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Goodwill (Schedule of Goodwill) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Goodwill [Roll Forward]          
Goodwill, Balance at the beginning of the period     $ 31,751 $ 34,073 $ 35,207
Translation adjustment     553 (424) (1,134)
Goodwill impairment (656) (1,900) (656) (1,898) 0
Goodwill, balance at the end of the period $ 31,648 $ 31,751 $ 31,648 $ 31,751 $ 34,073