Restructuring and Acquisition Related Costs - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Restructuring and Acquisition Related Costs [Line Items]
Restructuring costs	$ 2,134	$ 988	$ 3,370	$ 988
Acquisition and related charges	2,179	1,451	2,997	1,476
Finders' Fees, Legal, Valuation And Other Professional Or Consulting Fees
Restructuring and Acquisition Related Costs [Line Items]
Acquisition and related charges	1,400	300	1,600	300
Earn-out Agreement
Restructuring and Acquisition Related Costs [Line Items]
Acquisition and related charges	800	1,100	$ 1,400	1,100
2019 Restructuring
Restructuring and Acquisition Related Costs [Line Items]
Restructuring and related cost description			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. During the three and six months ended June 28, 2019, the Company recorded $1.0 million and $2.0 million, respectively, in severance and related costs, and $0.8 million and $0.9 million, respectively, in facility related costs, in connection with the 2019 restructuring plan. As of June 28, 2019, the Company incurred cumulative costs related to this restructuring plan totaling $3.3 million. The Company anticipates completing the 2019 restructuring program in the first quarter of 2020 and expects to incur additional restructuring charges of $3.0 million to $4.5 million related to the 2019 restructuring program
Restructuring costs	1,965		$ 2,932
Restructuring cumulative costs incurred	3,300		3,300
2019 Restructuring | Vision
Restructuring and Acquisition Related Costs [Line Items]
Restructuring costs	306		656
2019 Restructuring | Severance Costs
Restructuring and Acquisition Related Costs [Line Items]
Restructuring costs	1,000		2,000
2019 Restructuring | Facility Costs
Restructuring and Acquisition Related Costs [Line Items]
Restructuring costs	800		900
2019 Restructuring | Additional Restructuring Costs | Minimum
Restructuring and Acquisition Related Costs [Line Items]
Restructuring costs	3,000		3,000
2019 Restructuring | Additional Restructuring Costs | Maximum
Restructuring and Acquisition Related Costs [Line Items]
Restructuring costs	4,500		4,500
2018 Restructuring
Restructuring and Acquisition Related Costs [Line Items]
Restructuring costs	169	$ 988	438	$ 988
Restructuring cumulative costs incurred	2,100		$ 2,100
2018 Restructuring | Vision
Restructuring and Acquisition Related Costs [Line Items]
Restructuring and related cost description			During the second quarter of 2018, the Company initiated a program to integrate manufacturing operations as a result of recent acquisition activities. During the three and six months ended June 28, 2019, the Company recorded $0.2 million and $0.4 million, respectively, in severance and related costs in connection with the 2018 restructuring plan. These costs were reported in the Vision reportable segment. As of June 28, 2019, the Company incurred cumulative costs related to this restructuring plan totaling $2.1 million. The Company anticipates completing the 2018 restructuring program during the fourth quarter of 2019 and expects to incur additional restructuring charges of $0.5 million to $0.7 million related to the 2018 restructuring program in the Vision reportable segment.
2018 Restructuring | Severance Costs | Vision
Restructuring and Acquisition Related Costs [Line Items]
Restructuring costs	200		$ 400
2018 Restructuring | Additional Restructuring Costs | Minimum | Vision
Restructuring and Acquisition Related Costs [Line Items]
Restructuring costs	500		500
2018 Restructuring | Additional Restructuring Costs | Maximum | Vision
Restructuring and Acquisition Related Costs [Line Items]
Restructuring costs	$ 700		$ 700