Revenue - Schedule of Disaggregation of Revenue by Timing of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation Of Revenue [Line Items]
Total revenue	$ 556,496	$ 305,896	$ 273,784
Transferred at Point in Time [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	527,677	286,130
Transferred over Time [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	$ 28,819	$ 19,766