Warranty (Tables)

9 Months Ended

Sep. 30, 2017

Activity in Warranty Provision Account

The following table displays the activity in the warranty provision account for the three and nine months ended September 30, 2017 and October 1, 2016:

	Three Months Ended						Nine Months Ended
	September 30, 2017			October 1, 2016			September 30, 2017			October 1, 2016
	(In thousands)
Opening balance	$	1,220		$	592		$	1,007		$	982
Expenditures incurred under warranties		(360	)		(80	)		(640	)		(384	)
Accruals for product warranties issued during the reporting period		169			320			675			494
Adjustments to previously existing warranty accruals		106			(110	)		93			(370	)
Closing balance	$	1,135		$	722		$	1,135		$	722

The following table displays the balance sheet classification of the warranty provision account at September 30, 2017 and at December 31, 2016:

	September 30, 2017		December 31, 2016
	(In thousands)
Other accrued liabilities	$	915	$	829
Other long-term liabilities		220		178
Total warranty provision	$	1,135	$	1,007