Summary of Significant Accounting Policies - Schedule of basic and diluted loss per common share (Detail) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 26, 2021	Jun. 27, 2021	Mar. 28, 2021	Sep. 27, 2020	Jun. 28, 2020	Mar. 29, 2020	Sep. 26, 2021	Sep. 27, 2020
Numerator:
Net Income (Loss) Attributable to Parent	$ (30,200)	$ 23,098	$ (2,056)	$ 13,543	$ 12,509	$ 4,852	$ (9,158)	$ 30,904
Denominator: Weighted Average
Weighted Average Number of Shares Outstanding, Basic and Diluted	106,285,072			67,673,884			80,735,661	67,673,884