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Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income Tax Disclosure [Line Items]      
Tax credit carryforward, valuation allowance, amount $ 14,223    
Net change in the total valuation allowance 2,916 $ 3,207 $ 5,571
Income tax benefit 0 0 $ 0
Deferred tax asset capital closs carryforward 3,271 $ 0  
Benefit of deferred tax assets offset by a valuation allowance $ 544    
Domestic Tax Jurisdiction [Member]      
Income Tax Disclosure [Line Items]      
Corporate tax rate 23.00% 23.00% 23.00%
Chemomab Therapeutics Inc. (U.S.) [Member]      
Income Tax Disclosure [Line Items]      
Corporate tax rate 21.00%    
Israel [Member]      
Income Tax Disclosure [Line Items]      
Corporate tax rate 23.00%    
Tax credit carryforward, valuation allowance, amount $ 192,000 $ 176,000