v3.25.2
Document and Entity Information
Sep. 10, 2025
Entity Listings [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Sep. 10, 2025
Entity File Number 001-41013
Entity Registrant Name GCT Semiconductor Holding, Inc.
Entity Central Index Key 0001851961
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 86-2171699
Entity Address, Address Line One 2290 North 1st Street, Suite 201
Entity Address, Address Line Two SUITE 201
Entity Address, City or Town San Jose
Entity Address, State or Province CA
Entity Address, Postal Zip Code 95131
City Area Code 408
Local Phone Number 434-6040
Entity Emerging Growth Company true
Entity Ex Transition Period false
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(g) Security Warrants, each whole warrant exercisable for one share of Common Stock for $11.50 per share
Trading Symbol GCTS.WS
Security Exchange Name NYSE
Common Stock [Member]  
Entity Listings [Line Items]  
Title of 12(g) Security Common Stock, par value $0.0001 per share
Trading Symbol GCTS
Security Exchange Name NYSE