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Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Mar. 31, 2019
Jul. 01, 2018
Jun. 30, 2019
Jul. 01, 2018
Income Tax Disclosure [Abstract]          
Income tax expense $ 246 $ 13,600 $ 302 $ 13,865 $ (202)