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Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 28, 2019
Sep. 29, 2018
Sep. 28, 2019
Sep. 29, 2018
Unrealized holding gains (losses) on available-for-sale investments, tax expense (benefit) $ 83 $ 2 $ 577 $ (231)