Business Combinations (Narrative) (Details) $ in Thousands			3 Months Ended		9 Months Ended
	Jul. 31, 2024 USD ($) item	Jan. 22, 2024 USD ($) item	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Business Combinations [Line Items]
Business acquisition, paid in cash					$ 157,130
Goodwill			$ 39,434		39,434		$ 30,395
Revenues			1,136,866	$ 889,423	3,124,859	$ 2,486,604
Loss before income tax expense			109,912	$ 111,999	304,864	$ 224,756
Landmark [Member]
Business Combinations [Line Items]
Number of active communities acquired | item		6
Business combination, purchase price		$ 33,400
Acquisition costs		100
Goodwill		$ 1,700
Anglia [Member]
Business Combinations [Line Items]
Number of active communities acquired | item	26
Business combination, purchase price	$ 127,000
Acquisition costs	$ 500
Amortizable intangible assets			1,900		1,900
Amortization period of acquired intangible assets	2 years
Goodwill	$ 7,400		7,351		7,351
Revenues			20,300		20,300
Loss before income tax expense			$ (1,500)		$ (1,500)
Anglia [Member] | Minimum [Member]
Business Combinations [Line Items]
Percent of estimated market participant gross margin	8.00%
Anglia [Member] | Maximum [Member]
Business Combinations [Line Items]
Percent of estimated market participant gross margin	20.00%
Right Of First Refusal [Member] | Anglia [Member]
Business Combinations [Line Items]
Amortizable intangible assets	$ 900
Non-Compete Agreements [Member] | Anglia [Member]
Business Combinations [Line Items]
Amortizable intangible assets	$ 1,000