Annual report pursuant to Section 13 and 15(d)

Quarterly Data (unaudited) - Schedule of Quarterly Data (Detail)

v3.20.4
Quarterly Data (unaudited) - Schedule of Quarterly Data (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 26, 2020
Sep. 26, 2020
Jun. 27, 2020
Mar. 28, 2020
Dec. 28, 2019
Sep. 28, 2019
Jun. 29, 2019
Mar. 30, 2019
Dec. 26, 2020
Dec. 28, 2019
Dec. 29, 2018
Quarterly Financial Information Disclosure [Abstract]                      
Net sales $ 327,069 $ 398,680 $ 346,710 $ 295,836 $ 284,798 $ 317,277 $ 324,628 $ 287,659 $ 1,368,295 $ 1,214,362 $ 974,175
Operating Income (Loss) 490 35,102 20,728 9,446 (11,068) 9,952 8,546 265 65,766 7,695 27,443
Net loss $ (13,962) $ 9,304 $ (5,037) $ (14,804) $ (30,726) $ (14,068) $ (17,746) $ (22,939) $ (24,499) $ (85,479) $ (58,681)