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Property, Plant and Equipment.
3 Months Ended
Oct. 31, 2011
Property, Plant and Equipment. [Abstract]  
Property, Plant and Equipment.
(5) Property, Plant and Equipment. Property, plant and equipment and related accumulated depreciation and amortization are summarized as follows (in thousands):
                 
    October 31,     July 31,  
    2011     2011  
Land
  $ 9,944     $ 10,081  
Buildings & improvements
    36,128       35,795  
Equipment
    44,837       44,098  
Leasehold improvements
    143       143  
 
           
 
    91,052       90,117  
Less accumulated depreciation and amortization
    (25,892 )     (24,388 )
 
           
 
    65,160       65,729  
Construction-in-progress
    6,607       6,097  
 
           
Property, plant and equipment, net
  $ 71,767     $ 71,826