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
Mar. 31, 2026
Mar. 31, 2025
Net loss attributable to Capstone Holding Corp. stockholders (in thousands) $ (1,915) $ (2,433)
Weighted average number of common shares outstanding – basic and diluted (in shares) 9,329,828 1,555,566
Net loss per share attributable to Capstone Holding Corp. stockholders – basic and diluted (in dollars per share) $ (0.21) $ (1.56)
Previously Reported [Member]    
Net loss attributable to Capstone Holding Corp. stockholders (in thousands)   $ (2,433)
Weighted average number of common shares outstanding – basic and diluted (in shares)   5,190,251
Net loss per share attributable to Capstone Holding Corp. stockholders – basic and diluted (in dollars per share)   $ (0.47)
Revision of Prior Period, Adjustment [Member]    
Net loss attributable to Capstone Holding Corp. stockholders (in thousands)   $ 0
Weighted average number of common shares outstanding – basic and diluted (in shares)   (3,634,685)
Net loss per share attributable to Capstone Holding Corp. stockholders – basic and diluted (in dollars per share)   $ (1.09)