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Reduction in Force (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended
	Jan. 31, 2013	Mar. 31, 2013
Reduction in Force
Total expected cost related to reduction in force	$ 1.6
Cost incurred related to reduction in force		$ 1.0

Amount expected to be charged against earnings in the current and future periods for the specified restructuring cost.

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- Definition

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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