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Restructuring Costs - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014
Restructuring Cost and Reserve [Line Items]
Consolidated charge to earnings	$ 463,000us-gaap_RestructuringCharges
Restructuring Plan 2014 [Member]
Restructuring Cost and Reserve [Line Items]
Consolidated charge to earnings	$ 463,000
Number of employees terminated by the restructuring plan	11
The total number of employees affected by the restructuring plan	11

- 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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