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Property, Buildings and Equipment, net
12 Months Ended
Jul. 31, 2019
Property, Buildings and Equipment, net [Abstract]  
Property, Buildings and Equipment, net
9.
Property, Buildings and Equipment, net

Property, buildings and equipment is summarized in the following table.

 
 
July 31,
 
 
 
2019
  
2018
 
 
 
(in thousands)
 
       
Land and land improvements
 
$
393
  
$
393
 
Buildings and building improvements
  
7,471
   
7,455
 
Field equipment
  
1,949
   
1,970
 
Computer equipment
  
4,015
   
4,156
 
Computer software
  
2,981
   
2,940
 
Office furniture and equipment
  
1,964
   
2,142
 
Vehicles
  
884
   
1,134
 
Other
  
662
   
479
 
 
  
20,319
   
20,669
 
Accumulated depreciation and amortization
  
(17,066
)
  
(16,799
)
Property, buildings and equipment, net 
 
$
3,253
  
$
3,870