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Operating Leases
12 Months Ended
Jul. 31, 2012
Operating Leases [Abstract]  
Operating Leases
Note 9.
Operating Leases

The Company leases various equipment, a portion of its facilities in O'Fallon, Missouri and the facility in King of Prussia, Pennsylvania under operating leases.  The O'Fallon, Missouri lease expires in February 2016 and the King of Prussia, Pennsylvania lease has been renewed through October 2015.

The approximate minimum rental commitment under non-cancelable operating leases as of July 31, 2012 is due as follows (dollars in thousands):

Year Ending July 31,
 
Amount
 
2013
 $355 
2014
  326 
2015
  226 
2016
  80 
2017
  -- 
   $987 
 
Rent expense incurred and charged to cost of sales and selling, general and administrative expenses was approximately $353,000, $358,000 and $268,000 for the years ended July 31, 2012, 2011 and 2010, respectively.