Debt (Summary of Senior Notes) (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Net premiums, discounts, and issuance costs	$ (6,050)	$ (6,324)
Total senior notes	1,583,094	1,582,820
Other notes payable	42,578	35,766
Notes payable	1,625,672	1,618,586
Estimated fair value	$ 1,706,875	1,701,270
Senior Notes | 5.500% unsecured senior notes due March 2026
Debt Instrument [Line Items]
Stated interest rate	5.50%
Face amount	$ 251,867	251,867
Senior Notes | 5.000% unsecured senior notes due January 2027
Debt Instrument [Line Items]
Stated interest rate	5.00%
Face amount	$ 337,277	337,277
Senior Notes | 7.875% unsecured senior notes due June 2032
Debt Instrument [Line Items]
Stated interest rate	7.875%
Face amount	$ 300,000	300,000
Senior Notes | 6.375% unsecured senior notes due May 2033
Debt Instrument [Line Items]
Stated interest rate	6.375%
Face amount	$ 400,000	400,000
Senior Notes | 6.000% unsecured senior notes due February 2035
Debt Instrument [Line Items]
Stated interest rate	6.00%
Face amount	$ 300,000	$ 300,000