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Goodwill and Intangible Assets (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
Goodwill [Roll Forward]        
Net book value at December 31, 2012     $ 4,502  
Goodwill impairment loss (4,462) 0 (4,462) 0
Foreign currency translation     (40)  
Net book value at June 30, 2013 $ 0   $ 0