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Changes in Liability and Balance Related to Restructuring Plan (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Changes in the liability and the balance related restructuring plan
Balance at beginning of the period	$ 44	$ 185
Restructuring charges	9	462
Payments	(8)	(201)
Balance at end of the period	$ 45	$ 446

- 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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