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Supplemental Disclosure of Cash Flow Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended
Oct. 02, 2020
Sep. 27, 2019
Jul. 03, 2020
Jun. 28, 2019
Oct. 02, 2020
Sep. 27, 2019
Cash paid during period:            
Income taxes         $ 9,370 $ 14,884
Non-cash investing and financing activities:            
Unrealized gain (loss) on short-term investments $ (129) $ (30) $ (43) $ 403 (172) 373
Vested stock unit awards issued to settle accrued bonuses         8,645 7,947
Accrual for capital expenditures as of period end         322 2,326
Right-of-use asset obtained in exchange for operating lease obligations         $ 1,802 $ 28,678