Note 15 - Segment Information - Financial Information Relating to Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Revenue	$ 132,033	$ 118,848
Pretax loss	(18,413)	(2,651)
Total assets	579,936		$ 603,189
Corporate, Non-Segment [Member]
Total assets	107,067		93,583
Home Building Segment [Member]
Total assets	460,233		498,413
Fee Building Segment [Member]
Total assets	12,636		11,193
California 1 [Member] | Home Building Segment [Member]
Total assets	398,714		416,179
Arizona 1 [Member] | Home Building Segment [Member]
Total assets	61,519		$ 82,234
Home Building [Member]
Revenue	95,659	99,186
Pretax loss	(19,143)	(3,045)
Home Building [Member] | California 1 [Member]
Revenue	83,280	83,332
Pretax loss	(4,451)	(2,567)
Home Building [Member] | Arizona 1 [Member]
Revenue	12,379	15,854
Pretax loss	(14,692)	(478)
Land [Member]
Revenue	147	0
Land [Member] | California 1 [Member]
Revenue	147	0
Homebuilding and Land [Member]
Revenue	95,806	99,186
Construction [Member]
Revenue	36,227	19,662
Pretax loss	$ 730	$ 394