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Segment and Geographic Information (Significant Customers) (Details) - customer | 12 Months Ended
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Dec. 28, 2018 | Dec. 29, 2017 | Dec. 30, 2016
Revenue, Major Customer [Line Items] |  |  |
Number of Customers | 4 |  |
Entity-Wide Revenue, Major Customer, Percentage | 52.00% | 53.00% | 57.00%
Entity Wide Accounts Receivable, Major Customer, Percentage | 49.00% | 52.00% |
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Number of Customers | 4 | 4 | 4
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | Customer A [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Entity-Wide Revenue, Major Customer, Percentage | 21.00% | 22.00% | 24.00%
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | Customer B [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Entity-Wide Revenue, Major Customer, Percentage | 19.00% | 20.00% | 21.00%
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | Customer C [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Entity-Wide Revenue, Major Customer, Percentage | 12.00% | 11.00% | 12.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Number of Customers | 4 | 4 |
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer A [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Entity Wide Accounts Receivable, Major Customer, Percentage | 11.00% | 11.00% |
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer B [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Entity Wide Accounts Receivable, Major Customer, Percentage | 18.00% | 21.00% |
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer C [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Entity Wide Accounts Receivable, Major Customer, Percentage | 20.00% | 20.00% |
Medical Segment [Member] | Customer Concentration Risk [Member] | Revenue from Contract with Customer [Member] | Customer A [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Entity-Wide Revenue, Major Customer, Percentage | 22.00% |  |
Medical Segment [Member] | Customer Concentration Risk [Member] | Revenue from Contract with Customer [Member] | Customer B [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Entity-Wide Revenue, Major Customer, Percentage | 19.00% |  |
Medical Segment [Member] | Customer Concentration Risk [Member] | Revenue from Contract with Customer [Member] | Customer C [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Entity-Wide Revenue, Major Customer, Percentage | 12.00% |  |
Medical Segment [Member] | Customer Concentration Risk [Member] | Revenue from Contract with Customer [Member] | Customer D [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Entity-Wide Revenue, Major Customer, Percentage | 0.00% |  |
Medical Segment [Member] | Customer Concentration Risk [Member] | Revenue from Contract with Customer [Member] | All Other Customers [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Entity-Wide Revenue, Major Customer, Percentage | 47.00% |  |
Non-Medical Segment [Member] | Customer Concentration Risk [Member] | Revenue from Contract with Customer [Member] | Customer A [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Entity-Wide Revenue, Major Customer, Percentage | 0.00% |  |
Non-Medical Segment [Member] | Customer Concentration Risk [Member] | Revenue from Contract with Customer [Member] | Customer B [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Entity-Wide Revenue, Major Customer, Percentage | 0.00% |  |
Non-Medical Segment [Member] | Customer Concentration Risk [Member] | Revenue from Contract with Customer [Member] | Customer C [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Entity-Wide Revenue, Major Customer, Percentage | 0.00% |  |
Non-Medical Segment [Member] | Customer Concentration Risk [Member] | Revenue from Contract with Customer [Member] | Customer D [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Entity-Wide Revenue, Major Customer, Percentage | 28.00% |  |
Non-Medical Segment [Member] | Customer Concentration Risk [Member] | Revenue from Contract with Customer [Member] | All Other Customers [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Entity-Wide Revenue, Major Customer, Percentage | 72.00% |  |

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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13531-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13537-108611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 + Details
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