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Restructuring Activities	9 Months Ended
Restructuring Activities	Sep. 30, 2011
Restructuring Activities [Abstract]
Restructuring Activities	(13) Restructuring Activities At December 31, 2010, the Company had a liability (reflected in “Other long-term liabilities”) of $6.7 million related to permanently ceasing to use certain leased facilities. During the nine months ended September 30, 2011, the Company made cash payments of $0.9 million and accrued $0.3 million related to accretion expense, resulting in a remaining liability of $6.1 million as of September 30, 2011.