. 10, 2024
USD ($)
Feb. 01, 2023
USD ($)
Feb. 01, 2023
CNY (¥)
Jul. 31, 2024
CNY (¥)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Jun. 30, 2010
USD ($)
Jun. 30, 2010
CNY (¥)
Jun. 30, 2024
USD ($)
Jun. 30, 2024
CNY (¥)
Mao Ye [Member]                        
Operating Lease, Lease Income         $ 6 $ 6 $ 12 $ 12        
Monthly Lease Revenue Amount   $ 2 ¥ 15                  
Depreciation         3 4 7 8        
Real Estate Investments, Net         46   46       $ 53  
Jiang Huai [Member]                        
Operating Lease, Lease Income         0 0 0 0        
Depreciation         6 6 12 12        
Payments to Acquire Projects       ¥ 3,600         $ 580 ¥ 3,600    
Real Estate Investments, Net         124   124       137 ¥ 990
FuLi [Member]                        
Operating Lease, Lease Income         3 0 3 1        
Monthly Lease Revenue Amount $ 1                      
Depreciation         7 7 13 14        
Real Estate Investments, Net         202   202       $ 217  
CHINA                        
Operating Lease, Lease Income         9 6 15 13        
Depreciation         $ 16 $ 17 $ 32 $ 34