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Note 6 - Acquisitions (Details) - Maximum Deferred Consideration Payments (USD $) In Thousands, unless otherwise specified | Dec. 28, 2013 | Dec. 29, 2012
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Business Acquisition, Contingent Consideration [Line Items] |  |
Estimated contingent consideration payments | $ 930 | $ 1,022
December 28, 2013 [Member] | BGA [Member] |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Estimated contingent consideration payments | 313 |
January 3, 2015 [Member] | BGA [Member] |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Estimated contingent consideration payments | 210 |
January 2, 2016 [Member] | BGA [Member] |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Estimated contingent consideration payments | 222 |
December 31, 2016 [Member] | BGA [Member] |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Estimated contingent consideration payments | 263 |
Estimated Future Payments [Member] | BGA [Member] |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Estimated contingent consideration payments | $ 1,008 |

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- Definition Amount of liability recognized arising from contingent consideration in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph b -URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 + Details
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