FRP (FRPH) 10-Q 10 Nov 21 2021 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2021	Nov. 09, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2021
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2021
Current Fiscal Year End Date	--12-31
Entity File Number	001-36769
Entity Registrant Name	FRP HOLDINGS, INC.
Entity Central Index Key	0000844059
Entity Tax Identification Number	47-2449198
Entity Incorporation, State or Country Code	FL
Entity Address, Address Line One	200 W. Forsyth St.
Entity Address, Address Line Two	7th Floor
Entity Address, City or Town	Jacksonville
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	32202
City Area Code	904
Local Phone Number	396-5733
Title of 12(b) Security	Common Stock, $.10 par value
Trading Symbol	FRPH
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		9,411,028

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Real estate investments at cost:
Land	$ 123,397	$ 91,744
Buildings and improvements	255,366	141,241
Projects under construction	13,799	4,879
Total investments in properties	392,562	237,864
Less accumulated depreciation and depletion	44,266	34,724
Net investments in properties	348,296	203,140
Real estate held for investment, at cost	9,559	9,151
Investments in joint ventures	145,975	167,071
Net real estate investments	503,830	379,362
Cash and cash equivalents	162,881	73,909
Cash held in escrow	502	196
Accounts receivable, net	991	923
Investments available for sale at fair value	4,315	75,609
Federal and state income taxes receivable	2,082	4,621
Unrealized rents	580	531
Deferred costs	3,047	707
Other assets	525	502
Total assets	678,753	536,360
Liabilities:
Secured notes payable	178,371	89,964
Accounts payable and accrued liabilities	3,706	3,635
Other liabilities	1,886	1,886
Deferred revenue	470	542
Deferred income taxes	65,379	56,106
Deferred compensation	1,247	1,242
Tenant security deposits	764	332
Total liabilities	251,823	153,707
Equity:
Common stock, $.10 par value 25,000,000 shares authorized, 9,411,028 and 9,363,717 shares issued and outstanding, respectively	941	936
Capital in excess of par value	57,512	56,279
Retained earnings	338,344	309,764
Accumulated other comprehensive income, net	193	675
Total shareholders’ equity	396,990	367,654
Noncontrolling interest MRP	29,940	14,999
Total equity	426,930	382,653
Total liabilities and shareholders’ equity	$ 678,753	$ 536,360

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Common stock, par value	$ 0.10	$ 0.10
Common shares, authorized	25,000,000	25,000,000
Common shares, outstanding	9,411,028	9,363,717
Common shares, issued	9,411,028	9,363,717

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues:
Lease revenue	$ 6,224	$ 3,591	$ 15,623	$ 10,636
Mining lands lease revenue	2,249	2,507	7,198	7,094
Total Revenues	8,473	6,098	22,821	17,730
Cost of operations:
Depreciation, depletion and amortization	3,796	1,438	9,627	4,406
Operating expenses	1,557	892	3,792	2,598
Property taxes	986	706	2,764	2,089
Management company indirect	745	844	2,137	2,208
Corporate expenses	657	637	2,486	2,850
Total cost of operations	7,741	4,517	20,806	14,151
Total operating profit	732	1,581	2,015	3,579
Net investment income, including realized gains of $0, $55, $0 and $297, respectively	943	1,814	3,366	5,915
Interest expense	(414)	(46)	(1,785)	(142)
Equity in loss of joint ventures	(1,244)	(1,788)	(3,997)	(3,773)
Gain on remeasurement of investment in real estate partnership	0	0	51,139	0
Gain on sale of real estate	0	5,732	805	9,329
Income before income taxes	17	7,293	51,543	14,908
Provision for income taxes	130	2,022	10,500	4,161
Net income (loss)	(113)	5,271	41,043	10,747
Gain (loss) attributable to noncontrolling interest	(465)	(184)	12,236	(475)
Net income attributable to the Company	$ 352	$ 5,455	$ 28,807	$ 11,222
Earnings per common share:
Basic	$ 0.04	$ 0.57	$ 3.08	$ 1.16
Diluted	$ 0.04	$ 0.57	$ 3.07	$ 1.16
Number of shares (in thousands) used in computing:
-basic earnings per common share	9,363	9,517	9,352	9,646
-diluted earnings per common share	9,399	9,545	9,390	9,681

Consolidated Statements of In_2

Consolidated Statements of Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Realized gains	$ 0	$ 55	$ 0	$ 297

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Net income (loss)	$ (113)	$ 5,271	$ 41,043	$ 10,747
Other comprehensive income net of tax:
Minimum pension liability, net of income tax effect of $0, $53, $0 and $53	0	143	0	143
Unrealized gain (loss) on investments sale, net of income tax effect of $(28), $(126), $(179) and $(26)	(75)	(341)	(482)	(70)
Comprehensive income (loss)	(188)	5,073	40,561	10,820
Less comp. income attributable to Noncontrolling    interest	(465)	(184)	12,236	(475)
Comprehensive income attributable to the Company	$ 277	$ 5,257	$ 28,325	$ 11,295

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Tax effect on pension liability	$ 0	$ 53	$ 0	$ 53
Unrealized gain (loss) on sale of investments, net	$ (28)	$ (126)	$ (179)	$ (26)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income	$ 41,043	$ 10,747
Adjustments to reconcile net income to net cash provided by continuing operating      activities:
Depreciation, depletion and amortization	9,772	4,572
Deferred income taxes	9,273	2,421
Equity in loss of joint ventures	3,997	3,773
Gain on remeasurement of invest in real estate partnership	(51,139)	0
Gain on sale of equipment and property	(876)	(9,343)
Stock-based compensation	1,006	1,241
Realized gain on available for sale investments	0	(297)
Net changes in operating assets and liabilities:
Accounts receivable	639	(377)
Deferred costs and other assets	151	(178)
Accounts payable and accrued liabilities	(442)	440
Income taxes payable and receivable	2,539	(340)
Other long-term liabilities	437	694
Net cash provided by operating activities	16,400	13,353
Cash flows from investing activities:
Investments in properties	(11,555)	(3,200)
Investments in joint ventures	(10,031)	(12,297)
Return of capital from investments in joint ventures	20,100	1,386
Purchases of investments available for sale	0	(24,584)
Proceeds from sales of investments available for sale	69,865	57,240
Cash at consolidation of real estate partnership	3,704	0
Proceeds from the sale of assets	934	19,257
Cash held in escrow	30	(15,073)
Net cash provided by investing activities	73,047	22,729
Cash flows from financing activities:
Proceeds from long-term debt	92,070	0
Repayment of long-term debt	(90,000)	0
Debt issue costs	(704)	0
Distribution to noncontrolling interest	(1,846)	(713)
Repurchase of company stock	(264)	(15,687)
Exercise of employee stock options	269	0
Net cash used in financing activities	(475)	(16,400)
Net increase in cash and cash equivalents	88,972	19,682
Cash and cash equivalents at beginning of year	73,909	26,607
Cash and cash equivalents at end of the period	$ 162,881	$ 46,289

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Beginning balance, value at Dec. 31, 2019	$ 982	$ 57,705	$ 315,278	$ 923	$ 374,888	$ 16,757	$ 391,645
Common Stock, Shares, Outstanding, Beginning Balance at Dec. 31, 2019	9,817,429
Stock option grant compensation	$ 0	71	0	0	71	0	71
Restricted stock compensation	0	140	0	0	140	0	140
Net income	0	0	11,222	0	11,222	(475)	10,747
Distributions to partners	0	0	0	0	0	(713)	(713)
Unrealized loss on investment, net	0	0	0	(70)	(70)	0	(70)
Shares granted to Employees	$ 1	529	0	0	530	0	530
Shares granted to employees	11,448
Restricted stock award, shares	20,520
Shares purchased and cancelled	$ (38)	(2,252)	(13,397)	0	(15,687)	0	(15,687)
Shares granted to Directors	$ 1	499	0	0	500	0	500
Shares granted to Directors shares	12,050
Minimum pension liability, net	$ 0	0	0	143	143	0	143
Restricted stock award	$ 2	(2)	0	0	0	0	0
Shares purchased and cancelled, shares	(379,809)
Ending balance, value at Sep. 30, 2020	$ 948	56,690	313,103	996	371,737	15,569	387,306
Common Stock, Shares, Outstanding, Ending Balance at Sep. 30, 2020	9,481,638
Beginning balance, value at Dec. 31, 2019	$ 982	57,705	315,278	923	374,888	16,757	391,645
Common Stock, Shares, Outstanding, Beginning Balance at Dec. 31, 2019	9,817,429
Ending balance, value at Dec. 31, 2020	$ 936	56,279	309,764	675	367,654	14,999	$ 382,653
Common Stock, Shares, Outstanding, Ending Balance at Dec. 31, 2020	9,363,717						9,363,717
Beginning balance, value at Jun. 30, 2020	$ 956	57,107	310,486	1,194	369,743	16,058	$ 385,801
Common Stock, Shares, Outstanding, Beginning Balance at Jun. 30, 2020	9,563,144
Stock option grant compensation	$ 0	24	0	0	24	0	24
Restricted stock compensation	0	46	0	0	46	0	46
Net income	0	0	5,455	0	5,455	(184)	5,271
Distributions to partners	0	0	0	0	0	(305)	(305)
Unrealized loss on investment, net	0	0	0	(341)	(341)	0	(341)
Shares purchased and cancelled	(8)	(487)	(2,838)	0	(3,333)	0	(3,333)
Minimum pension liability, net	$ 0	0	0	143	143	0	143
Shares purchased and cancelled, shares	(81,506)
Ending balance, value at Sep. 30, 2020	$ 948	56,690	313,103	996	371,737	15,569	387,306
Common Stock, Shares, Outstanding, Ending Balance at Sep. 30, 2020	9,481,638
Beginning balance, value at Dec. 31, 2020	$ 936	56,279	309,764	675	367,654	14,999	$ 382,653
Common Stock, Shares, Outstanding, Beginning Balance at Dec. 31, 2020	9,363,717						9,363,717
Stock option grant compensation	$ 0	52	0	0	52	0	$ 52
Restricted stock compensation	0	404	0	0	404	0	404
Net income	0	0	28,807	0	28,807	12,236	41,043
Distributions to partners	0	0	0	0	0	(1,846)	(1,846)
Unrealized loss on investment, net	0	0	0	(482)	(482)	0	(482)
Shares granted to Employees	$ 0	50	0	0	50	0	50
Shares granted to employees	1,098
Restricted stock award, shares	27,778
Shares purchased and cancelled	$ 0	(37)	(227)	0	(264)	0	(264)
Shares granted to Directors	$ 1	499	0	0	500	0	500
Shares granted to Directors shares	9,105
Minimum pension liability, net							0
Restricted stock award	$ 3	(3)	0	0	0	0	0
Exercise of stock options	$ 1	268	0	0	269	0	269
Exercise of stock options, shares	15,334
Contributions from partners	$ 0	0	0	0	0	4,551	4,551
Shares purchased and cancelled, shares	(6,004)
Ending balance, value at Sep. 30, 2021	$ 941	57,512	338,344	193	396,990	29,940	$ 426,930
Common Stock, Shares, Outstanding, Ending Balance at Sep. 30, 2021	9,411,028						9,411,028
Beginning balance, value at Jun. 30, 2021	$ 941	57,360	337,992	268	396,561	31,724	$ 428,285
Common Stock, Shares, Outstanding, Beginning Balance at Jun. 30, 2021	9,411,028
Stock option grant compensation	$ 0	17	0	0	17	0	17
Restricted stock compensation	0	135	0	0	135	0	135
Net income	0	0	352	0	352	(465)	(113)
Distributions to partners	0	0	0	0	0	(1,319)	(1,319)
Unrealized loss on investment, net	0	0	0	(75)	(75)	0	(75)
Minimum pension liability, net							0
Ending balance, value at Sep. 30, 2021	$ 941	$ 57,512	$ 338,344	$ 193	$ 396,990	$ 29,940	$ 426,930
Common Stock, Shares, Outstanding, Ending Balance at Sep. 30, 2021	9,411,028						9,411,028

