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Accumulated Other Comprehensive Loss (Tables)
 9 Months Ended
Jun. 30, 2013
Equity [Abstract]  
Components of Accumulated Other Comprehensive Loss
The components of accumulated other comprehensive loss are as follows:
 
June 30,
2013
 
September 30,
2012
Foreign currency translation adjustment, net of tax
$
(5,851
)
 
$
(5,566
)
Retirement plan liability adjustment, net of tax
(5,825
)
 
(6,720
)
Interest rate swap agreement adjustment, net of tax
(15
)
 
(58
)
Total accumulated other comprehensive loss
$
(11,691
)
 
$
(12,344
)