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

	Three Months Ended
	April 1,			April 2,
	2022			2021
2020 restructuring	$	622		$	1,338
2019 restructuring		—		$	208
Total restructuring charges		622			1,546
Acquisition and related charges		(2,252	)		2,185
Total restructuring, acquisition, and related costs	$	(1,630	)	$	3,731

As a result of the Company’s ongoing evaluations and efforts to reduce its operating costs, while improving efficiency and effectiveness, the Company initiated the 2020 restructuring program in the third quarter of 2020. This program is focused on reducing operating complexity in the Company, including reducing infrastructure costs and streamlining the Company’s operating model to better serve its customers. In addition, the program is focused on cost reduction actions that improve gross margins for the overall company. During the three months ended April 1, 2022, the Company recorded $0.6 million in severance and other costs in connection with the 2020 restructuring program. As of April 1, 2022, the Company had incurred cumulative costs related to this restructuring plan totaling $8.7 million. The Company anticipates substantially completing the 2020 restructuring program in the fourth quarter of 2022 and expects to incur additional restructuring charges of $3.5 million to $4.5 million related to the 2020 restructuring program.

The following table summarizes restructuring costs associated with the 2020 restructuring program by reportable segment (in thousands):

	Three Months Ended
	April 1,			April 2,
	2022			2021
Photonics	$	693		$	295
Vision		41			422
Precision Motion		(112	)		621
Unallocated Corporate and Shared Services		—			—
Total	$	622		$	1,338

During the fourth quarter of 2018, the Company implemented a restructuring plan intended to realign operations, reduce costs, achieve operational efficiencies and focus resources on growth initiatives (the “2019 restructuring plan”). The Company did not incur any costs related to the 2019 restructuring plan during the three months ended April 1, 2022. As of December 31, 2021, the Company incurred cumulative costs related to this restructuring plan totaling $9.0 million. The 2019 restructuring program was completed in 2021.

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			Employee Related			Facility			Other
Balance at December 31, 2021	$	2,686		$	2,107		$	550		$	29
Restructuring charges		622			138			470			14
Cash payments		(1,129	)		(672	)		(449	)		(8	)
Non-cash charges and other adjustments		(97	)		—			(96	)		(1	)
Balance at April 1, 2022	$	2,082		$	1,573		$	475		$	34

Acquisition costs in connection with business combinations, including finders’ fees, legal, valuation, and other professional or consulting fees, totaled less than $0.1 million and $0.2 million for the three months ended April 1, 2022 and April 2, 2021 respectively. The Company incurred zero and $0.9 million for the three months ended April 1, 2022 and April 2, 2021, respectively, in legal costs related to a dispute involving a company that was acquired in 2019. During the three months ended April 1, 2022, the Company recognized $2.3 million reductions in the fair values of certain prior-year acquisition contingent considerations. During the three months ended April 2, 2021, the Company recognized $1.0 million of earn-out expense related to a prior-year acquisition. The majority of acquisition and related costs for the three months ended April 1, 2022 were included in the Company’s Precision Motion and Photonics reportable segments. The majority of acquisition and related costs for the three months ended April 2, 2021 were included in the Company’s Precision Motion and Vision reportable segments.