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Restructuring Plan (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Restructuring Cost and Reserve [Line Items]          
Restructuring charges $ 0 $ 0 $ 0 $ 2,522  
Restructuring Reserve, Current 0   0   49
May 2012 Restructuring Plan [Member]
         
Restructuring Cost and Reserve [Line Items]          
Restructuring Reserve         49
Restructuring charges     0    
Restructuring Reserve, Settled with Cash     49    
Restructuring Reserve, Current $ 0   $ 0