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Cover - USD ($)
 12 Months Ended
Dec. 31, 2024
Mar. 17, 2025
Jun. 30, 2024
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2024    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-36769    
Entity Registrant Name FRP HOLDINGS, INC.    
Entity Incorporation, State or Country Code FL    
Entity Tax Identification Number 47-2449198    
Entity Address, Address Line One 200 W. Forsyth St.,    
Entity Address, Address Line Two 7th Floor,    
Entity Address, City or Town Jacksonville    
Entity Address, State or Province FL    
Entity Address, Postal Zip Code 32202    
City Area Code (904)    
Local Phone Number 396-5733    
Title of 12(b) Security Common Stock, $.10 par value    
Trading Symbol FRPH    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   19,087,334  
Entity Public Float     $ 415,362,228
Documents Incorporated by Reference
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the FRP Holdings, Inc. 2024 Annual Report to Shareholders are incorporated by reference in Parts I and II.
Portions of the FRP Holdings, Inc. Proxy Statement which will be filed with the Securities and Exchange Commission not later than March 31, 2025 are incorporated by reference in Part III.
    
Entity Central Index Key 0000844059    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Amendment Flag false