v3.25.2
Document And Entity Information
Jun. 17, 2025
Document Information [Line Items]  
Entity, Registrant Name ICF International, Inc.
Document, Type 8-K
Document, Period End Date Jun. 17, 2025
Entity, Incorporation, State or Country Code DE
Entity, File Number 001-33045
Entity, Tax Identification Number 22-3661438
Entity, Address, Address Line One 1902 Reston Metro Plaza
Entity, Address, City or Town Reston
Entity, Address, State or Province VA
Entity, Address, Postal Zip Code 20190
City Area Code 703
Local Phone Number 934-3000
Title of 12(b) Security Common Stock
Trading Symbol ICFI
Security Exchange Name NASDAQ
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity, Emerging Growth Company false
Amendment Flag false
Entity, Central Index Key 0001362004