Note 3 - Segment Reporting - Reconciliation of Pretax Operating Income From Segments to Consolidated (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Pretax income		$ 48,562	$ 55,606
Homebuilding Segment [Member]
Pretax income		49,669	41,055
Homebuilding Segment [Member] | Operating Segments [Member] | Reportable Segment, West [Member]
Pretax income		36,576	33,200
Homebuilding Segment [Member] | Operating Segments [Member] | Reportable Segment, Mountain [Member]
Pretax income		21,512	21,714
Homebuilding Segment [Member] | Operating Segments [Member] | Reportable Segment, East [Member]
Pretax income		900	1,473
Homebuilding Segment [Member] | Corporate, Non-Segment [Member]
Pretax income	[1]	(9,319)	(15,332)
Financial Services Segment [Member]
Pretax income		(1,107)	14,551
Financial Services Segment [Member] | Operating Segments [Member] | Mortgage Operations [Member]
Pretax income		8,243	4,993
Financial Services Segment [Member] | Operating Segments [Member] | Other Financial Services [Member]
Pretax income		$ (9,350)	$ 9,558

[1] The pretax gain for the year ended December 31, 2017 was driven by $53.6 million in realized gains due to the sale of investments.