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Restructuring - Schedule of Company's Restructuring Activity (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Restructuring and Related Activities [Abstract]
Balance at December 31
Charged to expense	1,223	1,126	1,970	1,364
Payments			(1,580)
Balance at September 30	$ 390		$ 390

- 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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