Investment In Unconsolidated Entities - Additional Information (Details) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	May 31, 2020 USD ($) ft² a	Jun. 30, 2020 USD ($) individual	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) individual	Jun. 30, 2019 USD ($)	Jun. 26, 2020 USD ($) ft²	Dec. 31, 2019 USD ($)
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 24,014	$ 12,046	$ 32,947	$ 24,821
Acres of land sold | a	11
Carrying value of property		33,274		33,274			$ 32,312
Return on investment from Gateway Commercial Venture				22,350	0
Revenues		24,307	12,387	33,527	25,460
Land sales
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		17,028	10	17,034	65
Land sales | Affiliated Entity
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 2	$ 236	$ 12	466
Great Park
Schedule of Equity Method Investments [Line Items]
Percentage of equity ownership		37.50%		37.50%
Distribution to certain interest holders, aggregate		$ 431,300		$ 431,300
Great Park | Land sales
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax					62,600
Great Park | Land sales | Affiliated Entity
Schedule of Equity Method Investments [Line Items]
Other-than-temporary investment impairment				(26,900)
Revenue from Contract with Customer, Excluding Assessed Tax				1,000	130,000
Great Park | Land sales | Third Parties
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax				$ 21,800
Great Park | Homesites Sold
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax					31,000
Gateway Commercial Venture | Five Point Office Venture Holdings I, LLC Acquisition
Schedule of Equity Method Investments [Line Items]
Percentage of equity ownership		75.00%		75.00%
Number of individuals entitled to be appointed to executive committee | individual		2		2
Gateway Commercial Venture | Rental Revenue | Affiliated Entity
Schedule of Equity Method Investments [Line Items]
Revenues				$ 4,100	4,000
Great Park
Schedule of Equity Method Investments [Line Items]
Distributions entitled to be received				476,000
Potential additional distributions entitled to be received				$ 89,000
Percentage of equity ownership		37.50%		37.50%
Revenue from Contract with Customer, Excluding Assessed Tax				$ 22,826	192,579
Great Park | Land sales | Affiliated Entity
Schedule of Equity Method Investments [Line Items]
Other-than-temporary investment impairment				$ (26,851)	0
Gateway Commercial Venture
Schedule of Equity Method Investments [Line Items]
Percentage of equity ownership		75.00%		75.00%
Revenue from Contract with Customer, Excluding Assessed Tax				$ 16,982	17,134
Gain on asset sale, net				$ 37,413	$ 0
Gateway Commercial Venture | Gateway Commercial Venture | Five Point Office Venture Holdings I, LLC Acquisition
Schedule of Equity Method Investments [Line Items]
Acres of land sold | a	11
Area of building sold (in sq ft) | ft²	189,000
Purchase price	$ 108,000					$ 355,000
Carrying value of property	67,500
Gain on asset sale, net	37,400
Debt payment	30,000
Return on investment from Gateway Commercial Venture	$ 56,300
Area of building (in sq ft) | ft²						660,000