Note 6 - Quantitative Data Regarding Unobservable Inputs and Sensitivity Analysis (Details)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Minimum [Member]
Number of homes closed per year	0
Average sales price	418,000
Discount rates	5.00%	8.70%
Maximum [Member]
Number of homes closed per year	113
Average sales price	1,200,000
Discount rates	12.00%
Weighted Average [Member]
Number of homes closed per year	91
Average sales price	486,000
Discount rates	7.40%
Number of homes closed per year	Increase
Number of homes closed per year	Decrease
Discount rates	Decrease
Discount rates	Increase