Description of Business and Bas

Description of Business and Basis of Presentation	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Description of Business and Basis of Presentation	(1) Description of Business and Basis of Presentation FRP Holdings, Inc. is a holding company engaged in various real estate businesses, 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 residential apartment buildings, 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”), Riverfront Investment Partners I, LLC, and commencing March 31, 2021 also Riverfront Investment Partners II, LLC (See Note 12). Our investment in the Brooksville joint venture, BC FRP Realty joint venture, Riverfront Investment Partners II, LLC prior to March 31, 2021, Bryant Street Partnerships, 1800 Half Street and Greenville/Woodfield are accounted for under the equity method of accounting (See Note 11). Our ownership of Riverfront Investment Partners I, LLC and Riverfront Investment Partners II, LLC includes a non-controlling interest representing the ownership of our partner. The Company uses the cost method to account for its investment in DST Hickory Creek because it does not have significant influence over operating and financial policies. 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, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021. 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, 2020.

Recently Issued Accounting Stan

Recently Issued Accounting Standards	9 Months Ended
	Sep. 30, 2021
Accounting Changes and Error Corrections [Abstract]
Recently Issued Accounting Standards	(2) Recently Issued Accounting Standards None.

Business Segments

Business Segments	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Business Segments	(3) Business Segments The Company is reporting its financial performance based on four The Asset Management segment owns, leases and manages commercial properties. The flex/office warehouses in the Asset Management Segment were sold and reclassified to discontinued operations leaving only two one nd Our Mining Royalty Lands segment owns several properties comprising approximately 15,000 4,280 Through our Development segment, we own and are continuously assessing for their highest and best use for several parcels of land that are in various stages of development. Our overall strategy in this segment is to convert all of our non-income producing lands into income production through (i) an orderly process of constructing new buildings for us to own and operate or (ii) a sale to, or joint venture with, third parties. Additionally, our Development segment will form joint ventures on new developments of land not previously owned by the Company. The Stabilized Joint Venture segment includes joint ventures which own, lease and manage buildings that have met our initial lease up criteria. Two of our two joint ventures in the segment, Riverfront Investment Partners I, LLC (“Dock 79”) and Riverfront Investment Partners II, LLC (“The Maren”) are consolidated. The Maren was consolidated effective March 31, 2021 and prior periods are still reflected under the equity method. The ownership of Dock 79 and The Maren (commencing March 31, 2021) attributable to our partner MidAtlantic Realty Partners, LLC (MRP) 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 Maren is reflected in Equity in loss of joint ventures on the Consolidated Statements of Income for the periods up to March 31, 2021 but is reflected like Dock 79 for periods commencing April 1, 2021. The amounts of consolidated net income attributable to the noncontrolling interest is clearly identified on the accompanying Consolidated Statements of Income. Operating results and certain other financial data for the Company’s business segments Three Months ended Nine Months ended September 30, September 30, 2021 2020 2021 2020 Revenues: Revenues Asset management $ 619 721 1,919 2,089 Revenues Mining royalty lands 2,249 2,507 7,198 7,094 Revenues Development 401 290 1,169 862 Revenues Stabilized Joint Venture 5,204 2,580 12,535 7,685 Revenues 8,473 6,098 22,821 17,730 Operating profit (loss): Before corporate expenses: Operating profit before corporate expenses Asset management $ 169 200 528 700 Operating profit before corporate expenses Mining royalty lands 2,037 2,291 6,531 6,486 Operating profit before corporate expenses Development (404 ) (659 ) (1,201 ) (2,136 ) Operating profit before corporate expenses Stabilized Joint Venture (413 ) 386 (1,357 ) 1,379 Operating profit before corporate expenses Operating profit before corporate expenses 1,389 2,218 4,501 6,429 Corporate expenses: Corporate expenses Allocated to asset management (180 ) (165 ) (682 ) (738 ) Corporate expenses Allocated to mining royalty lands (69 ) (53 ) (258 ) (234 ) Corporate expenses Allocated to development (326 ) (381 ) (1,267 ) (1,710 ) Corporate expenses Allocated to stabilized joint venture (82 ) (38 ) (279 ) (168 ) Corporate expenses Total corporate expenses (657 ) (637 ) (2,486 ) (2,850 ) Operating profit $ 732 1,581 2,015 3,579 Interest expense $ 414 46 1,785 142 Depreciation, depletion and amortization: Depreciation, depletion and amortization Asset management $ 137 137 408 529 Depreciation, depletion and amortization Mining royalty lands 38 60 161 160 Depreciation, depletion and amortization Development 53 53 159 160 Depreciation, depletion and amortization Stabilized Joint Venture 3,568 1,188 8,899 3,557 Depreciation, depletion and amortization $ 3,796 1,438 9,627 4,406 Capital expenditures: Capital expenditures Asset management $ 100 233 318 787 Capital expenditures Mining royalty lands — — — — Capital expenditures Development 4,237 1,754 10,443 2,371 Capital expenditures Stabilized Joint Venture 373 46 794 42 Capital expenditures $ 4,710 2,033 11,555 3,200 Identifiable net assets September 30, December 31, Identifiable net assets 2021 2020 Assets Asset management $ 11,127 11,172 Assets Mining royalty lands 37,205 37,387 Assets Development 185,500 196,212 Assets Stabilized Joint Venture 268,907 130,472 Investments available for sale Investments available for sale at fair value 4,315 75,609 Cash Cash items 163,383 74,105 Assets Unallocated corporate assets 8,316 11,403 Assets $ 678,753 536,360

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2021
Related Party Transactions [Abstract]
Related Party Transactions	(4) Related Party Transactions The Company is a party to a Transition Services Agreement which resulted from our January 30, 2015 spin-off of Patriot Transportation Holding, Inc. (Patriot). The Transition Services Agreement sets forth the terms on which Patriot will provide to FRP certain services that were shared prior to the Spin-off, including the services of certain shared executive officers. The boards of the respective companies amended and extended this agreement for one year effective April 1, 2021. The consolidated statements of income reflect charges and/or allocation from Patriot for these services of $ 260,000 290,000 772,000 870,000 To determine these allocations between FRP and Patriot as set forth in the Transition Services Agreement, we employ an allocation method to allocate said expenses and thus we believe that the allocations to FRP are a reasonable approximation of the costs related to FRP’s operations, but any such related-party transactions cannot be presumed to be carried out on an arm’s-length basis.

Long-Term Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Long-Term Debt	(5) Long-Term Debt The Company’s Outstanding Debt September 30, December 31, 2021 2020 Fixed rate mortgage loans, 3.03% interest only, matures 4/1/2033 $ 178,371 89,964 Credit agreement — — Long-term debt $ 178,334 89,964 On February 6, 2019, the Company entered into a First Amendment to the 2015 Credit Agreement (the “Credit Agreement”) with Wells Fargo Bank, N.A. (“Wells Fargo”), effective February 6, 2019. The Credit Agreement modifies the Company’s prior Credit Agreement with Wells Fargo dated January 30, 2015. The Credit Agreement establishes a five 20 million 1.50 1.25 1.0 0.25 0.20 0.15 no 506,000 19,494,000 1 1.08238 228 million On November 17, 2017, Dock 79 borrowed a principal sum of $ 90,000,000 4.125 120 months 900,000 Effective March 31, 2021, the Company consolidated the assets (at current fair value), liabilities and operating results of our Riverfront Investment Partners II, LLC partnership (“The Maren”) which was previously accounted for under the equity method. As such the full amount of our mortgage loan was recorded in the consolidated financial statements. On March 19, 2021, the Company refinanced Dock 79 and The Maren projects pursuant to separate Loan Agreements and Deed of Trust Notes entered into with Teachers Insurance and Annuity Association of America, LLC. Dock 79 and The Maren borrowed principal sums of $ 92,070,000 88,000,000 3.03 Either loan may be prepaid subsequent to April 1, 2024, subject to yield maintenance premiums. Either loan may be transferred to a qualified buyer as part of a one-time sale subject to a 60% loan to value, minimum of 7.5% debt yield and a 0.75% transfer fee Debt cost amortization of $ 37,000 113,000 999,000 948,000 2,892,000 2,823,000 The Company was in compliance with all

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Earnings per Share	(6) Earnings per Share The following details the computations of the Basic and Diluted Earnings Per Common Share Three Months ended Nine Months ended September 30, September 30, 2021 2020 2021 2020 Weighted average common shares outstanding during the period – shares used for basic earnings per common share 9,363 9,517 9,352 9,646 Common shares issuable under share-based payment plans which are potentially dilutive 36 28 38 35 Common shares used for diluted earnings per common share 9,399 9,545 9,390 9,681 Net income attributable to the Company $ 352 5,455 28,807 11,222 Earnings per common share: -basic $ 0.04 0.57 3.08 1.16 -diluted $ 0.04 0.57 3.07 1.16 For the nine months ended September 30, 2021, 19,950 74,065 53,545 During the first nine months of 2021 the Company repurchased 6,004 43.95 379,809 41.30

