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Other liabilities (Tables)
6 Months Ended
Jan. 31, 2015
Other Liabilities and Financial Instruments Subject to Mandatory Redemption [Abstract]  
Schedule of Other Liabilities [Table Text Block] Other liabilities consist of the following:

  January 31,
2015
  July 31,
2014
 
Accrued legal settlement $ 1,200   $ 1,600  
Capital lease obligations, net of short term   287     344  
Installment loans, net of short term   385     369  
  $ 1,872   $ 2,313