Restructuring Charges - Changes in Restructuring Reserves (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 318	$ 1,023
Provision for restructuring charges under the Cost Reduction Plan	1,950	1,232
Cash payments made	(1,948)	(1,269)
Provision for restructuring charges associated with Photonics sale	7	127
Cash payments made	(325)	(757)
Non-cash utilization	(2)	(37)
Non-cash utilization		(75)
Ending balance	0	318
Severance And Other Employee Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	0	358
Provision for restructuring charges under the Cost Reduction Plan	1,950	1,232
Cash payments made	(1,948)	(1,269)
Provision for restructuring charges associated with Photonics sale	0	112
Cash payments made	0	(395)
Non-cash utilization	(2)	(37)
Non-cash utilization		(75)
Ending balance	0	0
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	318	665
Provision for restructuring charges under the Cost Reduction Plan	0	0
Cash payments made	0	0
Provision for restructuring charges associated with Photonics sale	7	15
Cash payments made	(325)	(362)
Non-cash utilization	0	0
Non-cash utilization		0
Ending balance	$ 0	$ 318