Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income	$ 204,381,000	$ 117,797,000	$ 64,302,000
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation and amortization expense	2,744,000	3,666,000	3,079,000
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	150,000	36,000	10,000
Share-based compensation expense	3,078,000	2,097,000	2,191,000
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	0	368,000	4,906,000
Deferred income taxes, net	(365,000)	(114,000)	1,237,000
Income (Loss) from Equity Method Investments	(19,713,000)	(16,654,000)	(9,809,000)
Allowances For Option Deposits And Pre-Acquisition Costs	223,000	1,513,000	884,000
Distributions of income from unconsolidated entities	10,548,000	10,936,000	5,084,000
Changes in operating assets and liabilities:
(Increase) decrease in receivables	(1,647,000)	(504,000)	122,000
Increase in inventory	(358,270,000)	(90,345,000)	(83,970,000)
(Increase) decrease in earnest money deposits	(3,772,000)	(9,069,000)	2,107,000
Decrease (increase) in other assets	2,054,000	(3,739,000)	(2,409,000)
Increase (decrease) in accounts payable	21,161,000	(5,523,000)	3,953,000
Increase (decrease) in accrued expenses	20,935,000	15,760,000	(4,384,000)
Payment for Contingent Consideration Liability, Operating Activities	(368,000)	(5,267,000)	(1,332,000)
Increase (Decrease) in Contract with Customer, Liability	26,479,000	14,177,000	(8,024,000)
Net cash (used in) provided by operating activities	(92,382,000)	35,135,000	(22,053,000)
Cash flows from investing activities:
Investments in unconsolidated entities	(8,000)	(10,431,000)	(5,300,000)
Purchase of property and equipment, net of disposals	(2,025,000)	(2,903,000)	(2,579,000)
Net cash used in investing activities	(2,033,000)	(13,334,000)	(7,879,000)
Cash flows from financing activities:
Borrowings from lines of credit	749,800,000	354,500,000	224,000,000
Proceeds from Issuance of Senior Long-term Debt	225,000,000	37,500,000	75,000,000
Payments of Debt Issuance Costs	(2,901,000)	(527,000)	(1,974,000)
Repayments of lines of credit	(855,800,000)	(412,500,000)	(260,000,000)
Proceeds from Notes Payable	209,000	10,714,000	0
Repayments of notes payable	(2,124,000)	(8,590,000)	0
Payment for Contingent Consideration Liability, Financing Activities	0	0	(514,000)
Payments of withholding tax on vesting of restricted stock awards	(834,000)	(592,000)	(544,000)
Payments for Repurchase of Common Stock	0	0	(2,186,000)
Proceeds from Issuance of Preferred Stock and Preference Stock	47,696,000	0	0
Contributions from noncontrolling interests	0	400,000	3,600,000
Distributions to noncontrolling interests	(6,606,000)	(5,251,000)	(10,993,000)
Proceeds from (Payments for) Other Financing Activities	(106,000)	(1,505,000)	(527,000)
Net cash provided by (used in) financing activities	154,334,000	(25,851,000)	25,862,000
Net increase (decrease) in cash and cash equivalents and restricted cash	59,919,000	(4,050,000)	(4,070,000)
Restricted Cash	14,858,000	14,156,000	4,416,000
Cash	78,696,000	19,479,000	33,269,000
Cash and restricted cash	93,554,000	33,635,000	37,685,000
Supplemental disclosure of cash flow information:
Cash paid for income taxes, net of refunds	$ 47,288,000	$ 20,541,000	$ 14,313,000