Investment in Riverfront and Brooksville Joint Ventures (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Sep. 30, 2014
Total Investment	$ 18,745		$ 18,745		$ 18,537
Total Assets of the Partnership	49,932		49,932		48,187
Net Loss of the Partnership			(331)		(167)
Company's share of Net Loss of the Partnership	(75)	$ (29)	(255)	$ (92)	(128)
Cash	56		56		208
Cash held in escrow	7,100		7,100		18,822
Amortizable Debt costs	2,069		2,069		2,069
Investments in real estate, net	40,707		40,707		27,088
Total assets	49,932		49,932		48,187
Other liabilities	1,892		1,892		313
Long-term debt	17,000		17,000		17,000
Capital - FRP Holdings	18,745		18,745		18,537
Capital - Third parties	12,295		12,295		12,337
Total liabilities and capital	$ 49,932		$ 49,932		$ 48,187
Riverfront I Joint Venture
Ownership percent	76.91%		76.91%		76.91%
Total Investment	$ 11,239		$ 11,239		$ 11,031
Total Assets of the Partnership	35,594		35,594		33,834
Net Loss of the Partnership			(273)		(89)
Company's share of Net Loss of the Partnership			(226)		(89)
Total assets	35,594		35,594		33,834
Capital - FRP Holdings	$ 11,239		$ 11,239		$ 11,031
Brooksville Joint Venture
Ownership percent	50.00%		50.00%		50.00%
Total Investment	$ 7,506		$ 7,506		$ 7,506
Total Assets of the Partnership	14,338		14,338		14,353
Net Loss of the Partnership			(58)		(78)
Company's share of Net Loss of the Partnership			(29)		(39)
Total assets	14,338		14,338		14,353
Capital - FRP Holdings	$ 7,506		$ 7,506		$ 7,506