Deferred Compensation and Other Benefits - Schedule of Net Periodic Pension Cost (Details) - Deferred Compensation and Other Benefits [Member] - Executive Officer [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 27, 2020	Mar. 29, 2019
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 103	$ 84
Interest cost	87	147
Expected return on assets	(159)	(155)
Amortization of actuarial loss	74	48
Net periodic pension cost	$ 105	$ 124