Note 3 - Segment Reporting - Reconciliation of Revenue From Segments to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Homebuilding Segment [Member]
Revenues	$ 732,844	$ 749,608	$ 1,380,122	$ 1,357,296
Homebuilding Segment [Member] | Reportable Segment, West [Member]
Revenues	384,530	391,806	754,088	711,315
Homebuilding Segment [Member] | Reportable Segment, Mountain [Member]
Revenues	287,476	268,541	496,668	477,173
Homebuilding Segment [Member] | Reportable Segment, East [Member]
Revenues	60,838	89,261	129,366	168,808
Financial Services Segment [Member]
Revenues	18,597	21,372	36,001	40,407
Financial Services Segment [Member] | Mortgage Operations [Member]
Revenues	11,689	14,547	21,863	27,243
Financial Services Segment [Member] | Other Financial Services [Member]
Revenues	$ 6,908	$ 6,825	$ 14,138	$ 13,164