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Restructuring, Impairment and Other Charges - Restructuring Reserve Activity (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Restructuring and Related Activities [Abstract]        
Restructuring Reserve, beginning of period     $ 11,844 $ 10,136
Liabilities incurred 7,555 717 17,058 2,440
Liabilities paid     (17,788) (3,587)
Restructuring Reserve, end of period $ 11,114 $ 8,989 $ 11,114 $ 8,989