Stock-Based Compensation Plans

Stock-Based Compensation Plans	9 Months Ended
	Sep. 30, 2021
Share-based Payment Arrangement [Abstract]
Stock-Based Compensation Plans	(7) Stock-Based Compensation Plans The Company has two ten exercisable immediately or become exercisable in cumulative installments of 20% or 25% The Company utilizes the Black-Scholes valuation model for estimating fair value of stock compensation for options awarded to officers and employees. Each grant is evaluated based upon assumptions at the time of grant. The assumptions were no 29 41 1.0 2.9 3.0 7.0 The dividend yield of zero In January 2021, 8,896 four years 18,882 five years 20,520 five years 397,747 1,098 11,448 The Company recorded the following Stock Compensation Expense Three Months ended Nine Months ended September 30, September 30, 2021 2020 2021 2020 Stock option grants $ 17 24 52 71 Restricted stock awards 135 46 404 140 Employee stock grant — — 50 530 Annual director stock award — — 500 500 Stock compensation $ 152 70 1,006 1,241 A Summary of changes in outstanding options Weighted Weighted Weighted Number Average Average Average Of Exercise Remaining Grant Date Options Shares Price Term (yrs) Fair Value(000's) Outstanding at December 31, 2020 120,089 $ 35.33 5.3 $ 1,531 Exercised (15,334 ) $ 17.54 $ (115 ) Outstanding at September 30, 2021 104,755 $ 37.93 5.1 $ 1,416 Exercisable at September 30, 2021 92,407 $ 36.87 4.8 $ 1,212 Vested during nine months ended September 30, 2021 — $ — The aggregate intrinsic value of exercisable in-the-money options was $ 1,761,000 1,884,000 55.92 The unrecognized compensation cost of options granted to FRP employees but not yet vested as of September 30, 2021 was $ 146,000 2.1 years Gains of $ 602,000 A Summary of changes in restricted stock awards Weighted Weighted Weighted Number Average Average Average Of Exercise Remaining Grant Date Restricted stock Shares Price Term (yrs) Fair Value(000's) Non-vested at December 31, 2020 20,520 $ 46.30 3.4 $ 950 Time-based awards granted 8,896 45.55 405 Performance-based awards granted 18,882 45.55 860 Non-vested at September 30, 2021 48,298 $ 45.87 3.3 $ 2,215 Total compensation cost of restricted stock granted but not yet vested as of September 30, 2021 was $ 1,515,000 3.6 years

Contingent Liabilities

Contingent Liabilities	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Contingent Liabilities	(8) Contingent Liabilities The Company may be involved in litigation on a number of matters and is subject to certain claims which arise in the normal course of business. The Company has retained certain self-insurance risks with respect to losses for third party liability and property damage. In the opinion of management, none of these matters are expected to have a material adverse effect on the Company’s consolidated financial condition, results of operations or cash flows. The Company is subject to numerous environmental laws and regulations. The Company believes that the ultimate disposition of currently known environmental matters will not have a material effect on its financial position, liquidity, or operations. The Company can give no assurance that previous environmental studies with respect to its properties have revealed all potential environmental contaminants; that any previous owner, occupant or tenant did not create any material environmental condition not known to the Company; that the current environmental condition of the properties will not be affected by tenants and occupants, by the condition of nearby properties, or by unrelated third parties; and that changes in applicable environmental laws and regulations or their interpretation will not result in additional environmental liability to the Company. As of September 30, 2021, there was $ 506,000

Concentrations

Concentrations	9 Months Ended
	Sep. 30, 2021
Risks and Uncertainties [Abstract]
Concentrations	(9) Concentrations The mining royalty lands segment has a total of five 23.8 294,000

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	(10) Fair Value Measurements Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value hierarchy prioritizes the inputs to valuation techniques used to measure fair value into three broad levels. Level 1 means the use of quoted prices in active markets for identical assets or liabilities. Level 2 means the use of values that are derived principally from or corroborated by observable market data. Level 3 means the use of inputs are those that are unobservable and significant to the overall fair value measurement. At September 30, 2021, the Company was invested in two 16,000 4,299,000 4,315,000 At September 30, 2021 and 2020, the carrying amount reported in the consolidated balance sheets for cash and cash equivalents and revolving credit approximate their fair value based upon the short-term nature of these items. The fair values of the Company’s other mortgage notes payable were estimated based on current rates available to the Company for debt of the same remaining maturities. At September 30, 2021, the carrying amount and fair value of such other long-term debt was $ 178,371,000 173,634,000 89,027,000 95,138,000

Investments in Joint Ventures

Investments in Joint Ventures	9 Months Ended
	Sep. 30, 2021
Equity Method Investments and Joint Ventures [Abstract]
Investments in Joint Ventures	(11) Investments in Joint Ventures The Company has investments in joint ventures, primarily with other real estate developers. Joint ventures where FRP is not the primary beneficiary are reflected in the line “Investment in joint ventures” on the balance sheet and “Equity in loss of joint ventures” on the income statement. The assets of these joint ventures are restricted to use by the joint ventures and their obligations can only be settled by their assets or additional contributions by the partners. The following table summarizes the Company’s Investments in unconsolidated joint ventures The Company's Share of Profit Common Total Total Assets of Profit (Loss) (Loss) of the Ownership Investment The Partnership Of the Partnership Partnership (1) As of September 30, 2021 Brooksville Quarry, LLC 50.00 % $ 7,463 14,332 (66 ) (32 ) BC FRP Realty, LLC 50.00 % 5,454 22,612 (227 ) (113 ) Riverfront Holdings II, LLC (1) — — (760 ) (628 ) Bryant Street Partnerships 61.36 % 59,899 201,144 (3,566 ) (3,234 ) Hyde Park — — — — DST Hickory Creek 26.65 % 6,000 46,560 (325 ) 257 Amber Ridge Loan 12,471 12,471 — — 1800 Half St. Owner, LLC 61.37 % 38,456 76,829 19 25 Greenville/Woodfield Partnerships 40.00 % 16,232 80,476 (680 ) (272 ) Total $ 145,975 454,424 (5,605 ) (3,997 ) The Company's Share of Profit Common Total Total Assets of Profit (Loss) (Loss) of the Ownership Investment The Partnership Of the Partnership Partnership (1) As of December 31, 2020 Brooksville Quarry, LLC 50.00 % $ 7,499 14,347 (78 ) (39 ) BC FRP Realty, LLC 50.00 % 5,184 22,747 (411 ) (207 ) Riverfront Holdings II, LLC 80.00 % 23,533 108,538 (4,573 ) (3,907 ) Bryant Street Partnerships 61.36 % 60,159 173,814 (836 ) (2,130 ) Hyde Park 591 591 — — DST Hickory Creek 26.65 % 6,000 47,761 (367 ) 339 Amber Ridge Loan 10,026 10,026 — — 1800 Half St. Owner, LLC 61.37 % 37,875 54,275 158 164 Greenville/Woodfield Partnerships 40.00 % 16,204 46,457 182 90 Total $ 167,071 478,556 (5,925 ) (5,690 ) (1) Riverfront Holdings II, LLC was consolidated on March 31, 2021. Bryant Street Partnerships includes $ 674,000 1,146,000 354,000 471,000 The Major classes of assets, liabilities and equity of the Company’s Investments in Joint Ventures Investments in Apartment/Mixed Use Joint Ventures as of September 30, 2021 As of September 30, 2021 Total Riverfront Bryant Street DST Hickory 1800 Half St. Greenville/ Apartment/ Holdings II, LLC Partnership Creek Partnership Woodfield Mixed Use Investments in real estate, net $ 0 198,039 44,224 73,580 80,261 $ 396,104 Cash and cash equivalents 0 848 978 439 207 2,472 Unrealized rents & receivables 0 1,892 1,004 0 8 2,904 Deferred costs 0 365 354 2,810 0 3,529 Total Assets $ 0 201,144 46,560 76,829 80,476 $ 405,009 Secured notes payable $ 0 116,705 29,325 0 35,879 $ 181,909 Other liabilities 0 7,620 162 15,766 5,370 28,918 Capital - FRP 0 58,014 4,550 37,483 15,691 115,738 Capital – Third Parties 0 18,805 12,523 23,580 23,536 78,444 Total Liabilities and Capital $ 0 201,144 46,560 76,829 80,476 $ 405,009 Investments in Joint Ventures as of September 30, 2021 As of September 30, 2021 Brooksville BC FRP Amber Ridge Apartment/ Grand Quarry, LLC Realty, LLC Hyde Park Loan Mixed Use Total Investments in real estate, net. $ 14,283 21,627 0 12,471 396,104 $ 444,485 Cash and cash equivalents 49 231 0 0 2,472 2,752 Unrealized rents & receivables 0 470 0 0 2,904 3,374 Deferred costs 0 284 0 0 3,529 3,813 Total Assets $ 14,332 22,612 0 12,471 405,009 $ 454,424 Secured notes payable $ 0 11,524 0 0 181,909 $ 193,433 Other liabilities 81 138 0 0 28,918 29,137 Capital - FRP 7,463 5,475 0 12,471 115,738 141,147 Capital - Third Parties 6,788 5,475 0 0 78,444 90,707 Total Liabilities and Capital $ 14,332 22,612 0 12,471 405,009 $ 454,424 The Company’s capital recorded by the unconsolidated Joint Ventures is $ 4,828,000 The major classes of assets, liabilities and equity of the Company’s Investments in Joint Ventures as of December 31, 2020 are summarized in the following two tables (in thousands): Investments in Apartment/Mixed Use Joint Ventures as of December 31, 2020 As of December 31, 2020 Total Riverfront Bryant Street DST Hickory 1800 Half St. Greenville/ Apartment/ Holdings II, LLC Partnership Creek Partnership Woodfield Mixed Use Investments in real estate, net $ 105,737 173,560 45,379 37,452 42,668 $ 404,796 Cash and cash equivalents 2,626 111 1,202 14,011 3,554 21,504 Unrealized rents & receivables 13 58 775 2 0 848 Deferred costs 162 85 405 2,810 235 3,697 Total Assets $ 108,538 173,814 47,761 54,275 46,457 $ 430,845 Secured notes payable $ 64,982 72,471 29,291 0 1,776 $ 168,520 Other liabilities 4,189 22,952 107 1,953 4,774 33,975 Capital - FRP 34,667 58,559 4,894 37,466 15,963 151,549 Capital - Third Parties 4,700 19,832 13,469 14,856 23,944 76,801 Total Liabilities and Capital $ 108,538 173,814 47,761 54,275 46,457 $ 430,845 Investments in Joint Ventures as of December 31, 2020 As of December 31, 2020 Brooksville BC FRP Amber Ridge Apartment/ Grand Quarry, LLC Realty, LLC Hyde Park Loan Mixed Use Total Investments in real estate, net. $ 14,287 22,067 591 10,026 404,796 $ 451,767 Cash and cash equivalents 55 90 0 0 21,504 21,649 Unrealized rents & receivables 0 254 0 0 848 1,102 Deferred costs 5 336 0 0 3,697 4,038 Total Assets $ 14,347 22,747 591 10,026 430,845 $ 478,556 Secured notes payable $ 0 12,370 0 0 168,520 $ 180,890 Other liabilities 28 123 0 0 33,975 34,126 Capital - FRP 7,499 5,127 591 10,026 151,549 174,792 Capital - Third Parties 6,820 5,127 0 0 76,801 88,748 Total Liabilities and Capital $ 14,347 22,747 591 10,026 430,845 $ 478,556 The amount of consolidated retained earnings (accumulated deficit) for these joint ventures was $ (7,660,000) (8,278,000) The income statements of the Bryant Street Partnerships Bryant Street Bryant Street Partnerships Partnerships Total JV Company Share Nine Months ended Nine Months ended September 30, September 30, 2021 2021 Revenues: Rental Revenue $ 1,153 $ 707 Revenue – other 190 117 Total Revenues 1,343 824 Cost of operations: Depreciation and amortization 1,482 909 Operating expenses 1,938 1,190 Property taxes 255 156 Total cost of operations 3,675 2,255 Total operating profit (2,332 ) (1,431 ) Interest expense (1,234 ) (1,803 ) Net loss before tax (3,566 ) (3,234 )

