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Revenue From Contracts With Customers (Disaggregated Revenue) (Details) | 12 Months Ended
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Dec. 28, 2018 | Dec. 29, 2017 | Dec. 30, 2016
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk percentage | 52.00% | 53.00% | 57.00%
Medical Segment [Member] | Revenue from Contract with Customer [Member] | Customer Concentration Risk [Member] | Customer A [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk percentage | 22.00% |  |
Medical Segment [Member] | Revenue from Contract with Customer [Member] | Customer Concentration Risk [Member] | Customer B [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk percentage | 19.00% |  |
Medical Segment [Member] | Revenue from Contract with Customer [Member] | Customer Concentration Risk [Member] | Customer C [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk percentage | 12.00% |  |
Medical Segment [Member] | Revenue from Contract with Customer [Member] | Customer Concentration Risk [Member] | Customer D [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk percentage | 0.00% |  |
Medical Segment [Member] | Revenue from Contract with Customer [Member] | Customer Concentration Risk [Member] | All Other Customers [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk percentage | 47.00% |  |
Medical Segment [Member] | Revenue from Contract with Customer [Member] | Geographic Concentration Risk [Member] | United States [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk percentage | 56.00% |  |
Medical Segment [Member] | Revenue from Contract with Customer [Member] | Geographic Concentration Risk [Member] | Puerto Rico [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk percentage | 13.00% |  |
Medical Segment [Member] | Revenue from Contract with Customer [Member] | Geographic Concentration Risk [Member] | Canada [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk percentage | 0.00% |  |
Medical Segment [Member] | Revenue from Contract with Customer [Member] | Geographic Concentration Risk [Member] | All Other Countries [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk percentage | 31.00% |  |
Non-Medical Segment [Member] | Revenue from Contract with Customer [Member] | Customer Concentration Risk [Member] | Customer A [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk percentage | 0.00% |  |
Non-Medical Segment [Member] | Revenue from Contract with Customer [Member] | Customer Concentration Risk [Member] | Customer B [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk percentage | 0.00% |  |
Non-Medical Segment [Member] | Revenue from Contract with Customer [Member] | Customer Concentration Risk [Member] | Customer C [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk percentage | 0.00% |  |
Non-Medical Segment [Member] | Revenue from Contract with Customer [Member] | Customer Concentration Risk [Member] | Customer D [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk percentage | 28.00% |  |
Non-Medical Segment [Member] | Revenue from Contract with Customer [Member] | Customer Concentration Risk [Member] | All Other Customers [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk percentage | 72.00% |  |
Non-Medical Segment [Member] | Revenue from Contract with Customer [Member] | Geographic Concentration Risk [Member] | United States [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk percentage | 66.00% |  |
Non-Medical Segment [Member] | Revenue from Contract with Customer [Member] | Geographic Concentration Risk [Member] | Puerto Rico [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk percentage | 0.00% |  |
Non-Medical Segment [Member] | Revenue from Contract with Customer [Member] | Geographic Concentration Risk [Member] | Canada [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk percentage | 11.00% |  |
Non-Medical Segment [Member] | Revenue from Contract with Customer [Member] | Geographic Concentration Risk [Member] | All Other Countries [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk percentage | 23.00% |  |

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