Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income	$ 902,138	$ 596,244
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	14,720	16,801
Equity-based compensation expense	42,859	35,565
Contract land deposit and other (recoveries) impairments, net	(17,474)	32,751
Gain on sale of loans, net	(162,729)	(100,348)
Mortgage loans closed	(4,599,324)	(3,663,220)
Mortgage loans sold and principal payments on mortgage loans held for sale	4,918,464	3,914,000
Distribution of earnings from unconsolidated joint ventures	7,500	0
Net change in assets and liabilities:
Increase in inventory	(154,443)	(416,488)
(Increase) decrease in contract land deposits	(48,153)	4,585
Increase in receivables	(2,349)	(3,060)
(Decrease) increase in accounts payable and accrued expenses	(44,970)	109,921
Increase in customer deposits	140,836	79,236
Other, net	(14,783)	(26,647)
Net Cash Provided by (Used in) Operating Activities	982,292	579,340
Cash flows from investing activities:
Investments in and advances to unconsolidated joint ventures	(861)	(435)
Purchase of property, plant and equipment	(11,946)	(12,329)
Proceeds from the sale of property, plant and equipment	821	665
Net Cash Provided by (Used in) Investing Activities	(11,986)	(12,099)
Cash flows from financing activities:
Purchase of treasury stock	(1,152,855)	(216,582)
Proceeds from senior notes	0	923,905
Debt issuance costs	0	(4,750)
Principal payments on finance lease liabilities	(1,008)	(665)
Proceeds from the exercise of stock options	121,835	162,522
Net Cash Provided by (Used in) Financing Activities	(1,032,028)	864,430
Net (decrease) increase in cash, restricted cash, and cash equivalents	(61,722)	1,431,671
Cash, restricted cash, and cash equivalents, beginning of the period	2,809,782	1,160,804
Cash, restricted cash, and cash equivalents, end of the period	2,748,060	2,592,475
Supplemental disclosures of cash flow information:
Interest paid during the period, net of interest capitalized	39,473	24,957
Income taxes paid during the period, net of refunds	$ 289,850	$ 86,214