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Product Warranty Obligation (Tables)
 9 Months Ended
Jun. 30, 2017
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 within current liabilities:
 
Balance at
 
Warranties
 
Settlements
 
Balance at
Period
April 1
 
issued
 
made
 
June 30
Three months ended June 30, 2017
$
892

 
$
248

 
$
(165
)
 
$
975

Three months ended June 30, 2016
$
944

 
$
404

 
$
(213
)
 
$
1,135

 
 
 
 
 
 
 
 
 
Balance at
 
Warranties
 
Settlements
 
Balance at
Period
October 1
 
issued
 
made
 
June 30
Nine months ended June 30, 2017
$
1,033

 
$
479

 
$
(537
)
 
$
975

Nine months ended June 30, 2016
$
1,014

 
$
696

 
$
(575
)
 
$
1,135