v3.26.1
Document And Entity Information
Aug. 18, 2026
Document Information [Line Items]  
Entity, Registrant Name Firsthand Technology Value Fund, Inc.
Document, Type 8-K
Document, Period End Date Aug. 18, 2026
Entity, Incorporation, State or Country Code MD
Entity, File Number 814-00830
Entity, Tax Identification Number 27-3008946
Entity, Address, Address Line One 3031 Tisch Way, #110 Plaza West
Entity, Address, City or Town San Jose
Entity, Address, State or Province CA
Entity, Address, Postal Zip Code 95128
City Area Code 800
Local Phone Number 976-8776
Title of 12(b) Security Common
Trading Symbol SVVC
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity, Emerging Growth Company true
Entity, Ex Transition Period false
Amendment Flag false
Entity, Central Index Key 0001495584