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Restructuring Expenses - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 3,660
Number of positions reduced	83

- 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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