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Restructuring (Restructuring Accrual) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Restructuring accrual
Balance as of January 1, 2014	$ 3,128us-gaap_RestructuringReserve
Expenses incurred	7,434us-gaap_RestructuringCharges
Payments made	(2,308)us-gaap_PaymentsForRestructuring
Balance, December 31, 2014	$ 8,254us-gaap_RestructuringReserve

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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