Postretirement Health Care (Schedule of Cost of Retirement Plans) (Details) - Other Postretirement Benefit Plan [Member] - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015
Change in benefit obligation
Benefit obligation at beginning of year	$ 21,972	$ 16,448
Service cost	803	504
Interest cost	816	735
Benefits paid	(1,009)	(1,280)
Actuarial (gain)/loss	(1,698)	5,565
Benefit obligation at end of year	20,884	21,972
Change in plan assets
Fair value at beginning of year	0	0
Actual return on assets	0	0
Employer contribution	1,009	1,280
Transferred out	0	0
Fair value at end of year	0	0
Funded Status of Plan	(20,884)	(21,972)
Amounts recognized in the Statement of Financial Position consist of:
Current liabilities	1,014	1,004
Noncurrent liabilities	19,870	20,968
Amounts recognized in Accumulated Other Comprehensive Income (before tax) consist of:
Actuarial (gain)/loss	2,730	4,665
Transition (asset)/obligation	0	0
Prior service cost	0	0
Change in Accumulated Other Comprehensive Income (before tax):
Change in accumulated other comprehensive income (before tax), beginning of period	4,665	(900)
Actuarial (gain)/loss	$ (1,698)	5,565
Amortization of actuarial gain or loss		0
Amortization of transition amount	$ (237)	0
Amortization of prior service cost		0
Change in accumulated other comprehensive income (before tax), end of period	$ 2,730	$ 4,665