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Changes in Liability and Balance Related to Restructuring Plans (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Changes in the liability and the balance related restructuring plan
Beginning balance	$ 185	$ 828
Restructuring charge	764	185	1,145
Payments	(905)	(828)	(317)
Ending balance	$ 44	$ 185	$ 828

- 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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