Revenue

9 Months Ended

Sep. 26, 2020

Revenue From Contract With Customer [Abstract]

Revenue

NOTE 10. Revenue

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

	Three Months Ended				Nine Months Ended
	September 26,		September 30,		September 26,		September 30,
	2020		2019		2020		2019
Point-in-time	$	122,015	$	58,663	$	387,556	$	172,562
Over-time		4,477		4,272		13,812		12,776
Total revenue	$	126,492	$	62,935	$	401,368	$	185,338

See Note 16 for additional discussion of the Company’s disaggregated revenue in detail.

Contract Liabilities

The Company records contract liabilities when the customer has been billed in advance of the Company completing its performance obligations. These amounts are recorded as deferred revenue in the Condensed Consolidated Balance Sheets.  

Changes in deferred revenue were as follows:

	Three Months Ended						Nine Months Ended
	September 26,			September 30,			September 26,			September 30,
	2020			2019			2020			2019
Balance, beginning of the period	$	17,894		$	9,349		$	15,093		$	8,080
Deferral of revenue		10,137			5,860			33,389			17,492
Recognition of deferred revenue		(10,396	)		(7,937	)		(30,847	)		(18,300	)
Balance, end of the period	$	17,635		$	7,272		$	17,635		$	7,272