Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net income	$ 51,553	$ 27,615
Depreciation, Depletion and Amortization	1,539	1,678
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Share-based compensation expense	1,819	1,827
Earnest Money Deposits and Pre-acquisition Costs Written-Off	1,532	503
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	0	(257)
Deferred income taxes, net	(115)	556
Income (Loss) from Equity Method Investments	(7,739)	(4,543)
Distributions of income from unconsolidated entities	3,393	1,673
Changes in operating assets and liabilities:
Increase in receivables	(9,767)	(167)
Decrease (increase) in inventory	2,798	(50,647)
(Increase) decrease in earnest money deposits	(6,273)	3,882
(Increase) decrease in other assets	(4,820)	249
Decrease in accounts payable	1,322	669
Increase (decrease) in accrued expenses	14,735	(1,276)
Increase (Decrease) in Contract with Customer, Liability	3,061	400
Net cash provided by (used in) operating activities	39,005	(20,794)
Cash flows from investing activities:
Purchase of property and equipment	(1,180)	(1,143)
Net cash used in investing activities	(1,670)	(1,143)
Net Cash Provided by (Used in) Financing Activities [Abstract]
Borrowings from lines of credit	112,000	93,500
Repayments of Lines of Credit	133,000	61,500
Payment, Tax Withholding, Share-based Payment Arrangement	592	544
Payments for Repurchase of Common Stock	0	388
Contributions of LLC Members	400	0
Payments to Noncontrolling Interests	5,251	10,993
Net cash (used in) provided by financing activities	(23,699)	19,034
Net increase (decrease) in cash and cash equivalents and restricted cash	13,636	(2,903)
Cash and cash equivalents, beginning of period		38,315
Restricted cash, beginning of period	4,416	3,440
Cash and cash equivalents and restricted cash, beginning of period	37,685	41,755
Cash and cash equivalents, end of period		34,383
Restricted cash, end of period	8,159	4,469
Cash and cash equivalents and restricted cash, end of period	51,321	38,852
Supplemental Cash Flow Information [Abstract]
Interest Paid, Excluding Capitalized Interest, Operating Activities	0	0
Income Taxes Paid, Net	13	7,520
Earnest Money Deposits and Pre-acquisition Costs Written-Off	1,532	503
Proceeds from Notes Payable	10,562	0
Repayments of Notes Payable	(6,313)	0
Payment for Contingent Consideration Liability, Financing Activities	0	(514)
Payments for Repurchase of Redeemable Noncontrolling Interest	(1,505)	(527)
Payment for Contingent Consideration Liability, Operating Activities	(5,267)	(1,332)
Payments to Acquire Equity Method Investments	$ 490	$ 0