Schedule III (Consolidated) - Real Estate and Accumulated Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Schedule III, Real Estate
Encumbrances	$ 161,418
Initial Cost to Company, Land & Improvements	172,929
Initial Cost to Company, Buildings & Improvements	216,610
Costs Capitalized Subsequent to Acquisition or Construction	238,074
Land & Land Improvements	404,518
Buildings and Improvements	223,095
Total	627,613	$ 505,032	$ 418,494	$ 404,376
Accumulated Depreciation	75,960
Aggregate cost of real estate owned for federal income tax purposes	590,300
Residential developments
Schedule III, Real Estate
Encumbrances	1,976
Initial Cost to Company, Land & Improvements	42,248
Initial Cost to Company, Buildings & Improvements	14,846
Costs Capitalized Subsequent to Acquisition or Construction	73,071
Land & Land Improvements	122,826
Buildings and Improvements	7,339
Total	130,165
Accumulated Depreciation	$ 4,744
Residential developments | Minimum
Schedule III, Real Estate
Depreciation Life (in years)	5 years
Residential developments | Maximum
Schedule III, Real Estate
Depreciation Life (in years)	25 years
Water Color Hospitality
Schedule III, Real Estate
Initial Cost to Company, Land & Improvements	$ 1,137
Initial Cost to Company, Buildings & Improvements	13,688
Costs Capitalized Subsequent to Acquisition or Construction	11,387
Land & Land Improvements	2,216
Buildings and Improvements	23,996
Total	26,212
Accumulated Depreciation	$ 11,194
Water Color Hospitality | Minimum
Schedule III, Real Estate
Depreciation Life (in years)	5 years
Water Color Hospitality | Maximum
Schedule III, Real Estate
Depreciation Life (in years)	40 years
Pier Park Hospitality
Schedule III, Real Estate
Initial Cost to Company, Land & Improvements	$ 1,438
Costs Capitalized Subsequent to Acquisition or Construction	9,543
Land & Land Improvements	10,981
Total	10,981
30A Hospitality
Schedule III, Real Estate
Initial Cost to Company, Land & Improvements	2,143
Costs Capitalized Subsequent to Acquisition or Construction	1,580
Land & Land Improvements	3,723
Total	3,723
Airport Hospitality
Schedule III, Real Estate
Encumbrances	3,548
Costs Capitalized Subsequent to Acquisition or Construction	13,424
Land & Land Improvements	13,424
Total	13,424
Breakfast Point Hospitality
Schedule III, Real Estate
Costs Capitalized Subsequent to Acquisition or Construction	5,848
Land & Land Improvements	5,848
Total	5,848
The Clubs by JOE
Schedule III, Real Estate
Initial Cost to Company, Land & Improvements	34,648
Initial Cost to Company, Buildings & Improvements	20,132
Costs Capitalized Subsequent to Acquisition or Construction	10,477
Land & Land Improvements	46,372
Buildings and Improvements	18,885
Total	65,257
Accumulated Depreciation	$ 23,214
The Clubs by JOE | Minimum
Schedule III, Real Estate
Depreciation Life (in years)	10 years
The Clubs by JOE | Maximum
Schedule III, Real Estate
Depreciation Life (in years)	25 years
Marinas
Schedule III, Real Estate
Initial Cost to Company, Land & Improvements	$ 5,350
Initial Cost to Company, Buildings & Improvements	2,546
Costs Capitalized Subsequent to Acquisition or Construction	4,097
Land & Land Improvements	9,438
Buildings and Improvements	2,555
Total	11,993
Accumulated Depreciation	$ 1,723
Marinas | Minimum
Schedule III, Real Estate
Depreciation Life (in years)	15 years
Marinas | Maximum
Schedule III, Real Estate
Depreciation Life (in years)	25 years
Other Hospitality
Schedule III, Real Estate
Encumbrances	$ 4,047
Initial Cost to Company, Land & Improvements	1,558
Initial Cost to Company, Buildings & Improvements	12,374
Costs Capitalized Subsequent to Acquisition or Construction	3,430
Land & Land Improvements	4,898
Buildings and Improvements	12,464
Total	17,362
Accumulated Depreciation	$ 2,443
Other Hospitality | Minimum
Schedule III, Real Estate
Depreciation Life (in years)	5 years
Other Hospitality | Maximum
Schedule III, Real Estate
Depreciation Life (in years)	39 years
Pier Park North JV
Schedule III, Real Estate
Encumbrances	$ 44,568
Initial Cost to Company, Land & Improvements	13,711
Initial Cost to Company, Buildings & Improvements	35,243
Costs Capitalized Subsequent to Acquisition or Construction	3,115
Land & Land Improvements	13,711
Buildings and Improvements	38,358
Total	52,069
Accumulated Depreciation	$ 11,086
Pier Park North JV | Minimum
Schedule III, Real Estate
Depreciation Life (in years)	15 years
Pier Park North JV | Maximum
Schedule III, Real Estate
Depreciation Life (in years)	39 years
Town centers
Schedule III, Real Estate
Initial Cost to Company, Buildings & Improvements	$ 12,278
Costs Capitalized Subsequent to Acquisition or Construction	1,965
Land & Land Improvements	335
Buildings and Improvements	13,908
Total	14,243
Accumulated Depreciation	$ 10,374
Town centers | Minimum
Schedule III, Real Estate
Depreciation Life (in years)	10 years
Town centers | Maximum
Schedule III, Real Estate
Depreciation Life (in years)	25 years
VentureCrossings
Schedule III, Real Estate
Initial Cost to Company, Land & Improvements	$ 6,419
Initial Cost to Company, Buildings & Improvements	29,824
