Investment In Unconsolidated Entities - Summarized Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Add equity in earnings (losses) from unconsolidated entities
Revenue from customers	$ 8,065	$ 11,629	$ 41,012	$ 36,450
Other costs and expenses	(24,540)	(34,950)	(91,450)	(104,911)
Net (loss) income	36,422	(22,955)	(2,559)	7,150
The Company’s share of net (loss) income	16,964	(10,663)	(1,210)	2,633
Equity in (loss) earnings from Great Park Venture	$ 52,423	$ (1,750)	45,417	4,463
Great Park
Add equity in earnings (losses) from unconsolidated entities
Revenue from customers			23,054	231,216
Cost of land sales			(15,304)	(153,486)
Other costs and expenses			(35,995)	(48,525)
Net (loss) income			(28,245)	29,205
The Company’s share of net (loss) income			(10,592)	10,952
Basis difference amortization			(1,204)	(3,694)
Equity in (loss) earnings from Great Park Venture			(38,647)	7,258
Gateway Commercial Venture
Add equity in earnings (losses) from unconsolidated entities
Revenue from customers			22,141	25,708
Cost of land sales			(5,342)	(5,177)
The Company’s share of net (loss) income			112,085	(3,726)
Depreciation and amortization			(8,427)	(11,319)
Gain on asset sales, net			112,260	0
Interest expense			(8,547)	(12,938)
Equity in (loss) earnings from Great Park Venture			$ 84,064	$ (2,795)