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Product Warranty Obligation
3 Months Ended
Dec. 31, 2011
Product Warranty Obligation/Contingencies [Abstract]  
PRODUCT WARRANTY OBLIGATION
9. PRODUCT WARRANTY OBLIGATION
In general, we warrant our products to be free from defects in material and workmanship under normal use and service. The warranty periods generally range from one to five years. We have the option to either repair or replace products we deem defective with regard to material or workmanship. Estimated warranty costs are accrued in the period that the related revenue is recognized based upon an estimated average per unit repair or replacement cost applied to the estimated number of units under warranty. These estimates are based upon historical warranty incidents and are evaluated on an ongoing basis to ensure the adequacy of the warranty accrual.
The following table summarizes the activity associated with the product warranty accrual (in thousands):
                                 
    Three months ended December 31,
    Balance at   Warranties   Settlements   Balance at
Fiscal year   October 1   issued   made   December 31
2012
  $ 941     $ 220     $ (154 )   $ 1,007  
2011
  $ 877     $ 118     $ (155 )   $ 840  
We are not responsible and do not warrant that custom software versions, created by original equipment manufacturer (OEM) customers, based upon our software source code will function in a particular way, will conform to any specifications or are fit for any particular purpose. Further, we do not indemnify these customers from any third-party liability as it relates to or arises from any customization or modifications made by the OEM customer.