Document and Entity Information - USD ($)	12 Months Ended
	Sep. 30, 2015	Dec. 07, 2015	Mar. 31, 2015
Document And Entity Information
Entity Registrant Name	FRP HOLDINGS, INC.
Entity Central Index Key	0000844059
Document Type	10-K
Document Period End Date	Sep. 30, 2015
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Is Entity a Well-known Seasoned Issuer?	No
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 224,249,452
Entity Common Stock, Shares Outstanding		9,796,990
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2015