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Subsequent Events - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Subsequent Event [Line Items]
Restructuring charges	$ 5,250,000	$ 0	$ 6,416,000	$ 0	$ 3,300,000
Scenario, Forecast [Member]
Subsequent Event [Line Items]
Restructuring charges			$ 800,000

- 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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