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. 29, 2019	Mar. 30, 2018
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 84	$ 80
Interest cost	147	148
Expected return on assets	(155)	(164)
Amortization of actuarial loss	48	73
Net periodic pension cost	$ 124	$ 137