v3.26.1
Document and Entity Information
Aug. 12, 2026
Cover [Abstract]  
Entity Registrant Name FIRST ADVANTAGE CORP
Amendment Flag false
Entity Central Index Key 0001210677
Document Type 8-K
Document Period End Date Aug. 12, 2026
Entity Incorporation State Country Code DE
Entity File Number 001-31666
Entity Tax Identification Number 84-3884690
Entity Address, Address Line One 1 Concourse Parkway NE
Entity Address, Address Line Two Suite 200
Entity Address, City or Town Atlanta
Entity Address, State or Province GA
Entity Address, Postal Zip Code 30328
City Area Code (678)
Local Phone Number 868-4151
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, $0.001 par value per share
Trading Symbol FA
Security Exchange Name NASDAQ
Entity Emerging Growth Company false