Commitments And Contingencies (Changes To Warranty Liability) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Changes to warranty liabilities [Roll Forward]
Warranty liabilities, beginning of period	$ 64,098	$ 68,025	$ 80,195
Warranty reserves provided	49,399	45,705	43,875
Payments	(44,925)	(45,365)	(54,766)
Other adjustments	(4,580)	(4,267)	(1,279)
Warranty liabilities, end of period	$ 63,992	$ 64,098	$ 68,025