Income Taxes - Income Tax Provision Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 29, 2024	Oct. 01, 2023	Sep. 29, 2024	Oct. 01, 2023
Income Tax Disclosure [Abstract]
Income tax expense at federal statutory rate	$ 1.2	$ 1.4	$ 4.7	$ 0.7
Nondeductible expenses and other	1.7	2.8	6.8	6.1
Stock compensation - excess tax shortfalls (windfalls)	(0.1)	(0.2)	(0.7)	0.5
Federal impact of research & development tax credits	(0.2)	(0.2)	(0.7)	(0.6)
Provision for income taxes	$ 2.6	$ 3.8	$ 10.1	$ 6.7