Consolidation of Riverfront Inv

Consolidation of Riverfront Investment Partners II, LLC. Riverfront Holdings II, LLC	9 Months Ended
	Sep. 30, 2021
Consolidation Of Riverfront Investment Partners Ii Llc. Riverfront Holdings Ii Llc
Consolidation of Riverfront Investment Partners II, LLC. Riverfront Holdings II, LLC	(12) Consolidation of Riverfront Investment Partners II, LLC. Riverfront Holdings II, LLC . On May 4, 2018, the Company and MRP Realty formed a Joint Venture to develop the second phase only of the four phase master development known as Riverfront on the Anacostia in Washington, D.C. The purpose of the Joint Venture is to develop and own a 250,000 264 6,937 16,300,000 4.6 million 6.2 million 80 5.6 million 725,000 13.75 million 7.5 joint venture and oversees and controls the day-to-day operations of the project. In March 2021, Phase II (The Maren) reached stabilization. Stabilization in this case means 90 Reaching stabilization results in a change of control for accounting purposes as the veto rights of the minority shareholder lapsed and the Company became the primary beneficiary. As such, beginning March 31, 2021, the Company consolidated the assets (at fair value), liabilities and operating results of the joint venture. This consolidation resulted in a gain on remeasurement of investment in real estate partnership of $ 51,139,000 13,965,000 70.41 Maren consolidation at stabilization As of March 31, 2021 Riverfront Gain on Holdings II, LLC Remeasurement Revised Land $ 6,472 $ 22,858 $ 29,330 Building and improvements, net 87,269 23,531 110,800 Project under construction 258 — 258 Value of leases in place — 4,750 4,750 Cash 3,704 — 3,704 Cash held in escrow 336 — 336 Accounts receivable 707 — 707 Prepaid expenses 197 — 197 Total Assets $ 98,943 $ 51,139 $ 150,082 Long-term Debt $ 88,000 $ — $ 88,000 Amortizable debt costs (1,072 ) — (1,072 ) Other liabilities 441 — 441 Equity – FRP 7,026 37,174 44,200 Equity - MRP 4,548 13,965 18,513 Total Liabilities and Capital $ 98,943 $ 51,139 $ 150,082

Subsequent Event

Subsequent Event	9 Months Ended
	Sep. 30, 2021
Subsequent Events [Abstract]
Subsequent Event	(13) Subsequent Event On October 8, 2021, the Company entered into a loan agreement with a Baltimore developer to be the principal capital source of a residential development venture in Harford County, Maryland to be known as “Aberdeen Station.” We have committed up to $ 31.1 million 10 344

Business Segments (Tables)

Business Segments (Tables)	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Operating results and certain other financial data for the Company’s business segments	Operating results and certain other financial data for the Company’s business segments Three Months ended Nine Months ended September 30, September 30, 2021 2020 2021 2020 Revenues: Revenues Asset management $ 619 721 1,919 2,089 Revenues Mining royalty lands 2,249 2,507 7,198 7,094 Revenues Development 401 290 1,169 862 Revenues Stabilized Joint Venture 5,204 2,580 12,535 7,685 Revenues 8,473 6,098 22,821 17,730 Operating profit (loss): Before corporate expenses: Operating profit before corporate expenses Asset management $ 169 200 528 700 Operating profit before corporate expenses Mining royalty lands 2,037 2,291 6,531 6,486 Operating profit before corporate expenses Development (404 ) (659 ) (1,201 ) (2,136 ) Operating profit before corporate expenses Stabilized Joint Venture (413 ) 386 (1,357 ) 1,379 Operating profit before corporate expenses Operating profit before corporate expenses 1,389 2,218 4,501 6,429 Corporate expenses: Corporate expenses Allocated to asset management (180 ) (165 ) (682 ) (738 ) Corporate expenses Allocated to mining royalty lands (69 ) (53 ) (258 ) (234 ) Corporate expenses Allocated to development (326 ) (381 ) (1,267 ) (1,710 ) Corporate expenses Allocated to stabilized joint venture (82 ) (38 ) (279 ) (168 ) Corporate expenses Total corporate expenses (657 ) (637 ) (2,486 ) (2,850 ) Operating profit $ 732 1,581 2,015 3,579 Interest expense $ 414 46 1,785 142 Depreciation, depletion and amortization: Depreciation, depletion and amortization Asset management $ 137 137 408 529 Depreciation, depletion and amortization Mining royalty lands 38 60 161 160 Depreciation, depletion and amortization Development 53 53 159 160 Depreciation, depletion and amortization Stabilized Joint Venture 3,568 1,188 8,899 3,557 Depreciation, depletion and amortization $ 3,796 1,438 9,627 4,406 Capital expenditures: Capital expenditures Asset management $ 100 233 318 787 Capital expenditures Mining royalty lands — — — — Capital expenditures Development 4,237 1,754 10,443 2,371 Capital expenditures Stabilized Joint Venture 373 46 794 42 Capital expenditures $ 4,710 2,033 11,555 3,200
Identifiable net assets	Identifiable net assets September 30, December 31, Identifiable net assets 2021 2020 Assets Asset management $ 11,127 11,172 Assets Mining royalty lands 37,205 37,387 Assets Development 185,500 196,212 Assets Stabilized Joint Venture 268,907 130,472 Investments available for sale Investments available for sale at fair value 4,315 75,609 Cash Cash items 163,383 74,105 Assets Unallocated corporate assets 8,316 11,403 Assets $ 678,753 536,360

Long-Term Debt (Tables)

Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Outstanding Debt	The Company’s Outstanding Debt September 30, December 31, 2021 2020 Fixed rate mortgage loans, 3.03% interest only, matures 4/1/2033 $ 178,371 89,964 Credit agreement — — Long-term debt $ 178,334 89,964

Earnings per Share (Tables)

Earnings per Share (Tables)	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Basic and Diluted Earnings Per Common Share	The following details the computations of the Basic and Diluted Earnings Per Common Share Three Months ended Nine Months ended September 30, September 30, 2021 2020 2021 2020 Weighted average common shares outstanding during the period – shares used for basic earnings per common share 9,363 9,517 9,352 9,646 Common shares issuable under share-based payment plans which are potentially dilutive 36 28 38 35 Common shares used for diluted earnings per common share 9,399 9,545 9,390 9,681 Net income attributable to the Company $ 352 5,455 28,807 11,222 Earnings per common share: -basic $ 0.04 0.57 3.08 1.16 -diluted $ 0.04 0.57 3.07 1.16

Stock-Based Compensation Plans

Stock-Based Compensation Plans (Tables)	9 Months Ended
	Sep. 30, 2021
Share-based Payment Arrangement [Abstract]
Stock Compensation Expense	The Company recorded the following Stock Compensation Expense Three Months ended Nine Months ended September 30, September 30, 2021 2020 2021 2020 Stock option grants $ 17 24 52 71 Restricted stock awards 135 46 404 140 Employee stock grant — — 50 530 Annual director stock award — — 500 500 Stock compensation $ 152 70 1,006 1,241
Summary of changes in outstanding options	A Summary of changes in outstanding options Weighted Weighted Weighted Number Average Average Average Of Exercise Remaining Grant Date Options Shares Price Term (yrs) Fair Value(000's) Outstanding at December 31, 2020 120,089 $ 35.33 5.3 $ 1,531 Exercised (15,334 ) $ 17.54 $ (115 ) Outstanding at September 30, 2021 104,755 $ 37.93 5.1 $ 1,416 Exercisable at September 30, 2021 92,407 $ 36.87 4.8 $ 1,212 Vested during nine months ended September 30, 2021 — $ —
Summary of changes in restricted stock awards	A Summary of changes in restricted stock awards Weighted Weighted Weighted Number Average Average Average Of Exercise Remaining Grant Date Restricted stock Shares Price Term (yrs) Fair Value(000's) Non-vested at December 31, 2020 20,520 $ 46.30 3.4 $ 950 Time-based awards granted 8,896 45.55 405 Performance-based awards granted 18,882 45.55 860 Non-vested at September 30, 2021 48,298 $ 45.87 3.3 $ 2,215

