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Warranty (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Movement in Standard Product Warranty Accrual [Roll Forward]    
Warranty Accrual, Beginning $ 16,295 $ 16,748
Warranties Issued 19,779 17,667
Warranty Payments (19,179) (18,343)
Warranty Accrual, Currency Translation, Increase (Decrease) 96 223
Warranty Accrual, Ending $ 16,991 $ 16,295