Current Liabilities (Tables)

3 Months Ended

Apr. 01, 2017

Accounts Payable and Accrued Liabilities, Current [Abstract]

Deferred Revenue, by Arrangement, Disclosure

Changes in our deferred service revenue were as follows:

	Three Months Ended
(In thousands)	April 1, 2017			April 2, 2016
Balance, beginning of the period	$	3,842		$	4,011
Additions	1,073			1,179
Revenue recognized	(850		)	(1,016		)
Balance, end of the period	$	4,065		$	4,174
Balance sheets classification
Deferred service income-short term	$	3,170		$	4,174
Deferred service income-long term	895			—
Balance, end of the period	$	4,065		$	4,174

Schedule of Accrued Liabilities

Other current liabilities consisted of the following:

(In thousands)	April 1, 2017		December 31, 2016
Salaries and benefits	$	9,319	$	11,494
Warranty accrual	2,126		1,884
Advanced billings	535		583
Capital lease, current portion	289		504
Other	1,538		3,563
Balance, end of the period	$	13,807	$	18,028

Schedule of Product Warranty Liability

Changes in our warranty accrual were as follows:

	Three Months Ended
(In thousands)	April 1, 2017			April 2, 2016
Balance, beginning of the period	$	1,884		$	1,586
Liabilities accrued for warranties issued	813			653
Warranty claims paid and utilized	(558		)	(548		)
Changes in accrued warranty liabilities	(13		)	(21		)
Balance, end of the period	$	2,126		$	1,670