Annual report pursuant to Section 13 and 15(d)

Quarterly Results of Operations (unaudited) (Details)

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Quarterly Results of Operations (unaudited) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 4 Months Ended 12 Months Ended
Dec. 29, 2013
restaurant
Oct. 06, 2013
Jul. 14, 2013
Apr. 02, 2013
Dec. 30, 2012
Sep. 30, 2012
Jul. 08, 2012
Apr. 15, 2012
Dec. 29, 2013
restaurant
Dec. 30, 2012
Dec. 25, 2011
restaurant
Quarterly Financial Information Disclosure [Abstract]                      
Total revenues $ 241,926 [1] $ 230,673 $ 238,299 $ 306,349 $ 240,679 $ 213,317 $ 223,677 $ 299,459 $ 1,017,247 $ 977,132 $ 914,850
Income from operations 8,077 [1] 6,802 15,389 13,546 12,203 5,836 11,423 15,747 43,814 45,209 28,001
Net income 6,959 [1] 4,661 11,139 9,480 6,492 3,533 7,748 10,558 32,239 28,331 20,577
Basic earning per share (in dollars per share) $ 0.49 [1] $ 0.33 $ 0.78 $ 0.67 $ 0.46 $ 0.25 $ 0.53 $ 0.72 $ 2.27 $ 1.97 $ 1.36
Diluted earning per share (in dollars per share) $ 0.48 [1] $ 0.32 $ 0.77 $ 0.66 $ 0.45 $ 0.24 $ 0.52 $ 0.71 $ 2.22 $ 1.93 $ 1.34
Number of restaurants impaired 4               4   3
Pre-tax non-cash impairment charge $ 1,500               $ 1,517 $ 0 $ 4,337
Duration of fiscal period 91 days 84 days 84 days 112 days 84 days 84 days 84 days 112 days 364 days 371 days 364 days
[1] During the fourth quarter of fiscal 2013, it was determined that four Company-owned restaurants were impaired. The Company recognized a pre-tax non-cash impairment charge of $1.5 million for these restaurants.