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Property, Plant and Equipment (Tables)
 12 Months Ended
Sep. 30, 2019
Property, Plant and Equipment  
Summary of the major classes of property, plant and equipment

 

 

 

 

 

 

 

 

 

 

September 30,

 

 

    

2018

    

2019

 

Land and land improvements

 

$

9,462

 

$

9,446

 

Buildings and improvements

 

 

45,327

 

 

45,486

 

Machinery and equipment

 

 

281,329

 

 

293,542

 

Construction in process

 

 

7,292

 

 

2,770

 

 

 

 

343,410

 

 

351,244

 

Less accumulated depreciation

 

 

(164,010)

 

 

(181,278)

 

 

 

$

179,400

 

$

169,966