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LONG-TERM DEBT (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Apr. 30, 2016
May. 02, 2015
Apr. 30, 2016
May. 02, 2015
Aug. 01, 2015
Long-term debt instrument          
Proceeds from borrowings of long-term debt     $ 0 $ 150,000  
Repayments of Long-term Debt     8,320 8,252  
Long term debt, including current portion, carrying value $ 178,073   178,073   $ 186,393
Interest expense 4,384 $ 3,920 11,734 10,729  
Term loan          
Long-term debt instrument          
Repayments of Long-term Debt     2,500    
Long term debt, including current portion, carrying value 132,500   132,500    
Capital lease obligation          
Long-term debt instrument          
Interest Expense, Lessee, Assets under Capital Lease $ 400 $ 400 $ 1,300 500  
Lease Term     10 years    
Effective interest rate on debt 12.38%   12.38%    
Capital Lease Obligation $ 13,800   $ 13,800    
Sale Leaseback Financing Obligation          
Long-term debt instrument          
Long term debt, including current portion, carrying value $ 31,800   $ 31,800    
Effective interest rate on debt 7.32%   7.32%    
Interest expense $ 600   $ 1,800 $ 1,900  
Minimum | Term loan          
Long-term debt instrument          
Long term debt, including current portion, carrying value 10,000   10,000    
Maximum | Term loan          
Long-term debt instrument          
Long term debt, including current portion, carrying value $ 50,000   $ 50,000    
Base Rate [Member] | Term loan          
Long-term debt instrument          
Debt Instrument, Description of Variable Rate Basis     administrative agent's prime rate    
initial applicable margin     1.50%    
Federal Funds Effective Swap Rate [Member] | Term loan          
Long-term debt instrument          
Debt Instrument, Description of Variable Rate Basis     overnight federal funds effective rate    
Debt Instrument, Basis Spread on Variable Rate     0.50%    
One-month LIBOR | Term loan          
Long-term debt instrument          
Debt Instrument, Description of Variable Rate Basis     one-month LIBOR    
Debt Instrument, Basis Spread on Variable Rate     1.00%    
LIBOR | Term loan          
Long-term debt instrument          
Debt Instrument, Description of Variable Rate Basis     one, two, three or six months or, if approved by all affected lenders, nine months    
initial applicable margin     2.50%