Basis of Presentation (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Customer deposits	$ 797,249		$ 797,249		$ 783,556
Contract asset insurance renewals	66,300		66,300		57,300
Residential mortgage loans available-for-sale fair value	432,481		432,481		677,207
Residential mortgage loans available-for-sale aggregate outstanding principal balance	435,500		435,500		680,500
Net gains from the sale of mortgages	48,600	$ 45,100	$ 69,200	$ 97,500
Variability in future cash flows of derivative instruments in days			90 days
Assets In-Scope Under Accounting Standards Codification 326	191,500		$ 191,500		222,900
Home sale revenues | Homebuilding | Revision of Prior Period, Reclassification, Adjustment
Finite-Lived Intangible Assets [Line Items]
Closing cost incentives		$ 46,400		$ 84,500
Interest rate lock commitments
Finite-Lived Intangible Assets [Line Items]
Derivative, notional amount	627,300		627,300		653,200
Forward contracts
Finite-Lived Intangible Assets [Line Items]
Derivative, notional amount	908,000		908,000		1,000,000
Whole loan commitments
Finite-Lived Intangible Assets [Line Items]
Derivative, notional amount	$ 95,700		$ 95,700		$ 285,900