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Post-Retirement Health Care (Schedule of Cost of Retirement Plans) (Details) - Postretirement Health Coverage - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 29, 2018 | Dec. 30, 2017
Change in benefit obligation |  |
Benefit obligation at beginning of year | $ 22,933 | $ 21,153
Service cost | 853 | 741
Interest cost | 789 | 825
Benefits paid | (1,570) | (1,003)
Actuarial (gain) loss | (3,453) | 1,217
Benefit obligation at end of year | 19,552 | 22,933
Change in plan assets |  |
Fair value at beginning of year | 0 | 0
Actual return on assets | 0 | 0
Employer contribution | 1,570 | 1,003
Transferred out | 0 | 0
Benefits paid | (1,570) | (1,003)
Fair value at end of year | 0 | 0
Funded Status of Plan | (19,552) | (22,933)
Amounts recognized in the Statement of Financial Position consist of: |  |
Current liabilities | 1,057 | 1,050
Non-current liabilities | 18,495 | 21,883
Amounts recognized in Accumulated Other Comprehensive Income (before tax) consist of: |  |
Actuarial (gain) loss | (14) | 3,565
Change in Accumulated Other Comprehensive Income (before tax): |  |
Amount disclosed at beginning of year | 3,565 | 2,373
Actuarial (gain) loss | (3,453) | 1,217
Amortization of transition amount | (126) | (25)
Amount disclosed at end of year | $ (14) | $ 3,565

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