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Share-Based Compensation - Weighted-Average Assumptions Used for Grants of Stock Options and SARs (Detail) (USD $)
6 Months Ended
Jun. 28, 2014
Jun. 29, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected dividend yield 0.00% 0.00%
Forfeiture rate 10.32% 10.31%
Risk free interest rate, minimum 0.02% 0.02%
Risk free interest rate, maximum 2.61% 1.78%
Expected weighted-average life 5 years 4 months 10 days 5 years 5 months 1 day
Fair value of stock appreciation rights (SARs) granted $ 4,211,000 $ 4,443,000
Weighted-average grant date fair value of SARs granted $ 25.02 $ 13.83
Stock Option and Stock Appreciation Rights (SARs) [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Volatility 34.92% 32.00%
Risk free interest rate 1.73% 0.82%