Annual report pursuant to Section 13 and 15(d)

Property, plant, and equipment (Tables)

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Property, plant, and equipment (Tables)
 12 Months Ended
Jul. 31, 2013
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment [Table Text Block] At July 31, 2013 and 2012 property, plant, and equipment consist of:

    2013     2012  
Building and building improvements   $ 4,751     $ 4,751  
Machinery and equipment (includes asset under capital lease – see   Note 9)     6,922       6,760  
Office furniture and computer equipment     16,390       14,879  
Leasehold improvements     4,759       4,498  
      32,822       30,888  
Accumulated depreciation and amortization     (24,917 )     (22,484 )
      7,905       8,404  
Land and land improvements     712       712  
    $ 8,617     $ 9,116