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Deferred Stock Activity (Detail) (Deferred Stock Activity, USD $)
 12 Months Ended
Dec. 28, 2013
Dec. 29, 2012
Dec. 31, 2011
Deferred Stock Activity
      
Number of Shares      
Number of Shares, Balance at beginning of year 378,000 347,000 360,000
Number of shares, Issued 149,000 99,000 114,000
Number of shares, Exercised (81,000) (68,000) (127,000)
Number of shares, Balance at end of year 446,000 378,000 347,000
Outstanding vested at end of year 269,000 240,000 192,000
Outstanding unvested at end of year 177,000 138,000 155,000
Shares vesting during the year 110,000 116,000 133,000
Weighted Average Fair Value      
Weighted Average Fair Value, Balance at beginning of period $ 11.49 $ 10.95 $ 10.07
Weighted Average Fair Value, Initial grant $ 20.32 $ 13.74 $ 12.90
Weighted Average Fair Value, Rights exercised $ 12.91 $ 12.01 $ 10.20
Weighted Average Fair Value, Balance at end of period $ 14.19 $ 11.49 $ 10.95
Outstanding vested at end of year $ 11.08 $ 10.66 $ 10.07
Outstanding unvested at end of year $ 18.92 $ 12.96 $ 12.05
Shares vesting during the year $ 13.37 $ 12.42 $ 10.30