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Restructuring and Other Charges Narrative (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 685us-gaap_RestructuringCharges	$ 2,700us-gaap_RestructuringCharges	$ 772us-gaap_RestructuringCharges	$ 3,353us-gaap_RestructuringCharges	$ 1,519us-gaap_RestructuringCharges
Workforce-related
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	685	1,500	765	2,148	1,506
Facilities and other
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 0	$ 1,200	$ 7	$ 1,205	$ 13

- 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.

+ References+ Details