Costs Capitalized Subsequent to Acquisition or Construction	(2,032)
Land & Land Improvements	4,937
Buildings and Improvements	29,274
Total	34,211
Accumulated Depreciation	$ 5,428
VentureCrossings | Minimum
Schedule III, Real Estate
Depreciation Life (in years)	10 years
VentureCrossings | Maximum
Schedule III, Real Estate
Depreciation Life (in years)	39 years
Watersound Origins Crossings
Schedule III, Real Estate
Encumbrances	$ 27,179
Initial Cost to Company, Land & Improvements	739
Initial Cost to Company, Buildings & Improvements	3,457
Costs Capitalized Subsequent to Acquisition or Construction	29,129
Land & Land Improvements	29,868
Buildings and Improvements	3,457
Total	33,325
Pier Park Crossings
Schedule III, Real Estate
Encumbrances	36,084
Initial Cost to Company, Land & Improvements	8,228
Initial Cost to Company, Buildings & Improvements	27,820
Land & Land Improvements	8,228
Buildings and Improvements	27,820
Total	36,048
Accumulated Depreciation	$ 1,396
Pier Park Crossings | Minimum
Schedule III, Real Estate
Depreciation Life (in years)	7 years
Pier Park Crossings | Maximum
Schedule III, Real Estate
Depreciation Life (in years)	39 years
Pier Park Crossings Phase II
Schedule III, Real Estate
Encumbrances	$ 15,921
Initial Cost to Company, Land & Improvements	3,528
Initial Cost to Company, Buildings & Improvements	15,389
Costs Capitalized Subsequent to Acquisition or Construction	158
Land & Land Improvements	3,686
Buildings and Improvements	15,389
Total	19,075
Accumulated Depreciation	$ 46
Pier Park Crossings Phase II | Minimum
Schedule III, Real Estate
Depreciation Life (in years)	7 years
Pier Park Crossings Phase II | Maximum
Schedule III, Real Estate
Depreciation Life (in years)	39 years
Watercrest
Schedule III, Real Estate
Encumbrances	$ 18,066
Initial Cost to Company, Land & Improvements	894
Costs Capitalized Subsequent to Acquisition or Construction	27,266
Land & Land Improvements	28,160
Total	28,160
Self-Storage
Schedule III, Real Estate
Initial Cost to Company, Land & Improvements	440
Costs Capitalized Subsequent to Acquisition or Construction	2,754
Land & Land Improvements	3,194
Total	3,194
Beckrich
Schedule III, Real Estate
Encumbrances	5,421
Initial Cost to Company, Land & Improvements	2,200
Initial Cost to Company, Buildings & Improvements	13,298
Costs Capitalized Subsequent to Acquisition or Construction	183
Land & Land Improvements	2,223
Buildings and Improvements	13,458
Total	15,681
Accumulated Depreciation	$ 741
Beckrich | Minimum
Schedule III, Real Estate
Depreciation Life (in years)	5 years
Beckrich | Maximum
Schedule III, Real Estate
Depreciation Life (in years)	39 years
Watersound Origins
Schedule III, Real Estate
Initial Cost to Company, Land & Improvements	$ 1,216
Initial Cost to Company, Buildings & Improvements	1,835
Costs Capitalized Subsequent to Acquisition or Construction	40
Land & Land Improvements	1,256
Buildings and Improvements	1,835
Total	3,091
Accumulated Depreciation	$ 102
Watersound Origins | Minimum
Schedule III, Real Estate
Depreciation Life (in years)	15 years
Watersound Origins | Maximum
Schedule III, Real Estate
Depreciation Life (in years)	25 years
Other Commercial leasing
Schedule III, Real Estate
Encumbrances	$ 2,792
Initial Cost to Company, Land & Improvements	4,674
Initial Cost to Company, Buildings & Improvements	12,122
Costs Capitalized Subsequent to Acquisition or Construction	436
Land & Land Improvements	4,717
Buildings and Improvements	12,515
Total	17,232
Accumulated Depreciation	$ 1,403
Other Commercial leasing | Minimum
Schedule III, Real Estate
Depreciation Life (in years)	10 years
Other Commercial leasing | Maximum
Schedule III, Real Estate
Depreciation Life (in years)	39 years
Commercial developments
Schedule III, Real Estate
Encumbrances	$ 1,816
Initial Cost to Company, Land & Improvements	35,702
Costs Capitalized Subsequent to Acquisition or Construction	24,347
Land & Land Improvements	60,049
Total	60,049
Accumulated Depreciation	$ 35
Depreciation Life (in years)	5 years
Timberlands
Schedule III, Real Estate
Initial Cost to Company, Land & Improvements	$ 6,571
Initial Cost to Company, Buildings & Improvements	1,758
Costs Capitalized Subsequent to Acquisition or Construction	13,254
Land & Land Improvements	19,825
Buildings and Improvements	1,758
Total	21,583
Accumulated Depreciation	$ 1,986
Timberlands | Minimum
Schedule III, Real Estate
Depreciation Life (in years)	5 years
Timberlands | Maximum
Schedule III, Real Estate
Depreciation Life (in years)	30 years
Corporate and other
Schedule III, Real Estate
Costs Capitalized Subsequent to Acquisition or Construction	$ 2,820
Land & Land Improvements	2,736
Buildings and Improvements	84
Total	2,820
Accumulated Depreciation	$ 45
Corporate and other | Minimum
Schedule III, Real Estate
Depreciation Life (in years)	5 years
Corporate and other | Maximum
Schedule III, Real Estate
Depreciation Life (in years)	20 years
Unimproved land
Schedule III, Real Estate
Initial Cost to Company, Land & Improvements	$ 85
Costs Capitalized Subsequent to Acquisition or Construction	1,782
Land & Land Improvements	1,867
Total	$ 1,867