Notes Receivable - Schedule of Notes Receivable (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 129,118	$ 129,726
Notes Receivable
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	129,118	129,726
Notes Receivable | ABC Land and Development, Inc.
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 4,408	4,408
Interest Rate	9.50%
Notes Receivable | ABC Paradise, LLC
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 1,210	1,210
Interest Rate	9.50%
Notes Receivable | Autumn Breeze
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 2,326	2,486
Interest Rate	5.00%
Ownership interest if note converted	100.00%
Notes Receivable | Bellwether Ridge
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 3,973	3,967
Interest Rate	5.00%
Ownership interest if note converted	100.00%
Notes Receivable | Forest Pines
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 6,472	6,472
Interest Rate	5.00%
Ownership interest if note converted	100.00%
Notes Receivable | Lake Wales
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 3,000	3,000
Interest Rate	9.50%
Notes Receivable | Legacy Pleasant Grove
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 496	496
Interest Rate	12.00%
Notes Receivable | McKinney Ranch
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 3,926	4,554
Interest Rate	6.00%
Notes Receivable | One Realco Land Holding, Inc.
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 1,728	1,728
Interest Rate	9.50%
Notes Receivable | Parc at Ingleside
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 3,663	3,700
Interest Rate	5.00%
Ownership interest if note converted	100.00%
Notes Receivable | Parc at Opelika
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 2,914	2,305
Interest Rate	10.00%
Ownership interest if note converted	100.00%
Notes Receivable | Parc at Windmill Farms
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 7,836	7,830
Interest Rate	5.00%
Ownership interest if note converted	100.00%
Notes Receivable | Phillips Foundation For Better Living Inc ., Maturing March 31, 2024
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 182	813
Interest Rate	12.00%
Notes Receivable | Plum Tree
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 1,767	1,537
Interest Rate	5.00%
Ownership interest if note converted	100.00%
Notes Receivable | Riverview on the Park Land, LLC
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 1,045	1,045
Interest Rate	9.50%
Notes Receivable | Spartan Land
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 5,907	5,907
Interest Rate	12.00%
Notes Receivable | Spyglass of Ennis
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 5,319	5,319
Interest Rate	5.00%
Ownership interest if note converted	100.00%
Notes Receivable | Steeple Crest
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 6,498	6,498
Interest Rate	5.00%
Ownership interest if note converted	100.00%
Notes Receivable | Unified Housing Foundation Inc., Maturing June 30, 2023 A
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 2,881	2,881
Interest Rate	12.00%
Notes Receivable | Unified Housing Foundation Inc., Maturing June 30, 2023 B
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 212	212
Interest Rate	12.00%
Notes Receivable | Unified Housing Foundation Inc., Maturing June 30, 2023 C
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 6,831	6,831
Interest Rate	12.00%
Notes Receivable | Unified Housing Foundation Inc., Maturing June 30, 2023 D
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 10,401	10,401
Interest Rate	12.00%
Notes Receivable | Unified Housing Foundation Inc., Maturing March 31, 2022
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 10,096	10,096
Interest Rate	12.00%
Notes Receivable | Unified Housing Foundation Inc., Maturing March 31, 2023
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 6,990	6,990
Interest Rate	12.00%
Notes Receivable | Unified Housing Foundation Inc., Maturing May 31, 2023
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 3,615	3,615
Interest Rate	12.00%
Notes Receivable | Unified Housing Foundation Inc., Maturing December 31, 2032
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 17,172	17,172
Interest Rate	12.00%
Notes Receivable | Unified Housing Foundation Inc., Maturing March 31, 2024
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 6,521	6,521
Interest Rate	12.00%
Notes Receivable | Unified Housing Foundation Inc., Maturing April 30, 2024
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 1,549	1,549
Interest Rate	12.00%
Notes Receivable | Unified Housing Foundation Inc., June 30, 2024
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying value	$ 180	$ 183
Interest Rate	12.00%