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Galectin Sciences LLC (Details) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended 114 Months Ended
Jan. 31, 2014
Jun. 30, 2023
Dec. 31, 2014
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]            
Amount expanded in cash       $ (626,000) $ (15,470,000)  
Galectin Sciences, LLC [Member]            
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]            
Initial cash investment $ 400,000          
Equity ownership percentage   83.20%   83.20%   83.20%
Amount expanded in cash     $ 400,000      
Contribution for expenses   $ 150,000       $ 3,514,000
Galectin Sciences, LLC [Member] | SBH [Member]            
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]            
Equity ownership percentage 50.00%          
Contribution for expenses       $ 311,000    
Galectin Sciences, LLC [Member] | SBH [Member] | IPR&D [Member]            
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]            
Estimated fair value of asset contributed to joint venture $ 400,000