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Stock Option Plans - Additional Information (Detail) (USD $)
0 Months Ended 3 Months Ended
Oct. 10, 2005
Mar. 29, 2014
Mar. 07, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Effective date for stock options plan Oct. 10, 2005    
Increase in number of shares reserved and available for issuance in different forms   4.50%  
Document Period End Date   Mar. 29, 2014  
Share Price     $ 43.35
Stock Options
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Minimum period for expiration of options in case of employee termination   60 days  
Maximum period for expiration of options in case of employee termination   90 days  
Stock Options | Minimum
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period for options   0 years  
Minimum expiration period for options   7 years  
Stock Options | Maximum
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period for options   5 years  
Minimum expiration period for options   10 years  
Common stock | Executive Officer [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common stock granted   33,938  
Time-based Restricted Stock Unit [Member] | Executive Officer [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted stock units granted   59,433  
Performance-based Restricted Stock Unit [Member] | Executive Officer [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted stock units granted   29,717  
2005 Plan
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares reserved for issuance in different forms 1,583,682    
Share based compensation arrangement shares available for grant   5,031,694