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The interest rate for investments that have an interest rate. For fixed rate investments, this indicates the fixed interest rate. If the investment has a variable interest rate, the rate stated here may be the rate that is currently relevant. In this case the "Investment, Interest Rate is Current Rate for Variable Rate Investment Flag", "Investment, Interest Rate is Discount Rate at Purchase Flag", "Investment, Interest Rate Reflects Current Yield Flag" should be used. If one of these flags are not appropriate to explain the interest rate that is indicated, then a new flag should be added or an explanation should be included in "Investment, Additional Information".

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Description of long-term debt arrangements, which are debt arrangements that originally require full repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer, and disclosures pertaining to the underlying arrangements, including repayment terms, conversion features, interest rates, restrictions on assets and activities, debt covenants, and other matters important to users of the financial statements. Types of long-term debt arrangements include borrowing under notes payable, bonds payable, debentures, term loans, and other contractual obligations for payment.

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Investments in Joint Ventures (Details Narrative) $ in Thousands	1 Months Ended	3 Months Ended				9 Months Ended		12 Months Ended
	May 31, 2016 USD ($)	Sep. 30, 2018 USD ($) integer	Sep. 30, 2017 USD ($)	Mar. 31, 2016 USD ($) a ft²	Dec. 31, 2006 USD ($)	Sep. 30, 2018 USD ($) integer	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)	Sep. 28, 2017 USD ($) integer	Oct. 04, 2006 a
Company's share of the loss of the joint venture		$ 13	$ 12			$ 36	$ 1,589
Joint Venture consolidated retained earnings		(2,664)				(2,664)		$ (2,638)
Outstanding balance		$ 0				0		$ 29,664
Cash contribution						$ 7,160	$ 621
Construction loan description								5.6% to 8% mortgage notes due in installments through 2027
Buildings \| integer		3				3
Eagle BankRiverFront Holdings II, OOC
Interest rate over LIBOR						3.25%
Construction loan description						<p class="MsoNormal" style="text-align: justify">.Â The loan from Eagle Bank allows draws of up to $71 million during construction at an interest rate of 3.25% over libor. The loan is interest only and matures in 36 months with a 12 month extension assuming completion of construction and at least one occupancy.Â There is a provision for an additional 72 months extension with a 30 year amortization of principal at 2.15% over 7 year US Treasury Constant if NOI is sufficient for a 9% yield.<p></p></p>
Vulcan
Joint venture percentage stake										50.00%
Acres conributed \| a										553
Vulcan leasehold interest \| a										3,443
FRP additional contribution for land					$ 3,018
Additional land acquired \| a										288
St Johns Properties JV St Johns
Value of land contributed				$ 3,240
Joint venture percentage stake				50.00%
Acres conributed \| a				10
MRP
Other ownership capital contribution		$ 5,600				$ 5,600
Development fee						$ 725
Brooksville Quarry, LLC
Land acreage \| a										4,300
Joint venture percentage stake		50.00%				50.00%		50.00%		50.00%
Acres conributed \| a										3,443
Book value of land contribution					2,548
FRP additional contribution for land					$ 3,018
Additional land acquired \| a										288
Company's share of the loss of the joint venture						$ 35		$ 40
BC FRP Realty, LLC
Square feet \| ft²				329,000
Value of land contributed				$ 7,500
Joint venture percentage stake		50.00%		50.00%		50.00%		50.00%
Distribution received	$ 2,130
Acres conributed \| a				25
Company's share of the loss of the joint venture						$ 0		$ 0
Construction financing through September 15, 2022									$ 17,250
Interest rate over LIBOR						2.50%
Outstanding balance		$ 8,374				$ 8,374
Buildings \| integer									4
RiverFront Holdings II, LLC
Value of land contributed						$ 16,300
Joint venture percentage stake		80.00%				80.00%
Book value of land contribution						$ 4,600
Company's share of the loss of the joint venture						1
Cash contribution						6,200
Preferred equity financing						13,750
Preferred equity financing advanced						$ 690
Preferred equity financing interest rate						7.50%