Revenue, Gross Profit, Gross Profit Margin and Operating Income (Loss) by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Sep. 30, 2022	Oct. 01, 2021
Segment Reporting Information [Line Items]
Revenue	$ 222,958	$ 177,726	$ 642,530	$ 507,833
Gross Profit	$ 98,408	$ 76,298	$ 283,929	$ 217,444
Gross profit margin percentage	44.10%	42.90%	44.20%	42.80%
Operating Income (Loss)	$ 28,661	$ 15,275	$ 76,235	$ 42,366
Operating Segments | Photonics
Segment Reporting Information [Line Items]
Revenue	70,799	55,263	203,042	176,113
Gross Profit	$ 34,699	$ 25,311	$ 94,268	$ 83,014
Gross profit margin percentage	49.00%	45.80%	46.40%	47.10%
Operating Income (Loss)	$ 18,351	$ 9,294	$ 45,782	$ 35,885
Operating Segments | Vision
Segment Reporting Information [Line Items]
Revenue	73,345	65,346	200,911	196,429
Gross Profit	$ 28,201	$ 24,763	$ 79,966	$ 76,132
Gross profit margin percentage	38.40%	37.90%	39.80%	38.80%
Operating Income (Loss)	$ 8,744	$ 5,606	$ 20,811	$ 12,178
Operating Segments | Precision Motion
Segment Reporting Information [Line Items]
Revenue	78,814	57,117	238,577	135,291
Gross Profit	$ 36,832	$ 27,743	$ 113,846	$ 64,694
Gross profit margin percentage	46.70%	48.60%	47.70%	47.80%
Operating Income (Loss)	$ 15,800	$ 14,957	$ 48,222	$ 34,681
Unallocated Corporate and Shared Services
Segment Reporting Information [Line Items]
Gross Profit	(1,324)	(1,519)	(4,151)	(6,396)
Operating Income (Loss)	$ (14,234)	$ (14,582)	$ (38,580)	$ (40,378)