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Restructuring, Impairment and Other Charges - Restructuring Reserve Activity (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Restructuring and Related Activities [Abstract]        
Restructuring Reserve, beginning of period     $ 11,844 $ 10,136
Liabilities incurred 4,346 2,462 21,404 4,902
Liabilities paid     (27,239) (5,347)
Restructuring Reserve, end of period $ 6,009 $ 9,691 $ 6,009 $ 9,691