Note 22 - Results of Quarterly Operations (Unaudited) (Details) - Results of Quarterly Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
2014
Total revenue	$ 505,672	$ 418,403	$ 442,752	$ 327,757	$ 472,162	$ 448,000	$ 416,018	$ 344,254
Home sales revenue	493,070	405,051	430,743	318,534	460,939	433,693	400,327	331,748	1,694,584	1,680,434	1,203,023
Asset impairments	(910)		(850)		(569)	(350)
Gross margin from home sales (including impairments)	16.30%	16.50%	17.10%	18.50%	17.40%	18.10%	18.10%	17.40%
Homebuilding selling, general and administrative expenses	54,602	50,512	49,798	48,341	55,421	57,753	51,908	48,201
Income before income taxes	23,885	23,924	34,026	18,640	34,318	34,909	38,012	22,586	100,475	129,825	61,115
Net income	$ 14,639	$ 15,458	$ 21,542	$ 11,504	$ 30,709	$ 36,251	$ 224,909	$ 22,516	$ 63,143	$ 314,385	$ 62,699
Earnings per share:
Basic (in Dollars per share)	$ 0.30	$ 0.32	$ 0.44	$ 0.24	$ 0.62	$ 0.73	$ 4.60	$ 0.46	$ 1.29	$ 6.39	$ 1.29
Diluted (in Dollars per share)	$ 0.30	$ 0.32	$ 0.44	$ 0.23	$ 0.62	$ 0.73	$ 4.56	$ 0.45	$ 1.29	$ 6.34	$ 1.29