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Geographic and Product Data (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 04, 2014	Jun. 28, 2013	Jul. 04, 2014	Jun. 28, 2013
Geographic and Product Data [Line Items]
Net sales	$ 20,048	$ 18,164	$ 40,226	$ 36,165
Japan [Member]
Geographic and Product Data [Line Items]
Net sales	4,549	4,648	9,557	9,387
United States [Member]
Geographic and Product Data [Line Items]
Net sales	2,926	3,154	5,801	6,394
China [Member]
Geographic and Product Data [Line Items]
Net sales	2,535	2,230	4,759	4,301
Korea [Member]
Geographic and Product Data [Line Items]
Net sales	1,952	1,834	4,573	3,869
Spain [Member]
Geographic and Product Data [Line Items]
Net sales	1,474	1,163	3,092	2,454
France [Member]
Geographic and Product Data [Line Items]
Net sales	1,190	595	2,136	1,127
Germany [Member]
Geographic and Product Data [Line Items]
Net sales	1,015	611	1,912	1,126
Other [Member]
Geographic and Product Data [Line Items]
Net sales	$ 4,407	$ 3,929	$ 8,396	$ 7,507

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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