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Goodwill (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
Mar. 31, 2013
Dec. 31, 2012
Mar. 31, 2012
Dec. 31, 2011
Goodwill Impairment [Abstract]                
Goodwill $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 28,306 $ 28,148
Goodwill, Impairment Loss 0 (28,306) 0 (28,306)        
Goodwill, Translation Adjustments $ 0 $ 0 $ 0 $ 158