Basis of Presentation	9 Months Ended
Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	(1) Basis of Presentation. 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”) subsequent to the completed spin-off (the “Spin-off”) of our transportation assets into a new, publicly traded entity, Patriot Transportation Holding, Inc. (“Patriot”; stock symbol “PATI”) effective January 30, 2015. As a result of the Spin-off the former transportation segment of the Company is reported as a discontinued operation that cannot receive any corporate overhead allocation. Hence, all corporate overhead of the transportation group through the date of the spin-off is included in “corporate expense” on the Company’s consolidated income statements herein. See Note 3 for a breakdown of corporate expenses showing the amounts per the Company’s segments, the unallocated to any segment and the unallocated to discontinued operations. Reclassifications to the appropriate prior period line items and amounts have been made to be comparable to the current presentation. Our investment in the 50% owned Brooksville Joint Venture and in the Riverfront Investment Partners I, LLC are accounted for under the equity method of accounting (See Note 13). 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 June 30, 2015 are not necessarily indicative of the results that may be expected for the fiscal year ending September 30, 2015. 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, 2014. Following the completion of the spin-off of the transportation business on January 30, 2015, management conducted a strategic review of the Company’s real estate operations. As a result of this review, information that the Company’s chief operating decision maker (its chief executive officer) regularly reviews for purposes of allocating resources and assessing performance changed. Therefore, beginning in fiscal year 2015, the Company is reporting its financial performance based on the three reportable segments described below. Beginning with the quarter ending March 31, 2015, our financial statements reflected the new reporting structure with prior periods adjusted accordingly. Our Mining and Royalties segment stays the same, but based on our strategic review the Developed Property Rentals segment has been broken down into an Asset Management segment and a Land Development and Construction segment to reflect how management now evaluates the real estate activities previously presented in the Developed Property Rentals segment. The Asset Management segment contains all the developed buildings capable of producing current rental income; the Land Development and Construction segments contains the remaining developable land not yet developed to its eventual highest and best use potential where the Company's focus is to add further entitlements, construct vertical improvements or market the property to third parties all in an effort to bring such property to income producing status or realization of its fair market value through sales or exchange. This Land Development and Construction segment is generally in a pre-income production state where objectives are long term capital investment for eventual production of long-term rental streams or capital investment to achieve highest potential market value for sale to third parties.

Basis of Presentation

9 Months Ended

Jun. 30, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

(1) Basis of Presentation. 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”) subsequent to the completed spin-off (the “Spin-off”) of our transportation assets into a new, publicly traded entity, Patriot Transportation Holding, Inc. (“Patriot”; stock symbol “PATI”) effective January 30, 2015. As a result of the Spin-off the former transportation segment of the Company is reported as a discontinued operation that cannot receive any corporate overhead allocation. Hence, all corporate overhead of the transportation group through the date of the spin-off is included in “corporate expense” on the Company’s consolidated income statements herein. See Note 3 for a breakdown of corporate expenses showing the amounts per the Company’s segments, the unallocated to any segment and the unallocated to discontinued operations. Reclassifications to the appropriate prior period line items and amounts have been made to be comparable to the current presentation. Our investment in the 50% owned Brooksville Joint Venture and in the Riverfront Investment Partners I, LLC are accounted for under the equity method of accounting (See Note 13). 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 June 30, 2015 are not necessarily indicative of the results that may be expected for the fiscal year ending September 30, 2015. 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, 2014.

Following the completion of the spin-off of the transportation business on January 30, 2015, management conducted a strategic review of the Company’s real estate operations. As a result of this review, information that the Company’s chief operating decision maker (its chief executive officer) regularly reviews for purposes of allocating resources and assessing performance changed. Therefore, beginning in fiscal year 2015, the Company is reporting its financial performance based on the three reportable segments described below. Beginning with the quarter ending March 31, 2015, our financial statements reflected the new reporting structure with prior periods adjusted accordingly.

Our Mining and Royalties segment stays the same, but based on our strategic review the Developed Property Rentals segment has been broken down into an Asset Management segment and a Land Development and Construction segment to reflect how management now evaluates the real estate activities previously presented in the Developed Property Rentals segment. The Asset Management segment contains all the developed buildings capable of producing current rental income; the Land Development and Construction segments contains the remaining developable land not yet developed to its eventual highest and best use potential where the Company's focus is to add further entitlements, construct vertical improvements or market the property to third parties all in an effort to bring such property to income producing status or realization of its fair market value through sales or exchange. This Land Development and Construction segment is generally in a pre-income production state where objectives are long term capital investment for eventual production of long-term rental streams or capital investment to achieve highest potential market value for sale to third parties.