Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income	$ 1,725,575	$ 1,236,719	$ 901,248
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	17,396	19,463	21,992
Equity-based compensation expense	82,537	58,234	50,794
Contract land deposit impairments (recoveries) and other impairments, net	28,466	(20,827)	28,079
Gain on sale of loans, net	(152,668)	(205,582)	(168,720)
Deferred tax benefit	(11,101)	(234)	(17,565)
Mortgage loans closed	(6,314,514)	(6,079,454)	(5,323,932)
Mortgage loans sold and principal payments on mortgage loans held for sale	6,471,270	6,424,204	5,536,568
Distribution of earnings from unconsolidated joint ventures	9,000	9,500	1,432
Net change in assets and liabilities:
Decrease (increase) in inventory	159,091	(238,284)	(362,384)
(Increase) decrease in contract land deposits	(26,407)	(87,374)	519
(Increase) decrease in receivables	(27,384)	1,956	(1,675)
(Decrease) increase in accounts payable and accrued expenses	(13,777)	(19,954)	168,667
Increase (Decrease) in Contract with Customer, Liability	(103,659)	176,705	108,872
Other, net	26,276	(32,679)	(18,626)
Operating activities	1,870,101	1,242,393	925,269
Net cash provided by operating activities	1,870,101	1,242,393	925,269
Cash flows from investing activities:
Investments in and advances to unconsolidated joint ventures	(9,735)	(1,282)	(435)
Distribution of capital from unconsolidated joint ventures	0	0	11,625
Purchase of property, plant and equipment	(18,428)	(17,875)	(16,119)
Proceeds from the sale of property, plant and equipment	732	978	996
Net Cash Provided by (Used in) Investing Activities	(27,431)	(18,179)	(3,933)
Cash flows from financing activities:
Purchase of treasury stock	(1,500,358)	(1,538,019)	(371,078)
Proceeds from the issuance of senior notes	0	0	923,905
Redemption of senior notes	(600,000)	0	0
Debt issuance costs	0	0	(5,062)
Principal payments on finance lease liabilities	(1,495)	(1,363)	(989)
Proceeds from the exercise of stock options	196,717	142,370	180,866
Net cash (used in) provided by financing activities	(1,905,136)	(1,397,012)	727,642
Net (decrease) increase in cash, restricted cash, and cash equivalents	(62,466)	(172,798)	1,648,978
Cash, restricted cash, and cash equivalents, beginning of the year	2,636,984	2,809,782	1,160,804
Cash, restricted cash, and cash equivalents, end of the year	2,574,518	2,636,984	2,809,782
Supplemental disclosures of cash flow information:
Interest paid during the year, net of interest capitalized	47,502	53,680	36,805
Income taxes paid during the year, net of refunds	$ 529,820	$ 389,383	$ 163,076