Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Operating Activities:
Net income	$ 25,134	$ 93,493	$ 120,953	$ 174,193
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Stock-based compensation expense			1,319	10,285
Depreciation and amortization			16,361	11,453
Inventory impairments	4,550	13,500	10,450	21,300
Project abandonment costs			2,788	(918)
Amortization of discount of marketable debt securities			(2,414)	(18,856)
Deferred income tax benefit			12,573	2,616
Net changes in assets and liabilities:
Trade and other receivables			19,373	57,221
Accounts receivable due from Parent			(22,190)	0
Mortgage loans held-for-sale, net			(37,843)	70,767
Prepaids and other assets			(3,281)	1,263
Accounts payable and accrued and other liabilities			(14,114)	(27,933)
Net cash provided by operating activities			50,375	651,929
Investing Activities:
Purchases of marketable securities			(177,133)	(665,490)
Maturities of marketable securities			80,000	569,000
Purchases of property and equipment			(7,220)	(10,550)
Net cash used in investing activities			(104,353)	(107,040)
Financing Activities:
Borrowings (payments) on mortgage repurchase facility, net			19,101	(52,601)
Dividend payments			(41,276)	(73,109)
Distribution to Parent			(611,369)	0
Issuance of shares under stock-based compensation programs, net			(25,598)	19,592
Net cash used in financing activities			(668,142)	(106,118)
Net increase (decrease) in cash, cash equivalents and restricted cash			(722,120)	438,771
Cash, cash equivalents and restricted cash:
Beginning of period			1,642,897	717,095
End of period	920,777	1,155,866	920,777	1,155,866
Reconciliation of cash, cash equivalents and restricted cash:
Total cash, cash equivalents and restricted cash	920,777	1,155,866	920,777	1,155,866
Homebuilding Line of Credit Facility
Financing Activities:
Payments on homebuilding line of credit, net			(9,000)	0
Homebuilding:
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Inventory impairments	4,550	13,500	10,450	21,300
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	834,692	1,011,748	834,692	1,011,748
Restricted cash	2,641	3,503	2,641	3,503
Financial Services:
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	$ 83,444	$ 140,615	83,444	140,615
Housing completed or under construction
Net changes in assets and liabilities:
Housing completed or under construction and land and land under development			(240,326)	(13,595)
Land and land under development
Net changes in assets and liabilities:
Housing completed or under construction and land and land under development			$ 186,726	$ 364,133