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Other Balance Sheet Information Product Warranty and Retrofit Activity on Gross Basis (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Beginning Balance	$ 7,349	$ 7,329
Adjustments for acquisitions and divestitures	0	962
Accruals	1,916	2,363
Costs incurred	(2,419)	(2,930)
Ending Balance	$ 6,846	$ 7,724

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

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