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Restructuring Expense (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Restructuring activities
Lease restructuring liability at beginning of period	$ 24,830	$ 28,205	$ 26,313	$ 29,595
Cash payments	(3,726)	(3,685)	(11,137)	(11,158)
Cash received from subleases	2,355	2,483	7,329	7,065
Restructuring expense (credit)	696	(419)	1,650	1,082
Lease restructuring liability at end of period	$ 24,155	$ 26,584	$ 24,155	$ 26,584

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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- Definition

Amount of cash paid in the period to fully or partially settle a specified, previously accrued type of restructuring cost.

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