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Geographic and Product Data (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 03, 2014		Dec. 28, 2012		Dec. 30, 2011
Geographic and Product Data [Line Items]
Net sales	$ 72,215		$ 63,783		$ 62,765
United States [Member]
Geographic and Product Data [Line Items]
Net sales	12,851		12,427		13,852
Japan [Member]
Geographic and Product Data [Line Items]
Net sales	17,666		16,692		15,690
Korea [Member]
Geographic and Product Data [Line Items]
Net sales	7,743		6,713		8,142
China [Member]
Geographic and Product Data [Line Items]
Net sales	8,618		8,406		6,354
Spain [Member]
Geographic and Product Data [Line Items]
Net sales	4,867		0		0
Others [Member]
Geographic and Product Data [Line Items]
Net sales	$ 20,470	[1]	$ 19,545	[1]	$ 18,727	[1]
[1] No other location individually exceeds 5% of total sales.

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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

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