Note 14 - Insurance and Construction Defect Claim Reserves - Summary of Insurance and Defect Claim Reserves Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Balance at beginning of period	$ 55,308	$ 52,686	$ 50,954
Expense provisions	12,650	11,213	9,697
Cash payments, net of recoveries	(8,493)	(8,591)	(9,215)
Adjustments	950	0	1,250
Balance at end of period	$ 60,415	$ 55,308	$ 52,686