Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 24, 2022	Sep. 25, 2021	Dec. 25, 2021
Income Tax Disclosure [Abstract]
Effective income tax (benefit) rate	0.59%	6.15%
Net deferred tax liability	$ 91		$ 91
Unrecognized tax benefits	515		494
Income tax penalties and interest accrued	$ 0		$ 0