Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating Activities:
Net income	$ 145,954	$ 98,938	$ 410,996	$ 220,094
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation expense			26,832	18,536
Depreciation and amortization			23,930	18,881
Net loss on marketable equity securities	0	0	0	8,285
Gain on sale of other assets			(2,014)	0
Loss on debt retirement	12,150	0	12,150	0
Deferred income tax expense			(4,847)	8,493
Net changes in assets and liabilities:
Trade and other receivables			(55,529)	(17,512)
Mortgage loans held-for-sale, net			(16,365)	36,515
Prepaids and other assets			9,919	(20,314)
Accounts payable and accrued and other liabilities			88,273	35,023
Net cash provided by (used in) operating activities			(86,522)	29,442
Investing Activities:
Purchases of marketable securities			0	(10,804)
Sales of marketable securities			0	59,266
Proceeds from sale of other assets			2,014	0
Purchases of property and equipment			(23,028)	(20,885)
Net cash provided by (used in) investing activities			(21,014)	27,577
Financing Activities:
Payments on mortgage repurchase facility, net			13,404	(18,755)
Repayment of senior notes			(136,394)	(250,000)
Proceeds from issuance of senior notes			694,662	298,050
Dividend payments			(83,189)	(63,056)
Payments of deferred financing costs			(1,720)	0
Issuance of shares under stock-based compensation programs, net			(15,553)	29,974
Net cash provided by (used in) financing activities			471,210	(8,787)
Net increase in cash, cash equivalents and restricted cash			363,674	48,232
Cash, cash equivalents and restricted cash:
Beginning of period			503,972	474,212
End of period	867,646	522,444	867,646	522,444
Reconciliation of cash, cash equivalents and restricted cash:
Total cash, cash equivalents and restricted cash	867,646	522,444	867,646	522,444
Payments on homebuilding line of credit, net
Financing Activities:
Payments on homebuilding line of credit, net			0	(5,000)
Housing completed or under construction
Net changes in assets and liabilities:
Housing completed or under construction and land under development			(461,105)	(387,269)
Land and land under development
Net changes in assets and liabilities:
Housing completed or under construction and land under development			(118,762)	108,710
Homebuilding:
Adjustments to reconcile net income to net cash provided by operating activities:
Loss on debt retirement			12,150
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	761,715	432,277	761,715	432,277
Restricted cash	12,047	19,732	12,047	19,732
Financial Services:
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	$ 93,884	$ 70,435	$ 93,884	$ 70,435