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Revenue From Contracts With Customers (Disaggregated Revenue) (Details)	12 Months Ended
	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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- Definition

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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No definition available.

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