v3.26.1
Note 1 - Nature of Operations - Effect of the Restatement of Previously Issued Financial Statements (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Net loss attributable to Capstone Holding Corp. stockholders (in thousands) $ (2,014) $ (998) $ (5,147) $ (4,360)
Weighted average number of common shares outstanding – basic and diluted (in shares) 5,838,134 157,610 4,225,334 157,610
Net loss per share attributable to Capstone Holding Corp. stockholders – basic and diluted (in dollars per share) $ (0.34) $ (6.33) $ (1.22) $ (27.66)
Previously Reported [Member]        
Net loss attributable to Capstone Holding Corp. stockholders (in thousands) $ (2,014)   $ (5,147)  
Weighted average number of common shares outstanding – basic and diluted (in shares) 5,700,214   3,560,035  
Net loss per share attributable to Capstone Holding Corp. stockholders – basic and diluted (in dollars per share) $ (0.35)   $ (1.45)  
Revision of Prior Period, Adjustment [Member]        
Net loss attributable to Capstone Holding Corp. stockholders (in thousands) $ 0   $ 0  
Weighted average number of common shares outstanding – basic and diluted (in shares) 137,920   665,299  
Net loss per share attributable to Capstone Holding Corp. stockholders – basic and diluted (in dollars per share) $ 0.01   $ 0.23