Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating Activities:
Net Income	$ 401,005	$ 562,139	$ 573,657
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Stock-based compensation expense	23,468	60,985	39,655
Depreciation and amortization	25,553	27,751	31,666
Inventory impairments	29,700	121,875	1,600
Project abandonment costs	(45)	33,129	5,417
Gain on sale of other assets	0	0	(2,014)
Amortization of discount of marketable debt securities	(29,673)	(4,290)	0
Loss on debt retirement	0	0	23,571
Deferred income tax expense	10,408	(31,310)	(6,488)
Net changes in assets and liabilities:
Trade and other receivables	21,986	(21,784)	(25,334)
Mortgage loans held-for-sale, net	(28,699)	53,016	(49,973)
Prepaids and other assets	(3,886)	31,736	8,545
Accounts payable and accrued liabilities	(74,093)	(18,464)	126,415
Net cash provided by (used in) operating activities	561,630	905,646	(207,990)
Investing Activities:
Purchases of marketable securities	(1,166,412)	(656,810)	0
Maturities of marketable securities	1,679,000	100,000	0
Proceeds from sale of other assets	0	0	2,014
Purchases of property and equipment	(43,145)	(29,075)	(29,693)
Net cash provided by (used in) investing activities	469,443	(585,885)	(27,679)
Financing Activities:
Advances on mortgage repurchase facility, net	29,229	(80,548)	53,910
Payments of senior notes	0	0	(276,951)
Proceeds from issuance of senior notes	0	0	694,662
Dividend payments	(155,237)	(142,417)	(118,529)
Payments of deferred debt issuance costs	(36)	0	(1,720)
Issuance of shares under stock-based compensation programs, net	20,773	16,840	(16,216)
Net cash provided by (used in) financing activities	(105,271)	(206,125)	335,156
Net increase in cash, cash equivalents and restricted cash	925,802	113,636	99,487
Cash, cash equivalents and restricted cash:
Beginning of year	717,095	603,459	503,972
End of year	1,642,897	717,095	603,459
Reconciliation of cash, cash equivalents and restricted cash:
Total cash, cash equivalents and restricted cash	1,642,897	717,095	603,459
Homebuilding:
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Inventory impairments	29,700	121,875	1,600
Loss on debt retirement	0	0	23,571
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	1,475,964	696,075	485,839
Restricted cash	4,094	3,143	12,799
Financial Services:
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	162,839	17,877	104,821
Housing completed or under construction
Net changes in assets and liabilities:
Housing completed or under construction and land under development	(163,877)	186,265	(431,926)
Land and land under development
Net changes in assets and liabilities:
Housing completed or under construction and land under development	$ 349,783	$ (95,402)	$ (502,781)