Note 5 - Accumulated Other Comprehensive Income - Reclassifications Out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Other-than-temporary impairment of marketable securities	$ (101)	$ (431)
Income before income taxes	36,360	14,273
Provision for income taxes	(14,111)	(4,710)
Net income	22,249	9,563
Homebuilding Segment [Member]
Interest and other income	2,327	1,850
Other-than-temporary impairment of marketable securities	(50)	(431)
Income before income taxes	25,351	8,656
Financial Services Segment [Member]
Other-than-temporary impairment of marketable securities	(51)
Interest and other income	979	841
Income before income taxes	11,009	5,617
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Income before income taxes	460	(1,346)
Provision for income taxes	(175)	511
Net income	285	(835)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Homebuilding Segment [Member] | Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Interest and other income	522	(915)
Other-than-temporary impairment of marketable securities	(50)	(431)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Financial Services Segment [Member] | Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Other-than-temporary impairment of marketable securities	(51)
Interest and other income	$ 39