Revenue (Tables)

6 Months Ended

Jun. 27, 2020

Revenue From Contract With Customer [Abstract]

Schedule of Disaggregation of Revenue

The following table represents a disaggregation of revenue by timing of revenue:

	Three Months Ended				Six Months Ended
	June 27,		June 30,		June 27,		June 30,
	2020		2019		2020		2019
Point-in-time	$	131,796	$	57,308	$	265,541	$	113,899
Over-time		3,152		4,203		9,335		8,504
Total revenue	$	134,948	$	61,511	$	274,876	$	122,403

Schedule of Changes in Deferred Revenue

Changes in deferred revenue were as follows:

	Three Months Ended						Six Months Ended
	June 27,			June 30,			June 27,			June 30,
	2020			2019			2020			2019
Balance, beginning of the period	$	18,032		$	8,687		$	15,093		$	8,080
Deferral of revenue		8,818			6,130			23,252			11,631
Recognition of deferred revenue		(8,956	)		(5,468	)		(20,451	)		(10,362	)
Balance, end of the period	$	17,894		$	9,349		$	17,894		$	9,349