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Geographic and Product Data (Details 2) - USD ($) $ in Thousands	Dec. 29, 2017	Dec. 30, 2016
Geographic and Product Data [Line Items]
Property, Plant and Equipment, Net	$ 9,776	$ 11,790
Property, Plant and Equipment [Member]
Geographic and Product Data [Line Items]
Property, Plant and Equipment, Net	10,047	12,263
Property, Plant and Equipment [Member] | United States [Member]
Geographic and Product Data [Line Items]
Property, Plant and Equipment, Net	8,523	10,704
Property, Plant and Equipment [Member] | Switzerland [Member]
Geographic and Product Data [Line Items]
Property, Plant and Equipment, Net	912	737
Property, Plant and Equipment [Member] | Japan [Member]
Geographic and Product Data [Line Items]
Property, Plant and Equipment, Net	$ 612	$ 822

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- Definition

Line items represents the geographic and product data.

+ References

No definition available.

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- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(14))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(8))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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