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Basic and Diluted Earnings per Common Share (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 29, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 29, 2012
Dec. 31, 2011
Jan. 01, 2011
Earnings Per Share [Abstract]                      
Net income $ 38,567 $ 31,231 $ 28,380 $ 37,943 $ 23,038 $ 31,019 $ 28,210 $ 41,161 $ 136,121 $ 123,428 $ 137,047
Weighted average shares outstanding for common stock                 136,670 135,343 136,796
Weighted average shares outstanding for participating securities                   44 333
Basic weighted average shares outstanding for common stock                 136,670 135,387 137,129
Basic earnings per common share $ 0.28 $ 0.23 $ 0.21 $ 0.28 $ 0.17 $ 0.23 $ 0.21 $ 0.31 $ 1.00 $ 0.91 $ 1.00
Basic weighted average shares outstanding for common stock                 136,670 135,387 137,129
Add: Shares of common stock assumed issued upon exercise of stock options and vesting of restricted stock                 1,779 1,494 1,033
Diluted weighted average shares outstanding for common stock                 138,449 136,881 138,162
Diluted earnings per common share $ 0.28 $ 0.22 $ 0.21 $ 0.28 $ 0.17 $ 0.23 $ 0.21 $ 0.30 $ 0.98 $ 0.90 $ 0.99