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Shareholders' Equity (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended
Nov. 01, 2013
Nov. 02, 2012
Class of Stock [Line Items]    
Adjustments related to tax withholding and stock issued for share based compensation awards $ 8,214  
Cash dividends declared (in dollars per share) $ 0.75 $ 0.50
Changes in AOCL, net of tax, related to Company's interest rate swaps [Abstract]    
Other comprehensive (loss) income, net of tax (78) 3,414
Interest Rate Swaps [Member]
   
Changes in AOCL, net of tax, related to Company's interest rate swaps [Abstract]    
AOCL, Beginning balance (6,612)  
Other comprehensive income before reclassifications 1,176  
Amounts reclassified from AOCL (1,254)  
Other comprehensive (loss) income, net of tax (78)  
AOCL, Ending balance (6,690)  
Amounts reclassified out of AOCL related to interest expense and provision for income taxes [Abstract]    
Net of tax (1,254)  
Interest Rate Swaps [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
   
Changes in AOCL, net of tax, related to Company's interest rate swaps [Abstract]    
Amounts reclassified from AOCL (1,254)  
Amounts reclassified out of AOCL related to interest expense and provision for income taxes [Abstract]    
Loss on cash flow hedges (2,041)  
Tax benefit 787  
Net of tax (1,254)  
Common Stock [Member]
   
Class of Stock [Line Items]    
Common stock issued resulting from vesting of share-based compensation awards and stock option exercises (in shares) 120,263  
Stock repurchase (in shares) 120,000  
Stock repurchase aggregate value 12,473  
Cash dividends paid (in dollars per share) $ 0.75  
Cash dividends declared (in dollars per share) $ 0.75  
Dividend record date Oct. 18, 2013  
Dividend payment date Nov. 05, 2013  
Share-based compensation expense 2,820  
Tax benefit realized upon exercise of share-based compensation awards $ 568