Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating Activities:
Net income	$ 154,352	$ 84,396	$ 265,042	$ 121,156
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation expense			18,867	9,928
Depreciation and amortization			16,178	11,527
Net loss on marketable equity securities	0	(4,983)	0	8,285
Deferred income tax expense			(3,339)	1,962
Net changes in assets and liabilities:
Trade and other receivables			(57,105)	(23,445)
Mortgage loans held-for-sale, net			46,470	23,454
Prepaids and other assets			4,695	1,209
Accounts payable and accrued and other liabilities			70,595	40,539
Net cash provided by operating activities			12,084	55,704
Investing Activities:
Purchases of marketable securities			0	(10,804)
Sales of marketable securities			0	59,266
Purchases of property and equipment			(13,447)	(12,968)
Net cash provided by (used in) investing activities			(13,447)	35,494
Financing Activities:
Payments on mortgage repurchase facility, net			(37,709)	(7,522)
Repayment of senior notes			0	(250,000)
Proceeds from issuance of senior notes			347,725	298,050
Dividend payments			(54,913)	(41,682)
Payments of deferred financing costs			(819)	0
Issuance of shares under stock-based compensation programs, net			(15,534)	1,332
Net cash provided by (used in) financing activities			238,750	(4,822)
Net increase (decrease) in cash, cash equivalents and restricted cash			237,387	86,376
Cash, cash equivalents and restricted cash:
Beginning of period			503,972	474,212
End of period	741,359	560,588	741,359	560,588
Reconciliation of cash, cash equivalents and restricted cash:
Total cash, cash equivalents and restricted cash	741,359	560,588	741,359	560,588
Homebuilding Line of Credit Facility
Financing Activities:
Payments on homebuilding line of credit, net			0	(5,000)
Homebuilding:
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	638,547	482,702	638,547	482,702
Restricted cash	14,158	15,668	14,158	15,668
Financial Services:
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	$ 88,654	$ 62,218	88,654	62,218
Housing Completed or Under Construction
Net changes in assets and liabilities:
Housing completed or under construction and land under development			(385,698)	(233,829)
Land and Land Under Development
Net changes in assets and liabilities:
Housing completed or under construction and land under development			$ 36,379	$ 94,918