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Workforce Reduction (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	3 Months Ended
	Jan. 08, 2014	Mar. 31, 2014
Restructuring
Reduction in workforce (as a percent)	10.00%
Employee severance, benefits and related costs
Restructuring
Restructuring-related costs		$ 4.3

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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