REVENUES - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	$ 14,098	$ 12,959	$ 40,584	$ 32,737
Revenues	14,615	13,488	42,098	34,118
Land sales
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	0	(12)	(1,422)	70
Management services
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	13,932	12,826	41,628	32,336
Operating properties
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	166	145	378	331
Operating properties leasing revenues	517	529	1,514	1,381
Valencia
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	166	133	(1,044)	401
Revenues	493	486	(77)	1,260
Valencia \| Land sales
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	0	(12)	(1,422)	70
Valencia \| Management services
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	0	0	0	0
Valencia \| Operating properties
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	166	145	378	331
Operating properties leasing revenues	327	353	967	859
San Francisco
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	0	0	0	0
Revenues	190	176	547	522
San Francisco \| Land sales
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	0	0	0	0
San Francisco \| Management services
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	0	0	0	0
San Francisco \| Operating properties
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	0	0	0	0
Operating properties leasing revenues	190	176	547	522
Great Park
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	7,410	9,432	23,398	28,942
Revenues	7,410	9,432	23,398	28,942
Great Park \| Land sales
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	0	0	0	0
Great Park \| Management services
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	7,410	9,432	23,398	28,942
Great Park \| Operating properties
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	0	0	0	0
Operating properties leasing revenues	0	0	0	0
Hearthstone
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	6,522	3,394	18,230	3,394
Revenues	6,522	3,394	18,230	3,394
Hearthstone \| Land sales
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	0	0	0	0
Hearthstone \| Management services
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	6,522	3,394	18,230	3,394
Hearthstone \| Operating properties
Disaggregation of Revenue [Line Items]
Land sale and related party land sale revenues	0	0	0	0
Operating properties leasing revenues	$ 0	$ 0	$ 0	$ 0