Description of Business and Basis of Presentation	9 Months Ended
Sep. 30, 2017
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. (“FRP” or the “Company”) is a holding company engaged in the real estate business, namely (i) warehouse/office/residential building ownership, leasing and management, (ii) mining royalty land ownership and leasing and (iii) land acquisition, entitlement and development primarily for future warehouse/office or residential building construction. 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 and BC FRP Realty 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 is clearly identified on the accompanying Consolidated Statements of Income. 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, 2017 are not necessarily indicative of the results that may be expected for the year ending December 31, 2017. 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 September 30, 2016. On December 19, 2016, the Company changed its fiscal year end from September 30 to December 31. The quarter ended December 31, 2016 was a transition period.

Description of Business and Basis of Presentation

9 Months Ended

Sep. 30, 2017

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

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 and BC FRP Realty 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 is clearly identified on the accompanying Consolidated Statements of Income.

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, 2017 are not necessarily indicative of the results that may be expected for the year ending December 31, 2017. 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 September 30, 2016.

On December 19, 2016, the Company changed its fiscal year end from September 30 to December 31. The quarter ended December 31, 2016 was a transition period.