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Property, Plant and Equipment (Tables)
 12 Months Ended
Sep. 30, 2015
Property, Plant and Equipment  
Summary of the major classes of property, plant and equipment

 

 

 

 

 

 

 

 

 

 

September 30,

 

 

    

2014

    

2015

 

Land and land improvements

 

$
6,785

 

$
6,992

 

Buildings

 

 
24,750

 

 
36,326

 

Machinery and equipment

 

 
213,834

 

 
251,701

 

Construction in process

 

 
27,635

 

 
7,400

 

 

 

 
273,004

 

 
302,419

 

Less accumulated depreciation

 

 
(98,921)

 

 
(117,068)

 

 

 

$
174,083

 

$
185,351