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Goodwill and Intangible Assets (Details 2) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Change in the carrying amount of goodwill    
Beginning balance $ 51,709 $ 51,709
Accumulated impairment losses (38,416) (38,416)
Ending balance $ 13,293 $ 13,293