Note 22 - Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Share-based Payment Arrangement, Activity [Table Text Block]

	Year Ended December 31,
	2019			2018			2017
Expected lives of options (years)		9.5			9.1			N/A
Expected volatility		29.9	%		29.7	%		N/A
Risk free interest rate		1.7	%		3.0	%		N/A
Dividend yield rate		3.4	%		3.9	%		N/A

Share-based Payment Arrangement, Option, Activity [Table Text Block]

	Year Ended December 31,
	2019					2018					2017
				Weighted-					Weighted-					Weighted-
				Average					Average					Average
	Number of			Exercise		Number of			Exercise		Number of			Exercise
	Shares			Price		Shares			Price		Shares			Price
Outstanding Stock Option Activity
Outstanding, beginning of year		5,974,433		$	23.50		6,094,033		$	23.35		7,175,816		$	24.20
Granted		412,247			35.55		486,000			28.45		-			N/A
Exercised		(987,496	)		25.65		(393,571	)		25.06		(411,249	)		23.00
Forfeited		-			N/A		(9,950	)		20.46		-			N/A
Cancelled		-			N/A		(202,079	)		27.94		(670,534	)		32.63
Outstanding, end of year		5,399,184		$	24.00		5,974,433		$	23.50		6,094,033		$	23.35

Schedule of Nonvested Share Activity [Table Text Block]

	Year Ended December 31,
	2019					2018					2017
				Weighted-					Weighted-					Weighted-
	Number of			Average		Number of			Average		Number of			Average
	Shares			Fair Value		Shares			Fair Value		Shares			Fair Value
Unvested Stock Option Activity
Outstanding, beginning of year		483,542		$	6.26		135,481		$	5.76		2,670,744		$	4.72
Granted		412,247			7.88		486,000			6.32		-			N/A
Vested		(195,541	)		5.93		(127,989	)		6.18		(2,535,263	)		4.66
Forfeited		-			N/A		(9,950	)		3.90		-			N/A
Unvested, end of year		700,248		$	7.20		483,542		$	6.26		135,481		$	5.76

Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block]

Exercisable or expected to vest
Number outstanding		5,397,398
Weighted-average exercise price	$	24.00
Aggregate intrinsic value (in thousands)	$	76,431
Weighted-average remaining contractual term (years)		4.75
Exercisable
Number outstanding		4,698,936
Weighted-average exercise price	$	22.75
Aggregate intrinsic value (in thousands)	$	72,411
Weighted-average remaining contractual term (years)		4.12

Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block]

				Options Outstanding						Options Exercisable
						Weighted-						Weighted-
						Average						Average
						Remaining		Weighted-				Remaining		Weighted-
						Contractual		Average				Contractual		Average
				Number		Life (in		Exercise		Number		Life (in		Exercise
Range of Exercise Price				Outstanding		years)		Price		Outstanding		years)		Price
$ 15.01	-	$	20.00		1,269,604		2.26	$	19.89		1,260,418		2.24	$	19.90
$ 20.01	-	$	25.00		2,894,522		4.97		23.17		2,891,460		4.96		23.17
$ 25.01	-	$	30.00		804,440		5.58		27.40		516,440		4.01		26.78
$ 30.01	-	$	35.00		30,618		3.08		32.37		30,618		3.08		32.37
$ 35.01	-	$	40.00		400,000		9.59		35.55		-		NA		N/A
Total					5,399,184		4.75	$	24.00		4,698,936		4.12	$	22.75

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

	Year Ended December 31,
	2019					2018					2017
				Weighted-					Weighted-					Weighted-
				Average					Average					Average
	Number of			Grant Date		Number of			Grant Date		Number of			Grant Date
	Shares			Fair Value		Shares			Fair Value		Shares			Fair Value
Unvested, beginning of year		337,909		$	25.61		317,390		$	23.89		221,133		$	19.85
Granted		167,676			33.85		143,214			29.51		160,620			27.42
Vested		(156,235	)		27.24		(117,404	)		25.45		(57,375	)		22.57
Forfeited		(5,292	)		30.56		(5,292	)		28.84		(6,988	)		21.81
Unvested, end of year		344,058		$	30.54		337,909		$	25.61		317,390		$	23.89

Share-based Payment Arrangement, Performance Shares, Outstanding Activity [Table Text Block]

				Threshold Goal			Target Goal			Maximum Goal
Date of Award	Performance Period	Base Period	Base Period Revenues	PSUs		Home Sale Revenues	PSUs		Home Sale Revenues	PSUs		Home Sale Revenues	Fair Value per Share		Maximum Potential Expense to be Recognized*		Maximum Remaining Expense to be Recognized*
July 25, 2016	July 1, 2016 to June 30, 2019	July 1, 2015 to June 30, 2016	$1.975  billion		137,781	$2.074  billion		275,562	$2.173  billion		551,124	$2.370  billion	$	19.66	$	10,834	$	-
June 20, 2017	April 1, 2017 to  March 31, 2020	April 1, 2016 to March 31, 2017	$2.426  billion		144,342	$2.547  billion		288,684	$2.669  billion		577,368	$2.911  billion	$	27.83	$	16,070	$	1,446
May 23, 2018	April 1, 2018 to  March 31, 2021	April 1, 2017 to  March 31, 2018	$2.543  billion		145,800	$2.670  billion		291,600	$2.797  billion		583,200	$3.052  billion	$	25.57	$	14,915	$	8,623
August 5, 2019	January 1, 2019 to  December 31, 2021	January 1, 2018 to  December 31, 2018	$2.982  billion		135,000	$3.131  billion		270,000	$3.280  billion		540,000	$3.578  billion	$	32.60	$	17,604	$	17,604