Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2021	Sep. 26, 2020	Oct. 02, 2021	Sep. 26, 2020	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 1,205	$ 762	$ 4,126	$ 3,426
Unrecognized tax benefits	4,500		4,500		$ 4,100
Expected change in unrecognized tax benefits	$ 2,800		$ 2,800