Note 3 - Segment Reporting - Reconciliation of Revenue From Segments to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Homebuilding Segment [Member]
Revenues	$ 647,278	$ 607,688
Homebuilding Segment [Member] | Reportable Segment, West [Member]
Revenues	369,558	319,509
Homebuilding Segment [Member] | Reportable Segment, Mountain [Member]
Revenues	209,192	208,632
Homebuilding Segment [Member] | Reportable Segment, East [Member]
Revenues	68,528	79,547
Financial Services Segment [Member]
Revenues	17,404	19,035
Financial Services Segment [Member] | Mortgage Operations [Member]
Revenues	10,174	12,696
Financial Services Segment [Member] | Other Financial Services [Member]
Revenues	$ 7,230	$ 6,339