Investments in Joint Ventures (

Investments in Joint Ventures (Tables)	9 Months Ended
	Sep. 30, 2021
Equity Method Investments and Joint Ventures [Abstract]
Investments in unconsolidated joint ventures	The following table summarizes the Company’s Investments in unconsolidated joint ventures The Company's Share of Profit Common Total Total Assets of Profit (Loss) (Loss) of the Ownership Investment The Partnership Of the Partnership Partnership (1) As of September 30, 2021 Brooksville Quarry, LLC 50.00 % $ 7,463 14,332 (66 ) (32 ) BC FRP Realty, LLC 50.00 % 5,454 22,612 (227 ) (113 ) Riverfront Holdings II, LLC (1) — — (760 ) (628 ) Bryant Street Partnerships 61.36 % 59,899 201,144 (3,566 ) (3,234 ) Hyde Park — — — — DST Hickory Creek 26.65 % 6,000 46,560 (325 ) 257 Amber Ridge Loan 12,471 12,471 — — 1800 Half St. Owner, LLC 61.37 % 38,456 76,829 19 25 Greenville/Woodfield Partnerships 40.00 % 16,232 80,476 (680 ) (272 ) Total $ 145,975 454,424 (5,605 ) (3,997 ) The Company's Share of Profit Common Total Total Assets of Profit (Loss) (Loss) of the Ownership Investment The Partnership Of the Partnership Partnership (1) As of December 31, 2020 Brooksville Quarry, LLC 50.00 % $ 7,499 14,347 (78 ) (39 ) BC FRP Realty, LLC 50.00 % 5,184 22,747 (411 ) (207 ) Riverfront Holdings II, LLC 80.00 % 23,533 108,538 (4,573 ) (3,907 ) Bryant Street Partnerships 61.36 % 60,159 173,814 (836 ) (2,130 ) Hyde Park 591 591 — — DST Hickory Creek 26.65 % 6,000 47,761 (367 ) 339 Amber Ridge Loan 10,026 10,026 — — 1800 Half St. Owner, LLC 61.37 % 37,875 54,275 158 164 Greenville/Woodfield Partnerships 40.00 % 16,204 46,457 182 90 Total $ 167,071 478,556 (5,925 ) (5,690 ) (1) Riverfront Holdings II, LLC was consolidated on March 31, 2021. Bryant Street Partnerships includes $ 674,000 1,146,000 354,000 471,000
Investments in Apartment/Mixed Use Joint Ventures as of September 30, 2021	The Major classes of assets, liabilities and equity of the Company’s Investments in Joint Ventures Investments in Apartment/Mixed Use Joint Ventures as of September 30, 2021 As of September 30, 2021 Total Riverfront Bryant Street DST Hickory 1800 Half St. Greenville/ Apartment/ Holdings II, LLC Partnership Creek Partnership Woodfield Mixed Use Investments in real estate, net $ 0 198,039 44,224 73,580 80,261 $ 396,104 Cash and cash equivalents 0 848 978 439 207 2,472 Unrealized rents & receivables 0 1,892 1,004 0 8 2,904 Deferred costs 0 365 354 2,810 0 3,529 Total Assets $ 0 201,144 46,560 76,829 80,476 $ 405,009 Secured notes payable $ 0 116,705 29,325 0 35,879 $ 181,909 Other liabilities 0 7,620 162 15,766 5,370 28,918 Capital - FRP 0 58,014 4,550 37,483 15,691 115,738 Capital – Third Parties 0 18,805 12,523 23,580 23,536 78,444 Total Liabilities and Capital $ 0 201,144 46,560 76,829 80,476 $ 405,009
Investments in Joint Ventures as of September 30, 2021	Investments in Joint Ventures as of September 30, 2021 As of September 30, 2021 Brooksville BC FRP Amber Ridge Apartment/ Grand Quarry, LLC Realty, LLC Hyde Park Loan Mixed Use Total Investments in real estate, net. $ 14,283 21,627 0 12,471 396,104 $ 444,485 Cash and cash equivalents 49 231 0 0 2,472 2,752 Unrealized rents & receivables 0 470 0 0 2,904 3,374 Deferred costs 0 284 0 0 3,529 3,813 Total Assets $ 14,332 22,612 0 12,471 405,009 $ 454,424 Secured notes payable $ 0 11,524 0 0 181,909 $ 193,433 Other liabilities 81 138 0 0 28,918 29,137 Capital - FRP 7,463 5,475 0 12,471 115,738 141,147 Capital - Third Parties 6,788 5,475 0 0 78,444 90,707 Total Liabilities and Capital $ 14,332 22,612 0 12,471 405,009 $ 454,424
Investments in Apartment/Mixed Use Joint Ventures as of December 31, 2020	The major classes of assets, liabilities and equity of the Company’s Investments in Joint Ventures as of December 31, 2020 are summarized in the following two tables (in thousands): Investments in Apartment/Mixed Use Joint Ventures as of December 31, 2020 As of December 31, 2020 Total Riverfront Bryant Street DST Hickory 1800 Half St. Greenville/ Apartment/ Holdings II, LLC Partnership Creek Partnership Woodfield Mixed Use Investments in real estate, net $ 105,737 173,560 45,379 37,452 42,668 $ 404,796 Cash and cash equivalents 2,626 111 1,202 14,011 3,554 21,504 Unrealized rents & receivables 13 58 775 2 0 848 Deferred costs 162 85 405 2,810 235 3,697 Total Assets $ 108,538 173,814 47,761 54,275 46,457 $ 430,845 Secured notes payable $ 64,982 72,471 29,291 0 1,776 $ 168,520 Other liabilities 4,189 22,952 107 1,953 4,774 33,975 Capital - FRP 34,667 58,559 4,894 37,466 15,963 151,549 Capital - Third Parties 4,700 19,832 13,469 14,856 23,944 76,801 Total Liabilities and Capital $ 108,538 173,814 47,761 54,275 46,457 $ 430,845
Investments in Joint Ventures as of December 31, 2020	Investments in Joint Ventures as of December 31, 2020 As of December 31, 2020 Brooksville BC FRP Amber Ridge Apartment/ Grand Quarry, LLC Realty, LLC Hyde Park Loan Mixed Use Total Investments in real estate, net. $ 14,287 22,067 591 10,026 404,796 $ 451,767 Cash and cash equivalents 55 90 0 0 21,504 21,649 Unrealized rents & receivables 0 254 0 0 848 1,102 Deferred costs 5 336 0 0 3,697 4,038 Total Assets $ 14,347 22,747 591 10,026 430,845 $ 478,556 Secured notes payable $ 0 12,370 0 0 168,520 $ 180,890 Other liabilities 28 123 0 0 33,975 34,126 Capital - FRP 7,499 5,127 591 10,026 151,549 174,792 Capital - Third Parties 6,820 5,127 0 0 76,801 88,748 Total Liabilities and Capital $ 14,347 22,747 591 10,026 430,845 $ 478,556
income statements of the Bryant Street Partnerships	The income statements of the Bryant Street Partnerships Bryant Street Bryant Street Partnerships Partnerships Total JV Company Share Nine Months ended Nine Months ended September 30, September 30, 2021 2021 Revenues: Rental Revenue $ 1,153 $ 707 Revenue – other 190 117 Total Revenues 1,343 824 Cost of operations: Depreciation and amortization 1,482 909 Operating expenses 1,938 1,190 Property taxes 255 156 Total cost of operations 3,675 2,255 Total operating profit (2,332 ) (1,431 ) Interest expense (1,234 ) (1,803 ) Net loss before tax (3,566 ) (3,234 )

Consolidation of Riverfront I_2

Consolidation of Riverfront Investment Partners II, LLC. Riverfront Holdings II, LLC (Tables)	9 Months Ended
	Sep. 30, 2021
Consolidation Of Riverfront Investment Partners Ii Llc. Riverfront Holdings Ii Llc
Maren consolidation at stabilization	Maren consolidation at stabilization As of March 31, 2021 Riverfront Gain on Holdings II, LLC Remeasurement Revised Land $ 6,472 $ 22,858 $ 29,330 Building and improvements, net 87,269 23,531 110,800 Project under construction 258 — 258 Value of leases in place — 4,750 4,750 Cash 3,704 — 3,704 Cash held in escrow 336 — 336 Accounts receivable 707 — 707 Prepaid expenses 197 — 197 Total Assets $ 98,943 $ 51,139 $ 150,082 Long-term Debt $ 88,000 $ — $ 88,000 Amortizable debt costs (1,072 ) — (1,072 ) Other liabilities 441 — 441 Equity – FRP 7,026 37,174 44,200 Equity - MRP 4,548 13,965 18,513 Total Liabilities and Capital $ 98,943 $ 51,139 $ 150,082

Operating results and certain o

Operating results and certain other financial data for the Company’s business segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Revenues	$ 8,473	$ 6,098	$ 22,821	$ 17,730
Operating profit before corporate expenses	1,389	2,218	4,501	6,429
Corporate expenses	(657)	(637)	(2,486)	(2,850)
Operating profit	732	1,581	2,015	3,579
	414	46	1,785	142
Depreciation, depletion and amortization			9,772	4,572
Capital expenditures	4,710	2,033	11,555	3,200
Asset Management [Member]
Segment Reporting Information [Line Items]
Revenues	619	721	1,919	2,089
Operating profit before corporate expenses	169	200	528	700
Corporate expenses	(180)	(165)	(682)	(738)
Depreciation, depletion and amortization	137	137	408	529
Capital expenditures	100	233	318	787
Mining Properties [Member]
Segment Reporting Information [Line Items]
Revenues	2,249	2,507	7,198	7,094
Operating profit before corporate expenses	2,037	2,291	6,531	6,486
Corporate expenses	(69)	(53)	(258)	(234)
Depreciation, depletion and amortization	38	60	161	160
Capital expenditures	0	0	0	0
Development [Member]
Segment Reporting Information [Line Items]
Revenues	401	290	1,169	862
Operating profit before corporate expenses	(404)	(659)	(1,201)	(2,136)
Corporate expenses	(326)	(381)	(1,267)	(1,710)
Depreciation, depletion and amortization	53	53	159	160
Capital expenditures	4,237	1,754	10,443	2,371
Stabilized Joint Venture [Member]
Segment Reporting Information [Line Items]
Revenues	5,204	2,580	12,535	7,685
Operating profit before corporate expenses	(413)	386	(1,357)	1,379
Corporate expenses	(82)	(38)	(279)	(168)
Depreciation, depletion and amortization	3,568	1,188	8,899	3,557
Capital expenditures	373	46	794	42
Total Segments [Member]
Segment Reporting Information [Line Items]
Depreciation, depletion and amortization	$ 3,796	$ 1,438	$ 9,627	$ 4,406

