Warranty (Tables)

3 Months Ended

Mar. 30, 2019

Guarantees [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

The following table displays the activity in the warranty provision account for the three-month periods ended March 30, 2019 and March 31, 2018.

	Three Months Ended
	March 30, 2019			March 31, 2018
	(In thousands)
Opening balance	$	997		$	994
Expenditures incurred under warranties		(167	)		(236	)
Accruals for product warranties issued during the reporting period		324			104
Adjustments to previously existing warranty accruals		143			4
Closing balance	$	1,297		$	866

The following table displays the balance sheet classification of the warranty provision account at March 30, 2019 and at December 29, 2018.

	March 30, 2019		December 29, 2018
	(In thousands)
Other accrued liabilities	$	1,147	$	839
Other long-term liabilities		150		158
Total warranty provision	$	1,297	$	997