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Share Based Payment Arrangements - Additional Information (Detail)
9 Months Ended
Jan. 29, 2016
May 01, 2015
shares
Sep. 24, 2016
USD ($)
EquityPlan
shares
Sep. 26, 2015
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of employee equity incentive plans | EquityPlan     2  
Income tax benefit realized on disqualifying dispositions of stock acquired by exercise of incentive stock options | $     $ 261,000 $ 348,000
2013 Directors Stock Compensation Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Common stock authorized for issuance     115,000  
Common stock reserved for issuance     86,572  
Employee Stock Option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost expected to be recognized over period, years     1 year  
Total intrinsic value of stock options exercised during periods | $     $ 1,938,000 2,542,000
Unrecognized compensation cost | $     $ 600,000  
Non-vested Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock awards granted     26,033  
Unrecognized compensation cost, other than options | $     $ 1,228,000  
Unrecognized compensation cost expected to be recognized over period, years     1 year 8 months 12 days  
Terms of award     The Company's common stock on the date of grant. Shares of non-vested restricted stock are generally subject to vesting in three equal annual installments or 100% on the first, third or fifth anniversary of the date of the grant.  
Restricted Stock Units (RSUs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Discount rate on stock awards     7.00%  
Stock awards granted     79,810  
Recognized share-based compensation expense | $     $ 1,322,000 $ 3,446,000
Unrecognized compensation cost expected to be recognized over period, years     2 years 10 months 24 days  
Restricted Stock Units (RSUs) | January 2016 Grant        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
RSU awards vesting period 5 years      
Percentage of target available for common share issuance 100.00%      
Restricted Stock Units (RSUs) | Prior to 2016 Grant        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
RSU awards vesting period 5 years      
Restricted Stock Units (RSUs) | January 2015 Grant        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of target available for common share issuance 100.00%      
Restricted Stock Units (RSUs) | May 2015 Grant        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of target available for common share issuance   100.00%    
Stock awards granted   20,000    
Maximum | Restricted Stock Units (RSUs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost, other than options | $     $ 26,600,000  
Maximum | Restricted Stock Units (RSUs) | January 2016 Grant        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Maximum percentage of target available for common share issuance 200.00%      
Maximum | Restricted Stock Units (RSUs) | January 2015 Grant        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Maximum percentage of target available for common share issuance 200.00%      
Maximum | Restricted Stock Units (RSUs) | Prior to 2015 grant        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Maximum percentage of target available for common share issuance 100.00%      
Maximum | Restricted Stock Units (RSUs) | May 2015 Grant        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Maximum percentage of target available for common share issuance   150.00%    
Other Stock Compensation Plans        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Common stock reserved for issuance     5,159,100  
2011 Equity Incentive Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Common stock authorized for issuance     6,000,000