XML 44 R53.htm IDEA: XBRL DOCUMENT v3.3.0.814
Share-Based Compensation, Nonvested Stock (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Jul. 31, 2015
Aug. 01, 2014
Aug. 02, 2013
Nonvested Stock [Member]      
Nonvested stock, shares [Roll Forward]      
Unvested, beginning of period (in shares) 64,065    
Granted (in shares) 74,089    
Vested (in shares) (98,991)    
Forfeited (in shares) 0    
Unvested, end of period (in shares) 39,163 64,065  
Nonvested stock, weighted-average grant date fair value [Roll Forward]      
Unvested, beginning of period (in dollars per share) $ 68.25    
Granted (in dollars per share) 101.58    
Vested (in dollars per share) 82.35    
Forfeited (in dollars per share) 0    
Unvested, end of period (in dollars per share) $ 95.66 $ 68.25  
Total fair value of nonvested stock $ 8,152 $ 17,417 $ 7,445
Nonvested Stock [Member] | Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 1 year    
Nonvested Stock [Member] | Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 3 years    
2015 LTPP [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Nonvested stock earned (in shares) 49,072    
2015 LTPP [Member] | Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Performance period 2015    
Vesting period 2 years    
2015 LTPP [Member] | Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Performance period 2016    
Vesting period 3 years    
2014 LTPP [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Nonvested stock earned (in shares) 37,126    
2014 LTPP [Member] | Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Performance period 2014    
Vesting period 2 years    
2014 LTPP [Member] | Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Performance period 2015    
Vesting period 3 years