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Debt (Schedule Of Minimum Principal Payments) (Details) - USD ($)
$ in Thousands
Jan. 31, 2016
Jul. 31, 2015
Debt Instrument [Line Items]    
2016 $ 768  
2017 2,417  
2018 2,792  
2019 2,143  
2020 1,815  
Notes payable principal 9,935 $ 10,529
SVB Term Note [Member]    
Debt Instrument [Line Items]    
2016 303  
2017 832  
2018 1,134  
2019 1,210  
2020 1,815  
Notes payable principal 5,294  
TCS Note [Member]    
Debt Instrument [Line Items]    
2016 465  
2017 965  
2018 1,014  
2019 261  
Notes payable principal 2,705  
DCi Notes [Member]    
Debt Instrument [Line Items]    
2017 620  
2018 645  
2019 671  
Notes payable principal $ 1,936