Note 5 - Capitalized Interest - Summary of Interest Incurred, Capitalized, and Expensed (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Interest incurred	$ 5,751	$ 6,150	$ 11,082	$ 12,530
Interest capitalized to inventory	(5,660)	(4,879)	(10,637)	(10,541)
Interest expensed	91	1,271	445	1,989
Capitalized interest in beginning inventory	23,003	25,152	22,053	26,397
Interest capitalized as a cost of inventory	5,660	4,879	10,637	10,541
Previously capitalized interest included in cost of home and land sales	(5,616)	(4,601)	(9,643)	(10,747)
Previously capitalized interest included in project abandonment costs	0	0	0	(761)
Capitalized interest in ending inventory	23,047	25,430	23,047	25,430
Capitalized interest in beginning investment in unconsolidated joint ventures	0	93	0	541
Previously capitalized interest included in equity in net income (loss) of unconsolidated joint ventures	0	(31)	0	(479)
Capitalized interest in ending investment in unconsolidated joint ventures	0	62	0	62
Total capitalized interest in ending inventory and investments in unconsolidated joint ventures	$ 23,047	$ 25,492	$ 23,047	$ 25,492
Capitalized interest as a percentage of inventory	6.40%	6.90%	6.40%	6.90%
Interest included in cost of home sales as a percentage of home sales revenue	4.10%	6.00%	4.20%	6.20%
Capitalized interest as a percentage of investment in unconsolidated joint ventures	0.00%	0.50%	0.00%	0.50%