Identifiable net assets (Detail

Identifiable net assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Assets	$ 678,753	$ 536,360
Investments available for sale	4,315	75,609
Cash	163,383	74,105
Asset Management [Member]
Segment Reporting Information [Line Items]
Assets	11,127	11,172
Mining Properties [Member]
Segment Reporting Information [Line Items]
Assets	37,205	37,387
Development [Member]
Segment Reporting Information [Line Items]
Assets	185,500	196,212
Stabilized Joint Venture [Member]
Segment Reporting Information [Line Items]
Assets	268,907	130,472
Unallocated Corporate Assets [Member]
Segment Reporting Information [Line Items]
Assets	$ 8,316	$ 11,403

Business Segments (Details Narr

Business Segments (Details Narrative)	3 Months Ended
	Sep. 30, 2021aSegmentsinteger
Segment Reporting Information [Line Items]
Number of reportable segments | Segments	4
Commercial properties | integer	2
Industrial acquisition count | integer	1
acres | a	15,000
Brooksville Joint Venture [Member]
Segment Reporting Information [Line Items]
acres | a	4,280

Related Party Transactions (Det

Related Party Transactions (Details Narrative) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Related Party Transactions [Abstract]
Related party allocation	$ 260,000	$ 290,000	$ 772,000	$ 870,000

Outstanding Debt (Details)

Outstanding Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
Fixed rate mortgage loans, 3.03% interest only, matures 4/1/2033	$ 178,371	$ 89,964
Credit agreement	0	0
Long-term debt	$ 178,334	$ 89,964

Long-Term Debt (Details Narrati

Long-Term Debt (Details Narrative) - USD ($)	1 Months Ended	3 Months Ended				9 Months Ended		12 Months Ended
	Mar. 31, 2021	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Dec. 31, 2017	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Mar. 19, 2021	Feb. 06, 2019	Nov. 17, 2017
Line of Credit Facility [Line Items]
Outstanding letters of credit		$ 506,000				$ 506,000
Principal sum		178,334,000				178,334,000		$ 89,964,000
Debt cost amortization		37,000		$ 113,000
Capitalized interest		999,000		$ 948,000		$ 2,892,000	$ 2,823,000
Dock 79 Eagle Bank [Member]
Line of Credit Facility [Line Items]
Loan term					120 months
Principal sum											$ 90,000,000
Fixed interest rate											4.125%
Prepayment penalty			$ 900,000
Dock 79 Loan [Member]
Line of Credit Facility [Line Items]
Principal sum									$ 92,070,000
Fixed interest rate									3.03%
Transfer terms	Either loan may be prepaid subsequent to April 1, 2024, subject to yield maintenance premiums. Either loan may be transferred to a qualified buyer as part of a one-time sale subject to a 60% loan to value, minimum of 7.5% debt yield and a 0.75% transfer fee
Maren [Member]
Line of Credit Facility [Line Items]
Principal sum									$ 88,000,000
Fixed interest rate									3.03%
Transfer terms	Either loan may be prepaid subsequent to April 1, 2024, subject to yield maintenance premiums. Either loan may be transferred to a qualified buyer as part of a one-time sale subject to a 60% loan to value, minimum of 7.5% debt yield and a 0.75% transfer fee
Wells Fargo Level I [Member]
Line of Credit Facility [Line Items]
Interest rate spread						1.50%
Commitment fee						0.25%
Wells Fargo Level I I [Member]
Line of Credit Facility [Line Items]
Interest rate spread						1.25%
Commitment fee						0.20%
Wells Fargo Level I I I [Member]
Line of Credit Facility [Line Items]
Interest rate spread						1.00%
Commitment fee						0.15%
Wells Fargo [Member]
Line of Credit Facility [Line Items]
Loan term								5 years
Maximum facility amount										$ 20,000,000
Revolver outstanding		0				$ 0
Outstanding letters of credit		506,000				506,000
Available for borrowing		$ 19,494,000				$ 19,494,000
Letter of credit fee						1.00%
Applicable interest rate		1.08238%				1.08238%
Dividend limit		$ 228,000,000				$ 228,000,000
Covenant compliance						all

Basic and Diluted Earnings Per

Basic and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Weighted average common shares outstanding   during the period – shares used for basic   earnings per common share	9,363	9,517	9,352	9,646
Common shares issuable under share-based payment plans which are potentially dilutive	36	28	38	35
Common shares used for diluted earnings per common share	9,399	9,545	9,390	9,681
Net income attributable to the Company	$ 352	$ 5,455	$ 28,807	$ 11,222
Earnings per common share:
-basic	$ 0.04	$ 0.57	$ 3.08	$ 1.16
-diluted	$ 0.04	$ 0.57	$ 3.07	$ 1.16

Earnings per Share (Details Nar

Earnings per Share (Details Narrative) - $ / shares	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Antidilutive shares excluded	74,065	19,950	53,545
Shares repurchased		6,004	379,809
Average cost of shares repurchased		$ 43.95	$ 41.30

Stock Compensation Expense (Det

Stock Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation	$ 152	$ 70	$ 1,006	$ 1,241
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation	17	24	52	71
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation	135	46	404	140
Employee Grant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation	0	0	50	530
Director Stock Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation			$ 500	$ 500

Summary of changes in outstandi

Summary of changes in outstanding options (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercisable remaining term	4 years 9 months 17 days
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, shares	104,755	120,089
Options outstanding, weighted avg exercise price	$ 37.93	$ 35.33
Options outstanding remaining term	5 years 1 month 4 days	5 years 3 months 18 days
Options outstanding, weighted avg grant date fair value	$ 1,416	$ 1,531
Options exercised, shares	(15,334)
Options exercised, weighted avg exercise price	$ 17.54
Options exercised, weighted avg grant date fair value	$ (115)
Options exercisable, shares	92,407
Options exercisable, weighted avg exercise price	$ 36.87
Options exercisable, weighted avg grant date fair value	$ 1,212
Options vested, shares	0
Options vested, weighted avg grant date fair value	$ 0

Summary of changes in restricte

Summary of changes in restricted stock awards (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Sep. 30, 2021	Dec. 31, 2020
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock			48,298	20,520
Restricted stock			$ 45.87	$ 46.30
Restricted stock			3 years 3 months 19 days	3 years 4 months 25 days
Restricted stock			$ 2,215	$ 950
Time Based Awards Granted [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock	8,896		8,896
Restricted stock			$ 45.55
Restricted stock			$ 405
Performance Based Awards Granted [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock	18,882	20,520	18,882
Restricted stock			$ 45.55
Restricted stock			$ 860

Stock-Based Compensation Plan_2

Stock-Based Compensation Plans (Details Narrative)	3 Months Ended		9 Months Ended
	Mar. 31, 2021shares	Mar. 31, 2020shares	Sep. 30, 2021USD ($)integer$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of plans | integer			2
Expiration period			10 years
Vesting rights			exercisable immediately or become exercisable in cumulative installments of 20% or 25%
Dividend yield			0.00%
Minimum volatility			29.00%
Maximum volatility			41.00%
Risk-free interest rate minimum			1.00%
Risk-free interest rate maximum			2.90%
Expected life			3 years
Expected life			7 years
Shares available | shares			397,747
Intrinsic value			$ 1,761,000
Intrinsic value			$ 1,884,000
Closing price | $ / shares			$ 55.92
Gains			$ 602,000
Time Based Awards Granted [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted | shares	8,896		8,896
Vesting period	4 years
Performance Based Awards Granted [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted | shares	18,882	20,520	18,882
Vesting period	5 years	5 years
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock grants | shares	1,098	11,448
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost			$ 146,000
Recognition period			2 years 1 month 5 days
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost			$ 1,515,000
Recognition period			3 years 7 months 6 days

Contingent Liabilities (Details

Contingent Liabilities (Details Narrative)	Sep. 30, 2021USD ($)
Commitments and Contingencies Disclosure [Abstract]
Letters of credit outstanding	$ 506,000

Concentrations (Details Narrati

Concentrations (Details Narrative) $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)integer	Dec. 31, 2020USD ($)
Concentration Risk [Line Items]
Number of minimg tenants | integer	5
Accounts receivable	$ 991	$ 923
Mining Top Customer [Member]
Concentration Risk [Line Items]
Top lessee rent percent	23.80%
Accounts receivable	$ 294

Fair Value Measurements (Detail

Fair Value Measurements (Details Narrative) $ in Thousands	Sep. 30, 2021USD ($)integer	Dec. 31, 2020USD ($)	Sep. 30, 2020USD ($)
Fair Value Disclosures [Abstract]
Number of corporate bonds | integer	2
Unrealized gain	$ 16
Amortized cost of investments	4,299
Carrying amount of bonds	4,315	$ 75,609
Fair value of bonds	4,315
Carrying amount of long-term debt	178,371		$ 89,027
Fair value of long-term debt	$ 173,634		$ 95,138

