Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Operating Activities:
Net income	$ 84,396	$ 54,593	$ 121,156	$ 95,143
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation expense			9,928	8,383
Depreciation and amortization			11,527	9,941
Inventory impairments			0	610
Net (gain) loss on marketable equity securities	(4,983)	(2,327)	8,285	(7,167)
Deferred income tax expense			1,962	7,759
Net changes in assets and liabilities:
Trade and other receivables			(23,445)	(36)
Mortgage loans held-for-sale, net			23,454	39,874
Prepaid and other assets			1,209	(4,206)
Accounts payable and accrued and other liabilities			40,539	(546)
Net Cash Provided by (Used in) Operating Activities			55,704	55,665
Investing Activities:
Purchases of marketable securities			(10,804)	(5,116)
Sales of marketable securities			59,266	5,057
Purchases of property and equipment			(12,968)	(13,860)
Net cash provided by (used in) investing activities			35,494	(13,919)
Financing Activities:
Repayment of senior notes			(250,000)	0
Proceeds from issuance of senior notes			298,050	0
Dividend payments			(41,682)	(35,636)
Issuance of shares under stock-based compensation programs, net			1,332	17,328
Net cash used in financing activities			(4,822)	(52,084)
Net increase (decrease) in cash, cash equivalents and restricted cash			86,376	(10,338)
Cash, cash equivalents and restricted cash:
Beginning of period			474,212	470,139
End of period	560,588	459,801	560,588	459,801
Reconciliation of cash, cash equivalents and restricted cash:
Total cash, cash equivalents and restricted cash	560,588	459,801	560,588	459,801
Mortgage Repurchase Facility
Financing Activities:
Payments on homebuilding line of credit, net			(7,522)	(33,776)
Homebuilding Line of Credit Facility
Financing Activities:
Payments on homebuilding line of credit, net			(5,000)	0
Homebuilding:
Adjustments to reconcile net income to net cash provided by operating activities:
Inventory impairments	0	0	0	610
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	482,702	390,061	482,702	390,061
Restricted cash	15,668	12,911	15,668	12,911
Financial Services:
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	$ 62,218	$ 56,829	62,218	56,829
Housing Completed or Under Construction
Net changes in assets and liabilities:
Housing completed or under construction and land under development			(233,829)	(118,528)
Land and Land Under Development
Net changes in assets and liabilities:
Housing completed or under construction and land under development			$ 94,918	$ 24,438