Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Reconciliation of Changes in Deferred Revenue

A reconciliation of the changes in the Company’s deferred revenue balance for the three months ended March 31, 2018 and April 1, 2017 is as follows:

	Three Months Ended
	March 31, 2018			April 1, 2017
Balance, beginning of period	$	2,520		$	1,383
Additions to deferral		372			280
Revenue recognized		(647	)		(302	)
Balance, end of period	$	2,245		$	1,361

Reconciliation of Changes in Warranty Liability

A reconciliation of the changes in the Company’s warranty liability for the three months ended March 31, 2018 and April 1, 2017 is as follows:

	Three Months Ended
	March 31, 2018			April 1, 2017
Balance, beginning of period	$	1,734		$	603
Accruals for product warranties		(374	)		109
Cost of warranty claims		(245	)		(63	)
Balance, end of period	$	1,115		$	649