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Debt (Schedule Of Minimum Principal Payments) (Details) - USD ($)
$ in Thousands
Oct. 31, 2016
Jul. 31, 2016
Debt Instrument [Line Items]    
2017 $ 1,876  
2018 2,793  
2019 2,142  
2020 1,815  
Notes payable principal 8,626 $ 9,168
Term Loan [Member] | SVB 2014 Modification Agreement [Member]    
Debt Instrument [Line Items]    
2017 681  
2018 1,134  
2019 1,210  
2020 1,815  
Notes payable principal 4,840  
Promissory Note [Member] | TCS Notes [Member]    
Debt Instrument [Line Items]    
2017 728  
2018 1,014  
2019 261  
Notes payable principal 2,003  
Promissory Note [Member] | DCi Notes [Member]    
Debt Instrument [Line Items]    
2017 467  
2018 645  
2019 671  
Notes payable principal $ 1,783