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Product Warranty Obligation (Tables)
 9 Months Ended
Jun. 30, 2012
Product Warranties Disclosures [Abstract]  
Schedule of Product Warranty Accrual
The following table summarizes the activity associated with the product warranty accrual (in thousands) and is included on our Condensed Consolidated Balance Sheets in Other Current Liabilities:
 
Three months ended June 30,
 
Balance at
 
Warranties
 
Settlements
 
Balance at
Fiscal year
April 1
 
issued
 
made
 
June 30
2012
$
981

 
$
132

 
$
(115
)
 
$
998

2011
$
846

 
$
288

 
$
(185
)
 
$
949

 
Nine months ended June 30,
 
Balance at
 
Warranties
 
Settlements
 
Balance at
Fiscal year
October 1
 
issued
 
made
 
June 30
2012
$
941

 
$
497

 
$
(440
)
 
$
998

2011
$
877

 
$
642

 
$
(570
)
 
$
949