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PROPERTY, PLANT AND EQUIPMENT
 12 Months Ended
Sep. 30, 2018
PROPERTY, PLANT AND EQUIPMENT [Abstract]  
PROPERTY, PLANT AND EQUIPMENT
5. PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment consisted of the following:

 
 
September 30,
 
 
 
2018
  
2017
 
Land
 
$
17,525
  
$
17,823
 
Buildings
  
103,601
   
104,057
 
Machinery and equipment
  
195,434
   
187,649
 
Furniture and fixtures
  
7,575
   
6,770
 
Information systems
  
34,271
   
32,748
 
Capital lease
  
1,200
   
-
 
Construction in progress
  
17,001
   
10,439
 
Total property, plant and equipment
  
376,607
   
359,486
 
Less: accumulated depreciation
  
(265,204
)
  
(253,125
)
Net property, plant and equipment
 
$
111,403
  
$
106,361
 

Depreciation expense was $17,255, $17,195 and $16,915 for the years ended September 30, 2018, 2017 and 2016, respectively.

In fiscal 2017 we recorded $860 in impairment expense related to a surplus research and development asset, and we recorded a $1,820 gain on sale of surplus research and development equipment.  We did not record any impairment expense on property, plant and equipment in fiscal 2018 and 2016.