Basis of Presentation (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Customer deposits	$ 796,384		$ 783,556
Contract asset insurance renewals	61,900		57,300
Residential mortgage loans available-for-sale fair value	420,638		677,207
Residential mortgage loans available-for-sale aggregate outstanding principal balance	420,700		680,500
Net gains from the sale of mortgages	$ 20,600	$ 52,400
Variability in future cash flows of derivative instruments in days	90 days
Assets In-Scope Under Accounting Standards Codification 326	$ 208,900		222,900
Home sale revenues | Homebuilding | Revision of Prior Period, Reclassification, Adjustment
Finite-Lived Intangible Assets [Line Items]
Closing cost incentives	81,200	$ (38,100)
Interest rate lock commitments
Finite-Lived Intangible Assets [Line Items]
Derivative, notional amount	766,000		653,200
Forward contracts
Finite-Lived Intangible Assets [Line Items]
Derivative, notional amount	1,100,000		1,000,000
Whole loan commitments
Finite-Lived Intangible Assets [Line Items]
Derivative, notional amount	$ 135,600		$ 285,900