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Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 25, 2020
Sep. 27, 2019
Sep. 25, 2020
Sep. 27, 2019
Statement Of Income And Comprehensive Income [Abstract]        
Net income $ 2,986 $ 6,909 $ 4,580 $ 20,992
Foreign currency translation adjustment 907 (1,056) (879) (1,071)
Total comprehensive income $ 3,893 $ 5,853 $ 3,701 $ 19,921