Restructuring and Acquisition Related Costs (Tables)

9 Months Ended

Sep. 27, 2019

Restructuring And Related Activities [Abstract]

Schedule of Restructuring and Acquisition Related Costs

The following table summarizes restructuring and acquisition related costs in the accompanying consolidated statements of operations (in thousands):

	Three Months Ended				Nine Months Ended
	September 27,		September 28,		September 27,		September 28,
	2019		2018		2019		2018
2019 restructuring	$	1,115	$	—	$	4,047	$	—
2018 restructuring		351		137		789		1,125
Total restructuring charges		1,466		137		4,836		1,125
Acquisition and related charges		4,080		2,204		7,077		3,680
Total restructuring and acquisition related costs	$	5,546	$	2,341	$	11,913	$	4,805

Schedule of Restructuring Charges by Segment

The following table summarizes restructuring costs associated with the 2019 restructuring program for each reportable segment and unallocated corporate and shared services costs (in thousands):

	Three Months Ended			Nine Months Ended
	September 27,			September 27,
	2019			2019
Photonics	$	475		$	2,025
Vision		367			1,023
Precision Motion		340			534
Unallocated Corporate and Shared Services		(67	)		465
Total	$	1,115		$	4,047

Summary of Accrual Activities by Components Related to Company's Restructuring Plans

The following table summarizes the accrual activities, by component, related to the Company’s restructuring plans recorded in the accompanying consolidated balance sheets (in thousands):

	Total			Severance			Facility			Other
Balance at December 31, 2018	$	1,276		$	876		$	388		$	12
Restructuring charges		4,836			3,437			975			424
Cash payments		(2,717	)		(2,381	)		58			(394	)
Reclassification of reserves (a)		(601	)		—			(601	)		—
Non-cash write-offs and other adjustments		(964	)		(144	)		(820	)		—
Balance at September 27, 2019	$	1,830		$	1,788		$	—		$	42

(a) Accrual related to exited facilities was reclassified to operating lease liabilities upon adoption of ASU 2016-02.