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Net Income Per Share (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 25, 2013
Sep. 25, 2013
Jun. 26, 2013
Mar. 27, 2013
Dec. 26, 2012
Sep. 26, 2012
Jun. 27, 2012
Mar. 28, 2012
Dec. 25, 2013
Dec. 26, 2012
Dec. 28, 2011
Earnings Per Share [Abstract]                      
Net income $ 4,262 $ 7,031 $ 6,198 $ 7,081 $ 6,480 $ 5,363 $ 4,601 $ 5,865 $ 24,572 $ 22,309 $ 112,287
Weighted average shares outstanding - basic (in shares)                 90,829 94,949 97,646
Effect of dilutive share-based compensation awards                 2,074 1,805 1,942
Weighted average shares outstanding - diluted (in shares)                 92,903 96,754 99,588
Basic net income per share $ 0.05 [1] $ 0.08 [1] $ 0.07 [1] $ 0.08 [1] $ 0.07 [2] $ 0.06 [2] $ 0.05 [2] $ 0.06 [2] $ 0.27 $ 0.23 $ 1.15
Diluted net income per share $ 0.05 [1] $ 0.08 [1] $ 0.07 [1] $ 0.07 [1] $ 0.07 [2] $ 0.06 [2] $ 0.05 [2] $ 0.06 [2] $ 0.26 $ 0.23 $ 1.13
Anti-dilutive share-based compensation awards                 331 748 2,885
[1] Per share amounts do not necessarily sum to the total year amounts due to changes in shares outstanding and rounding
[2] Per share amounts do not necessarily sum to the total year amounts due to changes in shares outstanding and rounding.