Investments in unconsolidated j

Investments in unconsolidated joint ventures (Details) - USD ($)		3 Months Ended			9 Months Ended			12 Months Ended
		Sep. 30, 2021		Sep. 30, 2020	Sep. 30, 2021		Sep. 30, 2020	Dec. 31, 2020	Mar. 31, 2021	May 04, 2018
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage									70.41%
Total investments		$ 145,975,000			$ 145,975,000			$ 167,071,000
Total assets of the partnership		678,753,000			678,753,000			536,360,000
Partnership profit (loss)		(113,000)		$ 5,271,000	41,043,000		$ 10,747,000
Share of profit		(1,244,000)		$ (1,788,000)	(3,997,000)		$ (3,773,000)
Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership		$ 454,424,000			454,424,000			478,556,000
Partnership profit (loss)					(5,605,000)			(5,925,000)
Real Estate Partnership Net Income Loss [Member]
Schedule of Equity Method Investments [Line Items]
Share of profit					$ (3,997,000)			$ (5,690,000)
Brooksville Quarry L L C [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		50.00%			50.00%			50.00%
Total investments		$ 7,463,000			$ 7,463,000			$ 7,499,000
Partnership profit (loss)					(66,000)			(78,000)
Share of profit					(32,000)			(39,000)
Brooksville Quarry L L C [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership		$ 14,332,000			$ 14,332,000			$ 14,347,000
B C F R P Realty L L C [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		50.00%			50.00%			50.00%
Total investments		$ 5,454,000			$ 5,454,000			$ 5,184,000
Partnership profit (loss)					(227,000)			(411,000)
Share of profit					(113,000)			(207,000)
B C F R P Realty L L C [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership		22,612,000			22,612,000			$ 22,747,000
Riverfront Holdings I I L L C [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage								80.00%		80.00%
Total investments		0	[1]		0	[1]		$ 23,533,000
Total assets of the partnership									$ 150,082,000
Partnership profit (loss)	[1]				(760,000)			(4,573,000)
Share of profit	[1]				(628,000)			(3,907,000)
Riverfront Holdings I I L L C [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership		$ 0	[1]		$ 0	[1]		$ 108,538,000
Bryant Street Partnerships [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		61.36%			61.36%			61.36%
Total investments		$ 59,899,000			$ 59,899,000			$ 60,159,000
Partnership profit (loss)					(3,566,000)			(836,000)
Share of profit	[1]				(3,234,000)			(2,130,000)
Preferred interest					674,000			1,146,000
Amortization of guarantee liability					354,000			471,000
Bryant Street Partnerships [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership		201,144,000			201,144,000			173,814,000
Hyde Park [Member]
Schedule of Equity Method Investments [Line Items]
Total investments		0			0			591,000
Partnership profit (loss)					0			0
Share of profit					0			0
Hyde Park [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership		$ 0			$ 0			$ 591,000
D S T Hickory Creek [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		26.65%			26.65%			26.65%
Total investments		$ 6,000,000			$ 6,000,000			$ 6,000,000
Partnership profit (loss)					(325,000)			(367,000)
Share of profit					257,000			339,000
D S T Hickory Creek [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership		46,560,000			46,560,000			47,761,000
Amber Ridge Loan [Member]
Schedule of Equity Method Investments [Line Items]
Total investments		12,471,000			12,471,000			10,026,000
Partnership profit (loss)					0			0
Share of profit					0			0
Amber Ridge Loan [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership		$ 12,471,000			$ 12,471,000			$ 10,026,000
Half St Owner L L C [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		61.37%			61.37%			61.37%
Total investments		$ 38,456,000			$ 38,456,000			$ 37,875,000
Partnership profit (loss)					19,000			158,000
Share of profit					25,000			164,000
Half St Owner L L C [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership		$ 76,829,000			$ 76,829,000			$ 54,275,000
Greenville Woodfield Partnerships [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		40.00%			40.00%			40.00%
Total investments		$ 16,232,000			$ 16,232,000			$ 16,204,000
Partnership profit (loss)					(680,000)			182,000
Share of profit					(272,000)			90,000
Greenville Woodfield Partnerships [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership		$ 80,476,000			$ 80,476,000			$ 46,457,000
[1]	Riverfront Holdings II, LLC was consolidated on March 31, 2021. Bryant Street Partnerships includes $ 674,000 1,146,000 354,000 471,000

Investments in Apartment_Mixed

Investments in Apartment/Mixed Use Joint Ventures as of September 30, 2021 (Details) - USD ($) $ in Thousands	Sep. 30, 2021		Mar. 31, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	$ 444,485			$ 451,767
Cash and cash equivalents	2,752			21,649
Unrealized rents & receivables	3,374			1,102
Deferred costs	3,813			4,038
Total Assets	678,753			536,360
Secured notes payable	193,433			180,890
Other liabilities	29,137			34,126
Capital – Third Parties	396,990			367,654
Total Liabilities and Capital	678,753			536,360
Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	454,424			478,556
Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	141,147			174,792
Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital – Third Parties	90,707			88,748
Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	454,424			478,556
Riverfront Holdings I I L L C [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	0			105,737
Cash and cash equivalents	0			2,626
Unrealized rents & receivables	0			13
Deferred costs	0			162
Total Assets			$ 150,082
Secured notes payable	0			64,982
Other liabilities	0			4,189
Capital - FRP			18,513
Capital – Third Parties			44,200
Total Liabilities and Capital			$ 150,082
Riverfront Holdings I I L L C [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	0	[1]		108,538
Riverfront Holdings I I L L C [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	0			34,667
Riverfront Holdings I I L L C [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital – Third Parties	0			4,700
Riverfront Holdings I I L L C [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	0			108,538
Bryant Street Partnerships [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	198,039			173,560
Cash and cash equivalents	848			111
Unrealized rents & receivables	1,892			58
Deferred costs	365			85
Secured notes payable	116,705			72,471
Other liabilities	7,620			22,952
Bryant Street Partnerships [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	201,144			173,814
Bryant Street Partnerships [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	58,014			58,559
Bryant Street Partnerships [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital – Third Parties	18,805			19,832
Bryant Street Partnerships [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	201,144			173,814
D S T Hickory Creek [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	44,224			45,379
Cash and cash equivalents	978			1,202
Unrealized rents & receivables	1,004			775
Deferred costs	354			405
Secured notes payable	29,325			29,291
Other liabilities	162			107
D S T Hickory Creek [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	46,560			47,761
D S T Hickory Creek [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	4,550			4,894
D S T Hickory Creek [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital – Third Parties	12,523			13,469
D S T Hickory Creek [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	46,560			47,761
Half St Owner L L C [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	73,580			37,452
Cash and cash equivalents	439			14,011
Unrealized rents & receivables	0			2
Deferred costs	2,810			2,810
Secured notes payable	0			0
Other liabilities	15,766			1,953
Half St Owner L L C [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	76,829			54,275
Half St Owner L L C [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	37,483			37,466
Half St Owner L L C [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital – Third Parties	23,580			14,856
Half St Owner L L C [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	76,829			54,275
Greenville Woodfield Partnerships [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	80,261			42,668
Cash and cash equivalents	207			3,554
Unrealized rents & receivables	8			0
Deferred costs	0			235
Secured notes payable	35,879			1,776
Other liabilities	5,370			4,774
Greenville Woodfield Partnerships [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	80,476			46,457
Greenville Woodfield Partnerships [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	15,691			15,963
Greenville Woodfield Partnerships [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital – Third Parties	23,536			23,944
Greenville Woodfield Partnerships [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	80,476			46,457
Apartment Mixed Use [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	396,104			404,796
Cash and cash equivalents	2,472			21,504
Unrealized rents & receivables	2,904			848
Deferred costs	3,529			3,697
Secured notes payable	181,909			168,520
Other liabilities	28,918			33,975
Apartment Mixed Use [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	405,009			430,845
Apartment Mixed Use [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	115,738			151,549
Apartment Mixed Use [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital – Third Parties	78,444			76,801
Apartment Mixed Use [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	$ 405,009			$ 430,845
[1]	Riverfront Holdings II, LLC was consolidated on March 31, 2021. Bryant Street Partnerships includes $ 674,000 1,146,000 354,000 471,000

Investments in Joint Ventures a

Investments in Joint Ventures as of September 30, 2021 (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net.	$ 444,485	$ 451,767
Cash and cash equivalents	2,752	21,649
Unrealized rents & receivables	3,374	1,102
Deferred costs	3,813	4,038
Total Assets	678,753	536,360
Secured notes payable	193,433	180,890
Other liabilities	29,137	34,126
Capital - Third Parties	396,990	367,654
Total Liabilities and Capital	678,753	536,360
Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	454,424	478,556
Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	141,147	174,792
Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third Parties	90,707	88,748
Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	454,424	478,556
Brooksville Quarry L L C [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net.	14,283	14,287
Cash and cash equivalents	49	55
Unrealized rents & receivables	0	0
Deferred costs	0	5
Secured notes payable	0	0
Other liabilities	81	28
Brooksville Quarry L L C [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	14,332	14,347
Brooksville Quarry L L C [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	7,463	7,499
Brooksville Quarry L L C [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third Parties	6,788	6,820
Brooksville Quarry L L C [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	14,332	14,347
B C F R P Realty L L C [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net.	21,627	22,067
Cash and cash equivalents	231	90
Unrealized rents & receivables	470	254
Deferred costs	284	336
Secured notes payable	11,524	12,370
Other liabilities	138	123
B C F R P Realty L L C [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	22,612	22,747
B C F R P Realty L L C [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	5,475	5,127
B C F R P Realty L L C [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third Parties	5,475	5,127
B C F R P Realty L L C [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	22,612	22,747
Hyde Park [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net.	0	591
Cash and cash equivalents	0	0
Unrealized rents & receivables	0	0
Deferred costs	0	0
Secured notes payable	0	0
Other liabilities	0	0
Hyde Park [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	0	591
Hyde Park [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	0	591
Hyde Park [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third Parties	0	0
Hyde Park [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	0	591
Amber Ridge Loan [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net.	12,471	10,026
Cash and cash equivalents	0	0
Unrealized rents & receivables	0	0
Deferred costs	0	0
Secured notes payable	0	0
Other liabilities	0	0
Amber Ridge Loan [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	12,471	10,026
Amber Ridge Loan [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	12,471	10,026
Amber Ridge Loan [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third Parties	0	0
Amber Ridge Loan [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	12,471	10,026
Apartment Mixed Use [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net.	396,104	404,796
Cash and cash equivalents	2,472	21,504
Unrealized rents & receivables	2,904	848
Deferred costs	3,529	3,697
Secured notes payable	181,909	168,520
Other liabilities	28,918	33,975
Apartment Mixed Use [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	405,009	430,845
Apartment Mixed Use [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	115,738	151,549
Apartment Mixed Use [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third Parties	78,444	76,801
Apartment Mixed Use [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	$ 405,009	$ 430,845

