Note 7 - Inventories (Details) - USD ($)	3 Months Ended				9 Months Ended
	Sep. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Note 7 - Inventories (Details) [Line Items]
Inventory, Real Estate, Land and Land Development Costs	$ 957,695,000				$ 957,695,000		$ 935,268,000
Inventory Write-down	3,225,000	$ 350,000		$ 850,000	3,575,000	$ 850,000
Land Held for Sale [Member]
Note 7 - Inventories (Details) [Line Items]
Inventory, Real Estate, Land and Land Development Costs	6,900,000				6,900,000		$ 0
Fair Value, Inputs, Level 2 [Member] | Land Held for Sale [Member]
Note 7 - Inventories (Details) [Line Items]
Inventory Write-down	$ 1,100,000		$ 0		$ 1,100,000	$ 0