Note 2 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Accounting Policies [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

	Year Ended December 31,
	2015			2014			2013
	(Dollars in thousands)
Warranty accrual, beginning of the year	$	13,584		$	13,811		$	15,514
Warranty assumed with merger		25,528			—			—
Warranty costs accrued during the year		13,803			7,550			2,495
Warranty costs paid during the year		(12,224	)		(7,777	)		(4,198	)
Warranty accrual, end of the year	$	40,691		$	13,584		$	13,811

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Year Ended December 31,
	2015			2014			2013
	(Dollars in thousands, except per share amounts)
Numerator:
Net income	$	213,509		$	215,865		$	188,715
Less: Net income allocated to preferred shareholder		(32,997	)		(51,650	)		(57,386	)
Less: Net income allocated to unvested restricted stock		(369	)		(297	)		(265	)
Net income available to common stockholders for basic earnings per common share		180,143			163,918			131,064
Effect of dilutive securities:
Net income allocated to preferred shareholder		32,997			51,650			57,386
Interest on 1.625% convertible senior notes due 2018		47			n/a			n/a
Interest on 0.25% convertible senior notes due 2019		9			n/a			n/a
Interest on 1.25% convertible senior notes due 2032		898			899			899
Net income available to common and preferred stock for diluted earnings per share	$	214,094		$	216,467		$	189,349
Denominator:
Weighted average basic common shares outstanding		71,713,747			55,737,548			50,623,649
Weighted average additional common shares outstanding if preferred shares converted to common shares (if dilutive)		13,135,814			17,562,557			22,165,311
Total weighted average common shares outstanding if preferred shares converted to common shares		84,849,561			73,300,105			72,788,961
Effect of dilutive securities:
Share-based awards		816,459			1,256,964			1,348,571
1.625% convertible senior notes due 2018		1,804,192			n/a			n/a
0.25% convertible senior notes due 2019		915,985			n/a			n/a
1.25% convertible senior notes due 2032		6,262,570			6,262,570			6,262,570
Weighted average diluted shares outstanding		94,648,767			80,819,639			80,400,102
Income per share:
Basic	$	2.51		$	2.94		$	2.59
Diluted	$	2.26		$	2.68		$	2.36

Schedule of Homebuilding Interest Capitalized [Table Text Block]

	Year Ended December 31,
	2015			2014			2013
	(Dollars in thousands)
Total interest incurred (1)	$	171,509		$	153,695		$	140,865
Less: Interest capitalized to inventories owned		(169,233	)		(151,962	)		(137,990	)
Less: Interest capitalized to investments in unconsolidated joint ventures		(2,276	)		(1,733	)		(2,875	)
Interest expense	$	—		$	—		$	—
Interest previously capitalized to inventories owned, included in home cost of home sales	$	131,611		$	119,422		$	120,714
Interest previously capitalized to inventories owned, included in land cost of land sales	$	7,770		$	3,690		$	1,064
Interest previously capitalized to investments in unconsolidated joint ventures, included in income (loss) from unconsolidated joint ventures	$	—		$	30		$	441
Interest capitalized in ending inventories owned (2)	$	305,459		$	275,607		$	240,734
Interest capitalized as a percentage of inventories owned		5.0	%		8.5	%		9.5	%
Interest capitalized in ending investments in unconsolidated joint ventures (2)	$	2,941		$	665		$	4,985
Interest capitalized as a percentage of investments in unconsolidated joint ventures		2.2	%		1.3	%		7.5	%