Investments in Apartment_Mixe_2

Investments in Apartment/Mixed Use Joint Ventures as of December 31, 2020 (Details) - USD ($) $ in Thousands	Sep. 30, 2021		Mar. 31, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	$ 444,485			$ 451,767
Cash and cash equivalents	2,752			21,649
Unrealized rents & receivables	3,374			1,102
Deferred costs	3,813			4,038
Total Assets	678,753			536,360
Secured notes payable	193,433			180,890
Other liabilities	29,137			34,126
Capital - Third Parties	396,990			367,654
Total Liabilities and Capital	678,753			536,360
Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	454,424			478,556
Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	141,147			174,792
Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third Parties	90,707			88,748
Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	454,424			478,556
Riverfront Holdings I I L L C [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	0			105,737
Cash and cash equivalents	0			2,626
Unrealized rents & receivables	0			13
Deferred costs	0			162
Total Assets			$ 150,082
Secured notes payable	0			64,982
Other liabilities	0			4,189
Capital - FRP			18,513
Capital - Third Parties			44,200
Total Liabilities and Capital			$ 150,082
Riverfront Holdings I I L L C [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	0	[1]		108,538
Riverfront Holdings I I L L C [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	0			34,667
Riverfront Holdings I I L L C [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third Parties	0			4,700
Riverfront Holdings I I L L C [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	0			108,538
Bryant Street Partnerships [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	198,039			173,560
Cash and cash equivalents	848			111
Unrealized rents & receivables	1,892			58
Deferred costs	365			85
Secured notes payable	116,705			72,471
Other liabilities	7,620			22,952
Bryant Street Partnerships [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	201,144			173,814
Bryant Street Partnerships [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	58,014			58,559
Bryant Street Partnerships [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third Parties	18,805			19,832
Bryant Street Partnerships [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	201,144			173,814
D S T Hickory Creek [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	44,224			45,379
Cash and cash equivalents	978			1,202
Unrealized rents & receivables	1,004			775
Deferred costs	354			405
Secured notes payable	29,325			29,291
Other liabilities	162			107
D S T Hickory Creek [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	46,560			47,761
D S T Hickory Creek [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	4,550			4,894
D S T Hickory Creek [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third Parties	12,523			13,469
D S T Hickory Creek [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	46,560			47,761
Half St Owner L L C [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	73,580			37,452
Cash and cash equivalents	439			14,011
Unrealized rents & receivables	0			2
Deferred costs	2,810			2,810
Secured notes payable	0			0
Other liabilities	15,766			1,953
Half St Owner L L C [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	76,829			54,275
Half St Owner L L C [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	37,483			37,466
Half St Owner L L C [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third Parties	23,580			14,856
Half St Owner L L C [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	76,829			54,275
Greenville Woodfield Partnerships [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	80,261			42,668
Cash and cash equivalents	207			3,554
Unrealized rents & receivables	8			0
Deferred costs	0			235
Secured notes payable	35,879			1,776
Other liabilities	5,370			4,774
Greenville Woodfield Partnerships [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	80,476			46,457
Greenville Woodfield Partnerships [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	15,691			15,963
Greenville Woodfield Partnerships [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third Parties	23,536			23,944
Greenville Woodfield Partnerships [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	80,476			46,457
Apartment Mixed Use [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	396,104			404,796
Cash and cash equivalents	2,472			21,504
Unrealized rents & receivables	2,904			848
Deferred costs	3,529			3,697
Secured notes payable	181,909			168,520
Other liabilities	28,918			33,975
Apartment Mixed Use [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	405,009			430,845
Apartment Mixed Use [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	115,738			151,549
Apartment Mixed Use [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third Parties	78,444			76,801
Apartment Mixed Use [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	$ 405,009			$ 430,845
[1]	Riverfront Holdings II, LLC was consolidated on March 31, 2021. Bryant Street Partnerships includes $ 674,000 1,146,000 354,000 471,000

Investments in Joint Ventures_2

Investments in Joint Ventures as of December 31, 2020 (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net.	$ 444,485	$ 451,767
Cash and cash equivalents	2,752	21,649
Unrealized rents & receivables	3,374	1,102
Deferred costs	3,813	4,038
Total Assets	678,753	536,360
Secured notes payable	193,433	180,890
Other liabilities	29,137	34,126
Capital - Third Parties	396,990	367,654
Total Liabilities and Capital	678,753	536,360
Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	454,424	478,556
Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	141,147	174,792
Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third Parties	90,707	88,748
Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	454,424	478,556
Brooksville Quarry L L C [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net.	14,283	14,287
Cash and cash equivalents	49	55
Unrealized rents & receivables	0	0
Deferred costs	0	5
Secured notes payable	0	0
Other liabilities	81	28
Brooksville Quarry L L C [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	14,332	14,347
Brooksville Quarry L L C [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	7,463	7,499
Brooksville Quarry L L C [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third Parties	6,788	6,820
Brooksville Quarry L L C [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	14,332	14,347
B C F R P Realty L L C [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net.	21,627	22,067
Cash and cash equivalents	231	90
Unrealized rents & receivables	470	254
Deferred costs	284	336
Secured notes payable	11,524	12,370
Other liabilities	138	123
B C F R P Realty L L C [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	22,612	22,747
B C F R P Realty L L C [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	5,475	5,127
B C F R P Realty L L C [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third Parties	5,475	5,127
B C F R P Realty L L C [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	22,612	22,747
Hyde Park [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net.	0	591
Cash and cash equivalents	0	0
Unrealized rents & receivables	0	0
Deferred costs	0	0
Secured notes payable	0	0
Other liabilities	0	0
Hyde Park [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	0	591
Hyde Park [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	0	591
Hyde Park [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third Parties	0	0
Hyde Park [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	0	591
Amber Ridge Loan [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net.	12,471	10,026
Cash and cash equivalents	0	0
Unrealized rents & receivables	0	0
Deferred costs	0	0
Secured notes payable	0	0
Other liabilities	0	0
Amber Ridge Loan [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	12,471	10,026
Amber Ridge Loan [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	12,471	10,026
Amber Ridge Loan [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third Parties	0	0
Amber Ridge Loan [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	12,471	10,026
Apartment Mixed Use [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net.	396,104	404,796
Cash and cash equivalents	2,472	21,504
Unrealized rents & receivables	2,904	848
Deferred costs	3,529	3,697
Secured notes payable	181,909	168,520
Other liabilities	28,918	33,975
Apartment Mixed Use [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total Assets	405,009	430,845
Apartment Mixed Use [Member] | Real Estate Partnership F R P [Member]
Schedule of Equity Method Investments [Line Items]
Capital - FRP	115,738	151,549
Apartment Mixed Use [Member] | Real Estate Partnership Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third Parties	78,444	76,801
Apartment Mixed Use [Member] | Real Estate Partnership Total Liabilities And Capital [Member]
Schedule of Equity Method Investments [Line Items]
Total Liabilities and Capital	$ 405,009	$ 430,845

income statements of the Bryant

income statements of the Bryant Street Partnerships (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Schedule of Equity Method Investments [Line Items]
Rental Revenue	$ 6,224	$ 3,591	$ 15,623	$ 10,636
Total Revenues	8,473	6,098	22,821	17,730
Property taxes	986	706	2,764	2,089
Total cost of operations	1,557	892	3,792	2,598
Total operating profit	732	1,581	2,015	3,579
Interest expense	(414)	(46)	(1,785)	(142)
Net loss before tax	$ 17	$ 7,293	51,543	$ 14,908
Bryant Street Partnerships [Member]
Schedule of Equity Method Investments [Line Items]
Rental Revenue			707
Revenue – other			117
Total Revenues			824
Depreciation and amortization			909
Operating expenses			1,190
Property taxes			156
Total cost of operations			2,255
Total operating profit			(1,431)
Interest expense			(1,803)
Net loss before tax			(3,234)
Bryant Street Partnerships [Member]
Schedule of Equity Method Investments [Line Items]
Rental Revenue			1,153
Revenue – other			190
Total Revenues			1,343
Depreciation and amortization			1,482
Operating expenses			1,938
Property taxes			255
Total cost of operations			3,675
Total operating profit			(2,332)
Interest expense			(1,234)
Net loss before tax			$ (3,566)

Investments in Joint Ventures_3

Investments in Joint Ventures (Details Narrative) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Equity Method Investments and Joint Ventures [Abstract]
Difference between carrying value and underlying equity	$ 4,828,000
Retained earnings (accumulated deficit)	$ (7,660,000)	$ (8,278,000)

Maren consolidation at stabiliz

Maren consolidation at stabilization (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Condensed Cash Flow Statements, Captions [Line Items]
Land	$ 123,397		$ 91,744
Project under construction	13,799		4,879
Accounts receivable	991		923
Assets	678,753		536,360
Long-term Debt	178,334		89,964
Other liabilities	1,886		1,886
Equity – FRP	396,990		367,654
Total Liabilities and Capital	$ 678,753		$ 536,360
Riverfront Holdings I I L L C [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Land		$ 29,330
Building and improvements, net		110,800
Project under construction		258
Value of leases in place		4,750
Cash		3,704
Cash held in escrow		336
Accounts receivable		707
Prepaid expenses		197
Assets		150,082
Long-term Debt		88,000
Amortizable debt costs		(1,072)
Other liabilities		441
Equity – FRP		44,200
Equity - MRP		18,513
Total Liabilities and Capital		150,082
Riverfront Holdings I I L L C [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Land		6,472
Building and improvements, net		87,269
Project under construction		258
Value of leases in place		0
Cash		3,704
Cash held in escrow		336
Accounts receivable		707
Prepaid expenses		197
Assets		98,943
Long-term Debt		88,000
Amortizable debt costs		(1,072)
Other liabilities		441
Equity – FRP		7,026
Equity - MRP		4,548
Total Liabilities and Capital		98,943
Remeasurement Gain [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Land		22,858
Building and improvements, net		23,531
Project under construction		0
Value of leases in place		4,750
Cash		0
Cash held in escrow		0
Accounts receivable		0
Prepaid expenses		0
Assets		51,139
Long-term Debt		0
Amortizable debt costs		0
Other liabilities		0
Equity – FRP		37,174
Equity - MRP		13,965
Total Liabilities and Capital		$ 51,139

Consolidation of Riverfront I_3

Consolidation of Riverfront Investment Partners II, LLC. Riverfront Holdings II, LLC (Details Narrative)	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2021USD ($)	Mar. 31, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2020	May 04, 2018integer
Schedule of Equity Method Investments [Line Items]
Cash contributed				$ 10,031,000	$ 12,297,000
Ownership basis		70.41%
Remeasurement gain, MRP	$ 0	$ 51,139,000	$ 0	$ 51,139,000	$ 0
M R P Realty [Member]
Schedule of Equity Method Investments [Line Items]
MRP Contributions						$ 5,600,000
MRP Development fee						725,000
Remeasurement gain, MRP		$ 13,965,000
Riverfront Holdings I I L L C [Member]
Schedule of Equity Method Investments [Line Items]
Square feet | integer								250,000
Number of residential units | integer								264
Retail square feet | integer								6,937
Value of land contributed						16,300,000
Cost basis of land contributed						4,600,000
Cash contributed						6,200,000
Ownership basis							80.00%	80.00%
Preferred equity committed						$ 13,750,000
Interest rate								7.50%
Stabilization		90.00%

Subsequent Event (Details Narra

Subsequent Event (Details Narrative) - Subsequent Event [Member]	Oct. 08, 2021USD ($)integer
Subsequent Event [Line Items]
Future equity investment loan commitment | $	$ 31,100,000
Interest rate	10.00%
Residential lots | integer	344