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Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 14, 2015
Jun. 15, 2014
Jun. 14, 2015
Jun. 15, 2014
Statement Of Income And Comprehensive Income [Abstract]        
Net income $ 45,909 $ 38,462 $ 92,198 $ 78,936
Other comprehensive income (loss), before tax:        
Currency translation adjustment 77 241 (733) (785)
Tax attributes of items in other comprehensive income (loss):        
Currency translation adjustment 84 (31) 465 411
Other comprehensive income (loss), net of tax 161 210 (268) (374)
Comprehensive income $ 46,070 $ 38,672 $ 91,930 $ 78,562