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Restructuring Charges (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 Position	Mar. 31, 2013
Restructuring Charges [Abstract]
Number of workforce reduced	93
Number of workforce reduced (in hundredths)	11.00%
Restructuring charge	$ 907	$ 0

- 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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