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Other Balance Sheet Items Other Balance Sheet Items (Goodwill and Other Intangible Assets) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Balance Sheet Related Disclosures [Abstract]    
Goodwill, Gross $ 1,537,843 $ 1,537,843
Goodwill, Impaired, Accumulated Impairment Loss (1,485,316) (1,485,316)
Intangible Assets, Net (Excluding Goodwill) 0 1,321
Goodwill and Other Intangible Assets $ 52,527 $ 53,848