v3.26.1
Document And Entity Information
 12 Months Ended
Dec. 31, 2025
Document Information [Line Items]  
Document Type S-1
Entity Registrant Name CAPSTONE HOLDING CORP.
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 86-0585310
Entity Address, Address Line One 18400 76th Avenue
Entity Address, City or Town Tinley Park
Entity Address, State or Province IL
Entity Address, Postal Zip Code 60477
City Area Code 708
Local Phone Number 371-0660
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company true
Entity Ex Transition Period false
Entity Central Index Key 0000887151
Amendment Flag false