Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2020	Oct. 01, 2019	Sep. 29, 2020	Oct. 01, 2019
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 27	$ 64	$ 73	$ 64
Effective tax rate	(27.00%)	1.50%	(0.40%)	2.20%