Description of Business and Basis of Presentation	9 Months Ended
Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Basis of Presentation	(1) Description of Business and Basis of Presentation. FRP Holdings, Inc. is a holding company engaged in the real estate business, namely (i) mining royalty land ownership and leasing, (ii) land acquisition, entitlement and development primarily for future warehouse/office or residential building construction, (iii) ownership, leasing, and management of a residential apartment building, and (iv) warehouse/office building ownership, leasing and management. The accompanying consolidated financial statements include the accounts of FRP Holdings, Inc. (the “Company” or “FRP”) inclusive of our operating real estate subsidiaries, FRP Development Corp. (“Development”) and Florida Rock Properties, Inc. (”Properties”). Our investment in the Brooksville joint venture, BC FRP Realty joint venture, and RiverFront Holdings II joint venture are accounted for under the equity method of accounting (See Note 11). Effective July 1, 2017 the Company consolidated the assets (at fair value), liabilities and operating results of our Riverfront Investment Partners I, LLC partnership (“Dock 79”) which was previously accounted for under the equity method. The ownership of Dock 79 attributable to our partner MRP Realty is reflected on our consolidated balance sheet as a noncontrolling interest. Such noncontrolling interests are reported on the Consolidated Balance Sheets within equity but separately from shareholders' equity. On the Consolidated Statements of Income, all of the revenues and expenses from Dock 79 are reported in net income, including both the amounts attributable to the Company and the noncontrolling interest. The amounts of consolidated net income attributable to the noncontrolling interest are clearly identified on the accompanying Consolidated Statements of Income. On May 21, 2018, the Company completed the disposition of 40 industrial warehouse properties and 3 additional land parcels to an affiliate of Blackstone Real Estate Partners VIII, L.P. for $347.2 million. One warehouse property valued at $11.7 million was excluded from the sale due to the tenant exercising its right of first refusal to purchase the property. This results in disposition of all of the Company’s industrial flex/office warehouse properties and as a result, these properties have been reclassified as discontinued operations for all periods presented. The Asset Management segment will contain the remaining three office buildings on a go forward basis. These statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and the instructions to Form 10-Q and do not include all the information and footnotes required by accounting principles generally accepted in the United States of America for complete financial statements. In the opinion of management, all adjustments (primarily consisting of normal recurring accruals) considered necessary for a fair statement of the results for the interim periods have been included. Operating results for the nine months ended September 30, 2018 are not necessarily indicative of the results that may be expected for the year ending December 31, 2018. The accompanying consolidated financial statements and the information included under the heading "Management's Discussion and Analysis of Financial Condition and Results of Operations" should be read in conjunction with the Company's consolidated financial statements and related notes included in the Company’s Form 10-K for the year ended December 31, 2017.

Description of Business and Basis of Presentation

9 Months Ended

Sep. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation and Basis of Presentation

(1) Description of Business and Basis of Presentation.

FRP Holdings, Inc. is a holding company engaged in the real estate business, namely (i) mining royalty land ownership and leasing, (ii) land acquisition, entitlement and development primarily for future warehouse/office or residential building construction, (iii) ownership, leasing, and management of a residential apartment building, and (iv) warehouse/office building ownership, leasing and management.

The accompanying consolidated financial statements include the accounts of FRP Holdings, Inc. (the “Company” or “FRP”) inclusive of our operating real estate subsidiaries, FRP Development Corp. (“Development”) and Florida Rock Properties, Inc. (”Properties”). Our investment in the Brooksville joint venture, BC FRP Realty joint venture, and RiverFront Holdings II joint venture are accounted for under the equity method of accounting (See Note 11).

Effective July 1, 2017 the Company consolidated the assets (at fair value), liabilities and operating results of our Riverfront Investment Partners I, LLC partnership (“Dock 79”) which was previously accounted for under the equity method. The ownership of Dock 79 attributable to our partner MRP Realty is reflected on our consolidated balance sheet as a noncontrolling interest. Such noncontrolling interests are reported on the Consolidated Balance Sheets within equity but separately from shareholders' equity. On the Consolidated Statements of Income, all of the revenues and expenses from Dock 79 are reported in net income, including both the amounts attributable to the Company and the noncontrolling interest. The amounts of consolidated net income attributable to the noncontrolling interest are clearly identified on the accompanying Consolidated Statements of Income.

On May 21, 2018, the Company completed the disposition of 40 industrial warehouse properties and 3 additional land parcels to an affiliate of Blackstone Real Estate Partners VIII, L.P. for $347.2 million. One warehouse property valued at $11.7 million was excluded from the sale due to the tenant exercising its right of first refusal to purchase the property. This results in disposition of all of the Company’s industrial flex/office warehouse properties and as a result, these properties have been reclassified as discontinued operations for all periods presented. The Asset Management segment will contain the remaining three office buildings on a go forward basis.

These statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and the instructions to Form 10-Q and do not include all the information and footnotes required by accounting principles generally accepted in the United States of America for complete financial statements. In the opinion of management, all adjustments (primarily consisting of normal recurring accruals) considered necessary for a fair statement of the results for the interim periods have been included. Operating results for the nine months ended September 30, 2018 are not necessarily indicative of the results that may be expected for the year ending December 31, 2018. The accompanying consolidated financial statements and the information included under the heading "Management's Discussion and Analysis of Financial Condition and Results of Operations" should be read in conjunction with the Company's consolidated financial statements and related notes included in the Company’s Form 10-K for the year ended December 31, 2017.