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Restructuring Charges - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Restructuring and Related Activities [Abstract]
Restructuring charges	$ 500,000		$ 476,000
Percentage of eliminated work force			6.00%
Pre-Tax restructuring charges	$ 500,000

- 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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