Note 3 - Business Acquisitions (Details) - The Ryland Group, Inc. [Member] $ / shares in Units, $ in Thousands		3 Months Ended
	Oct. 01, 2015 USD ($) $ / shares	Dec. 31, 2015 USD ($)
Note 3 - Business Acquisitions (Details) [Line Items]
undefined	1.0191
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	$ 1,972,284	$ 2,000,000
Share Price (in Dollars per share) | $ / shares	$ 40.46
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	$ 30,600
Goodwill	$ 933,360
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual		772,300
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual		$ (1,800)
Reverse Stock Split [Member]
Note 3 - Business Acquisitions (Details) [Line Items]
Stockholders' Equity Note, Stock Split, Conversion Ratio	5