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Restructuring (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Restructuring Cost and Reserve [Line Items]      
Restructuring charges $ 1,376 $ 0 $ 0
Payments for Restructuring (474)    
Accrued restructuring $ 902 $ 0