Document and Entity Information	9 Months Ended
	Sep. 30, 2019 shares
Document And Entity Information
Entity Registrant Name	FRP HOLDINGS, INC.
Entity Central Index Key	0000844059
Document Type	10-Q
Document Period End Date	Sep. 30, 2019
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Incorporation State Country	FL
Entity File Number	001-36769
Is Entity's Reporting Status Current?	Yes
Is the interactive data current?	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding	9,823,668
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2019
Is Entity a smaller reporting company	true
Is Entity an emerging growth company	false