Note 17 - Supplemental Guarantor Information - Supplemental Condensed Consolidating Balance Sheets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 85,588		$ 79,314	$ 48,224
Restricted cash	144		117
Contracts and accounts receivable	7,112		15,982
Intercompany receivables	0		0
Due from Affiliates	140		238
Real estate inventories	370,949		433,938
Investment in and advances to unconsolidated joint ventures	12,931		30,217
Investment in subsidiaries	0		0
Deferred tax asset, net	15,866		17,503
Other assets	48,864		25,880
Total assets	541,594		603,189
Liabilities and equity
Accounts payable	16,112		25,044
Accrued expenses and other liabilities	33,280		40,554
Intercompany payables	0		0
Due to affiliates	0		0
Senior notes, net	295,124		304,832
Total liabilities	344,516		370,430
Total stockholders' equity	196,966		232,647
Non-controlling interest in subsidiary	112		112
Total equity	197,078	$ 222,336	232,759	$ 239,193	$ 237,079	$ 240,030
Total liabilities and equity	541,594		603,189
Consolidation, Eliminations [Member]
Assets
Cash and cash equivalents	0		0
Restricted cash	0		0
Contracts and accounts receivable	(417)		(424)
Intercompany receivables	(259,822)		(258,372)
Due from Affiliates	0		0
Real estate inventories	0		0
Investment in and advances to unconsolidated joint ventures	0		0
Investment in subsidiaries	(150,811)		(198,448)
Deferred tax asset, net	0		0
Other assets	0		0
Total assets	(411,050)		(457,244)
Liabilities and equity
Accounts payable	0		0
Accrued expenses and other liabilities	(413)		(421)
Intercompany payables	(259,822)		(258,372)
Due to affiliates	(4)		(3)
Senior notes, net	0		0
Total liabilities	(260,239)		(258,796)
Total stockholders' equity	(150,811)		(198,448)
Non-controlling interest in subsidiary	0		0
Total equity	(150,811)		(198,448)
Total liabilities and equity	(411,050)		(457,244)
Parent Company [Member]
Assets
Cash and cash equivalents	39,871		66,166
Restricted cash	0		0
Contracts and accounts receivable	4		3
Intercompany receivables	259,822		258,372
Due from Affiliates	1		0
Real estate inventories	0		0
Investment in and advances to unconsolidated joint ventures	0		0
Investment in subsidiaries	150,811		198,448
Deferred tax asset, net	15,237		17,003
Other assets	37,820		9,505
Total assets	503,566		549,497
Liabilities and equity
Accounts payable	127		68
Accrued expenses and other liabilities	11,349		11,950
Intercompany payables	0		0
Due to affiliates	0		0
Senior notes, net	295,124		304,832
Total liabilities	306,600		316,850
Total stockholders' equity	196,966		232,647
Non-controlling interest in subsidiary	0		0
Total equity	196,966		232,647
Total liabilities and equity	503,566		549,497
Guarantor Subsidiaries [Member]
Assets
Cash and cash equivalents	45,543		12,978
Restricted cash	144		117
Contracts and accounts receivable	7,525		16,403
Intercompany receivables	0		0
Due from Affiliates	139		238
Real estate inventories	370,949		433,938
Investment in and advances to unconsolidated joint ventures	12,931		30,217
Investment in subsidiaries	0		0
Deferred tax asset, net	629		500
Other assets	11,017		16,340
Total assets	448,877		510,731
Liabilities and equity
Accounts payable	15,985		24,973
Accrued expenses and other liabilities	22,318		28,999
Intercompany payables	259,822		258,372
Due to affiliates	4		3
Senior notes, net	0		0
Total liabilities	298,129		312,347
Total stockholders' equity	150,748		198,384
Non-controlling interest in subsidiary	0		0
Total equity	150,748		198,384
Total liabilities and equity	448,877		510,731
Non-Guarantor Subsidiaries [Member]
Assets
Cash and cash equivalents	174		170
Restricted cash	0		0
Contracts and accounts receivable	0		0
Intercompany receivables	0		0
Due from Affiliates	0		0
Real estate inventories	0		0
Investment in and advances to unconsolidated joint ventures	0		0
Investment in subsidiaries	0		0
Deferred tax asset, net	0		0
Other assets	27		35
Total assets	201		205
Liabilities and equity
Accounts payable	0		3
Accrued expenses and other liabilities	26		26
Intercompany payables	0		0
Due to affiliates	0		0
Senior notes, net	0		0
Total liabilities	26		29
Total stockholders' equity	63		64
Non-controlling interest in subsidiary	112		112
Total equity	175		176
Total liabilities and equity	$ 201		$ 205