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Note 14 - Segment Information (Details) - Revenues by Geographic Area (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013		Sep. 27, 2014	Sep. 28, 2013
Revenues
Revenues	$ 46,382	$ 41,320	[1]	$ 144,460	$ 124,929	[1]
United States [Member]
Revenues
Revenues	32,651	30,991		103,403	96,558
Canada [Member]
Revenues
Revenues	12,087	8,980		36,669	24,429
Puerto Rico [Member]
Revenues
Revenues	$ 1,644	$ 1,349		$ 4,388	$ 3,942
[1] Certain prior year amounts have been reclassified to conform to fiscal 2014 presentation. These changes had no impact on previously reported results of operations or shareholder's equity.

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ 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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X

- Details

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Period Type:	duration