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RESTRUCTURING ACTIVITIES AND ASSET IMPAIRMENTS (Details) - USD ($)
$ in Thousands
 3 Months Ended
Oct. 31, 2015
Nov. 01, 2014
Restructuring Costs [Abstract]    
Severance Costs $ 2,285  
Restructuring and asset impairment expenses 2,809 $ 555
Cash Payments    
Severance Costs 2,285  
Payments for Restructuring (1,031)  
Restructuring Cost Liability as of October 31, 2015    
Restructuring Reserve 1,778  
Asset Impairment Charges   $ 555
Employee Severance [Member]    
Restructuring Costs [Abstract]    
Severance Costs 2,285  
Cash Payments    
Severance Costs 2,285  
Restructuring Cost Liability as of October 31, 2015    
Restructuring Reserve 1,553  
Contract Termination [Member]    
Restructuring Costs [Abstract]    
Loss on Contract Termination 225  
Cash Payments    
Loss on Contract Termination 225  
Restructuring Cost Liability as of October 31, 2015    
Restructuring Reserve 225  
Other Restructuring [Member]    
Restructuring Costs [Abstract]    
Other Restructuring Costs 299  
Cash Payments    
Other Restructuring Costs 299  
Restructuring Cost Liability as of October 31, 2015    
Restructuring Reserve 0  
Cash paid for restructuring [Member]    
Restructuring Costs [Abstract]    
Severance Costs (732)  
Loss on Contract Termination 0  
Other Restructuring Costs (299)  
Cash Payments    
Severance Costs (732)  
Loss on Contract Termination 0  
Other Restructuring Costs (299)  
Minimum    
Restructuring Costs    
Restructuring and Related Cost, Expected Cost 1,200  
Maximum    
Restructuring Costs    
Restructuring and Related Cost, Expected Cost $ 2,200