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Condensed Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 18, 2017
Jun. 19, 2016
Jun. 18, 2017
Jun. 19, 2016
Statement of Comprehensive Income [Abstract]        
Net income $ 65,741 $ 49,261 $ 128,210 $ 94,712
Other comprehensive income, before tax:        
Currency translation adjustment 215 456 282 1,113
Tax attributes of items in other comprehensive income:        
Currency translation adjustment   (68)   (140)
Other comprehensive income, net of tax 215 388 282 973
Comprehensive income $ 65,956 $ 49,649 $ 128,492 $ 95,685