Investment in Riverfront and Brooksville Joint Ventures (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Sep. 30, 2014
Total Investment	$ 18,640		$ 18,537
Total Assets of the Partnership	49,672		48,187
Net Loss of the Partnership	(38)		(167)
Company's share of Net Loss of the Partnership	(30)	(32)	(128)
Cash	118		208
Cash held in escrow	17,373		18,822
Amortizable Debt costs	2,069		2,069
Investments in real estate, net	30,112		27,088
Total assets	49,672		48,187
Other liabilities	1,703		313
Long-term debt	17,000		17,000
Capital - FRP Holdings	18,640		18,537
Capital - Third parties	12,329		12,337
Total liabilities and capital	49,672		48,187
Riverfront I Joint Venture
Ownership percent	76.91%		76.91%
Total Investment	11,144		11,031
Total Assets of the Partnership	35,296		33,834
Net Loss of the Partnership	(22)		(89)
Company's share of Net Loss of the Partnership	(22)		(89)
Total assets	35,296		33,834
Capital - FRP Holdings	11,144		11,031
Brooksville Joint Venture
Ownership percent	50.00%		50.00%
Total Investment	7,496		7,506
Total Assets of the Partnership	14,376		14,353
Net Loss of the Partnership	(16)		(78)
Company's share of Net Loss of the Partnership	(8)		(39)
Total assets	14,376		14,353
Capital - FRP Holdings	$ 7,496		$ 7,506