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Goodwill and Intangible Assets - Changes in Carrying Amount of Goodwill (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 26, 2019
Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]    
Balance, January 1   $ 119,880
Goodwill acquired   31,358
Balance, December 31 $ 31,200 $ 151,238