Note 10 - Homebuilding Accrued Liabilities and Financial Services Accounts Payable and Accrued Liabilities - Homebuilding Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Warranty accrual	$ 26,625	$ 25,666	$ 21,909	$ 20,725	$ 20,965	$ 20,678
Homebuilding Segment [Member]
Customer and escrow deposits	41,778		36,144
Warranty accrual	26,625		21,909
Accrued compensation and related expenses	35,570		32,600
Accrued interest	13,281		27,734
Construction defect claim reserves	8,388		8,406
Land development and home construction accruals	7,683		8,001
Other accrued liabilities	41,785		31,518
Total accrued liabilities	$ 175,110		$ 166,312