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Commitments and Contingencies (Changes To Warranty Liability) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]        
Warranty liabilities, beginning of period $ 61,986 $ 61,914 $ 63,992 $ 64,098
Reserves provided 12,375 15,322 33,036 36,079
Payments (12,674) (10,551) (34,586) (32,330)
Other adjustments (222) (1,602) (977) (2,764)
Warranty liabilities, end of period $ 61,465 $ 65,083 $ 61,465 $ 65,083