Debt (Narrative) (Details) $ in Thousands	1 Months Ended		12 Months Ended
	Aug. 31, 2021 USD ($)	May 31, 2019 USD ($)	Dec. 31, 2023 USD ($) item	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Feb. 29, 2020 USD ($)
Debt Instrument [Line Items]
Notes payable			$ 1,062,471	$ 1,019,412
Line of credit facility, outstanding amount
Mortgage repurchase facilities			239,298	197,626
Land development notes, outstanding			14,400	14,400
Insurance premium notes, outstanding			10,300	6,300
Loss on debt extinguishment					$ (14,458)
Interest expense payments			$ 58,100	$ 61,100	$ 59,200
Inspire [Member] | Mortgage Repurchase Facilities - Financial Services [Member]
Debt Instrument [Line Items]
Weighted average interest rate			6.90%
Maturity date			Dec. 18, 2024
Maximum [Member] | Inspire [Member] | Mortgage Repurchase Facilities - Financial Services [Member]
Debt Instrument [Line Items]
Line of credit facility. maximum borrowing capacity			$ 375,000
Construction Loan Agreement [Member]
Debt Instrument [Line Items]
Number of construction loan agreements | item			3
Principal amount			$ 187,600
Weighted average interest rate			7.40%	5.60%
Maturity date			Mar. 17, 2028
Notes payable			$ 44,900	$ 7,400
Debt instrument, option to extend maturity, term			12 months
Senior Note 3.875% Due August 2029 [Member]
Debt Instrument [Line Items]
Principal amount	$ 500,000
Interest rate	3.875%		3.875%
Amount borrowed from lender	$ 493,800
Discount rate	100.00%
Notes payable			$ 495,656	494,884
Deferred issuance costs	$ 6,200
Senior Notes 6.750% Due June 2027 [Member]
Debt Instrument [Line Items]
Principal amount		$ 500,000
Interest rate		6.75%	6.75%
Amount borrowed from lender		$ 493,900
Discount rate		100.00%
Notes payable			$ 497,210	496,394
Deferred issuance costs		$ 6,100
Exchange Notes Due 2027 [Member]
Debt Instrument [Line Items]
Principal amount						$ 500,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, outstanding amount			$ 0	$ 0
Revolving Credit Facility [Member] | Second Amended And Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Maturity date			Apr. 30, 2026
Line of credit facility. maximum borrowing capacity			$ 800,000
Letter of credit sublimit			250,000
Revolving Credit Facility [Member] | Second Amended And Restated Credit Agreement [Member] | Maximum [Member]
Debt Instrument [Line Items]
Line of credit facility, increased amount			$ 200,000
Revolving Credit Facility [Member] | Second Amended And Restated Credit Agreement [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate			0.50%
Revolving Credit Facility [Member] | Second Amended And Restated Credit Agreement [Member] | SOFR Administered By FRB Of NY [Member]
Debt Instrument [Line Items]
Basis spread on variable rate			0.10%