Accrued Liabilities (Warranties) (Details) (USD $) In Thousands	12 Months Ended
Sep. 30, 2011	Sep. 30, 2010
Accrued Liabilities
Warranties, beginning of period	$ 10,851	$ 10,005
Increases to accruals related to warranties during the period	5,402	5,555
Increases due to acquisition of IDS	2,250	0
Settlements of amounts accrued	(4,403)	(4,494)
Foreign currency exchange rate changes	(17)	(215)
Warranties, end of period	$ 14,083	$ 10,851

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The amount of acquisition cost of a business combination allocated to warranties assumed from the acquired entity.

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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. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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- Definition

Total Increase or Decrease in the standard and extended product warranty liability due to currency translation.

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Represents the aggregate decrease in the liability related to payments to satisfy claims for standard and extended product warranties.

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Represents the aggregate increase in the liability for accruals related to standard and extended product warranties issued during the reporting period.

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