Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 28, 2019

Accounting Policies [Abstract]

Reconciliation of Changes in Deferred Revenue

A reconciliation of the changes in the Company’s deferred revenue balance for the nine months ended September 28, 2019 and September 29, 2018 is as follows:

	Nine Months Ended
	September 28, 2019			September 29, 2018
Balance, beginning of period	$	2,225		$	2,520
Additions to deferral		1,575			1,426
Revenue recognized		(1,906	)		(1,729	)
Balance, end of period		1,894			2,217
Non-current portion of deferred revenue		366			608
Current portion of deferred revenue	$	1,528		$	1,609

Reconciliation of Changes in Warranty Liability

A reconciliation of the changes in the Company’s warranty liability for the nine months ended September 28, 2019 and September 29, 2018 is as follows:

	Nine Months Ended
	September 28, 2019			September 29, 2018
Balance, beginning of period	$	860		$	1,735
Accruals for product warranties		219			298
Cost of warranty claims		(232	)		(756	)
Adjustment to pre-existing warranties		(334	)		(445	)
Balance, end of period	$	513		$	832