Employee Benefit Plans (Other Postretirement Plans - Funded Status) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	$ 325	$ 314
Service cost	8	7	$ 7
Interest cost	17	16	15
Actuarial (gain) loss	(18)	(11)
Benefits Paid	1	1
Benefit obligation at end of year	331	325	314
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	0	0
Employer contributions	1	1
Benefits Paid	1	1
Fair value of plan assets at end of year	0	0	0
Unfunded amount	(331)	(325)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Accrued expenses	15	14
Other long-term liabilities	316	311
Total liability	331	$ 325
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months	15
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	14
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	14
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	14
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	14
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter	$ 73
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate (benefit obligation)	4.00%	4.00%
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 8	$ 7	7
Interest cost	17	16	15
Amortization of prior service credits	(4)	(4)	(4)
Recognized net actuarial gains	(28)	(30)	(33)
Net periodic benefit cost (credit)	(7)	$ (11)	$ (15)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Prior service credits	(3)
Unrecognized actuarial gains	(372)
Totals	(375)
Defined Benefit Plan, Expected Amortization, Next Fiscal Year [Abstract]
Prior service credits	(4)
Unrecognized actuarial gains	(27)
Totals	$ (31)