Commitments and Contingencies (Changes To Warranty Liability) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Movement in Standard Product Warranty Accrual [Roll Forward]
Warranty liabilities, beginning of period	$ 70,986	$ 64,681	$ 72,709	$ 66,134
Reserves provided	15,731	12,446	27,647	23,088
Payments	(17,129)	(16,815)	(31,411)	(28,914)
Other adjustments (a)	2,581	13,041	3,224	13,045
Warranty liabilities, end of period	$ 72,169	$ 73,353	$ 72,169	73,353
Florida
Movement in Standard Product Warranty Accrual [Roll Forward]
Product warranty expense				$ 12,100