Note 12 - Insurance and Construction Defect Claim Reserves - Summary of Insurance and Defect Claim Reserves Activity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Balance at beginning of period	$ 49,647	$ 46,900	$ 50,954	$ 45,811
Expense provisions	2,383	1,888	6,884	5,222
Cash payments, net of recoveries	(1,535)	(635)	(7,343)	(2,880)
Balance at end of period	$ 50,495	$ 48,153	$ 50,495	$ 48,153