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Contingencies (Tables)
 12 Months Ended
Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]  
Warranty reserves
Our warranty reserves are as follows (in thousands):
 
Fiscal Year Ended September 30,
 
2013
 
2012
 
2011
Balance at beginning of period
$
15,477

 
$
17,916

 
$
25,821

Accruals for warranties issued
5,897

 
6,540

 
5,665

Changes in liability related to warranties existing in prior periods
(2,856
)
 
(2,677
)
 
(2,790
)
Payments made
(6,855
)
 
(6,302
)
 
(10,780
)
Balance at end of period
$
11,663

 
$
15,477

 
$
17,916