Guarantees (Tables)

12 Months Ended

Dec. 31, 2017

Guarantees

Product warranty accrued liability

The following table reflects the change in our warranty accrual which is included in “Accrued liabilities” on the consolidated balance sheets, during 2017 and 2016 (in thousands):

	Year Ended
	December 31,
	2017		2016
Beginning accrued warranty and related costs	$	251	$	497
Accruals for warranties issued		125		92
Adjustments related to pre-existing warranties including expirations and changes in estimates		(150)		(223)
Cost of warranty repair		(93)		(115)
Ending accrued warranty and related costs	$	133	$	251